JP2006065358A - Optical module, package and optical fiber connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure with which an optical fiber is attachable/detachable vertically to a package and with which a stable optical coupling efficiency can be obtained. <P>SOLUTION: The package 1 is mounted with a surface-emitting element array 2 that emits light upward and a surface-receiving element array 3 that receives light from above, and is also mounted with an LSI chip. With a planar microlens array 4 fixed on the upper face of the package 1, there is positioned by a guide pin 12 and installed an optical fiber connector 5 which is formed with a mirror 9 having a 45° angle relative to a fiber optical axis on the extension of the optical axis of the array optical fiber 7. The optical fiber connector 5 is fixed by means of a clamp 14 made of an elastic material. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an optical module, and relates to a connection structure between a package and an optical fiber in an LSI package having an optical input / output mechanism.

  In order to increase the bit rate of information devices such as computers, in-board optical connection in which LSIs such as a CPU and a memory are connected to each other by an optical fiber or an optical waveguide is promising. In-board optical connection uses an LSI having an optical signal input / output mechanism, and the input / output signals of the opticalized LSI are propagated through an optical fiber array or an optical waveguide.

  Many methods for realizing this have been proposed. Among them, as one of structures in which an optical input / output mechanism is provided in an LSI, electro-optic conversion is performed using a vertical cavity surface-emitting laser (hereinafter referred to as a vertical cavity surface-emitting laser). A surface light-emitting element typified by a VCSEL), and a photoelectric conversion is performed by a surface light-receiving element typified by a PIN photodiode, and these optical elements are mounted so that the surface thereof is parallel to the substrate. One of the promising candidates is a structure in which the optical path of the element is bent 90 degrees by a mirror and coupled to an optical fiber via a lens. The overhead space on the board can be kept low by bending the optical path by 90 degrees.

  Also, when LSI packages with optical input / output mechanisms are optically connected with a fiber array, the fiber length processing is performed when LSI is mounted on the board in a structure where a pigtail fiber is attached like a normal optical module. Since there is a complicated problem, it is desirable that the LSI package with an optical input / output mechanism and the optical fiber be detachable. In addition, it is desirable to achieve optimum optical coupling only by mechanical positioning of the guide pin and the like without performing precise optical axis adjustment work when attaching or detaching the optical fiber. The amount of deviation is required to be as large as possible.

  Furthermore, when an optical fiber is attached to or detached from an LSI package with an optical input / output mechanism, a structure for attaching and detaching in the horizontal direction with respect to the substrate requires a space for attaching and detaching the fiber around the package. Has a problem that other parts cannot be mounted and the mounting density cannot be increased. Therefore, it is preferable that the optical fiber be attached and detached in the vertical direction with respect to the substrate.

  Conventionally, as a structure in which the optical path between the surface light emitting element or the surface light receiving element and the optical fiber is converted by 90 degrees by a mirror and coupled through a lens, a flat microlens is bonded to a 45 degree oblique cut fiber disclosed in Patent Document 1. A lens is attached to the upper lid of the package containing the surface light emitting element and the surface light receiving element disclosed in Patent Document 2, and a 45-degree mirror is provided on the lens and coupled to the optical fiber arranged in the lateral direction. The structure is known.

  FIG. 5 is a perspective view showing the structure of a conventional optical module disclosed in Patent Document 1. In FIG. In this optical module, the tip of the optical fiber array 111 is polished to be inclined by 45 degrees with respect to one surface including the optical axis of each optical fiber 110 to form the reflecting surface 112, and then the tip side of the reflecting surface 112 is removed. The planar portion 113 is formed by removing and polishing the clad portion. Then, the lens array 115 is bonded to the flat portion 113, and the light receiving element array 114 is disposed in close contact with the emission side. The light propagating through the core portion of each optical fiber 110 is emitted from the flat portion 113 when reflected by the reflecting surface 112, and condensed and incident on the light receiving element array 114 via the lens array 115.

  When the optical fiber 110 is configured to be detachable in the direction perpendicular to the substrate based on the structure of the optical module as shown in FIG. 5, a member composed of the optical fiber 110 and the lens array 115 and the light receiving element array 114 are accommodated. The optical module is divided into packages to be mounted, these are positioned with guide pins or the like, and the optical fiber 110 is detached from the package. In this structure, from the viewpoint of the optical system, when this structure is first applied to the light receiving module as shown in FIG. 6, the light from the optical fiber 110 is collected by the lens array 115 and the fiber core diameter is increased. Becomes a smaller spot and is condensed on the light receiving surface of the light receiving element array 114.

  FIG. 7 is a cross-sectional view showing the structure of a conventional optical module disclosed in Patent Document 2. In FIG. This optical module includes a silicon substrate 31 on which a semiconductor laser (hereinafter referred to as LD) 32 and a PIN photodiode (hereinafter referred to as PD) 33 are fixed, a package 35 in which the silicon substrate 31 is fixed, and a package 35 A lens fixing member 59 made of ceramic, to which the lens 57 and the lens 58 are bonded and fixed, arranged so as to close the upper surface, a fiber embedded substrate 54 in which a fiber is embedded by forming a groove, and a cutting groove in the substrate 54 A half mirror 38 provided with a fixing 55, a reflecting mirror 39 adhered to the end face of the substrate 54, a precision capillary 43 holding the optical fiber 44 adhered to the opposite end face of the substrate 54, and a fiber embedded substrate 54 And a fiber position fixing member 60 for fixing the lens on the lens fixing member 59.

JP-A-4-308804 JP-A-10-115732

  In the optical module disclosed in Patent Document 1, the diameter of the light receiving surface of the light receiving element array 114 is as small as possible for a high speed response, and may be 30 μm or less. In this case, the allowable axis deviation is required to be about 5 μm or less. Moreover, since the focused beam system changes depending on the distance between the lens array 115 and the light receiving element array 114, the optical fiber 110 can be attached and detached so that the distance between the lens and the light receiving element is not precisely fixed. The problem is that the efficiency becomes unstable. In the case of the light emitting module, basically the same problem occurs only in the direction of the light beam.

  Further, in the optical module disclosed in Patent Document 2, the optical fiber 44 itself is not flat on the fiber end side, and a filter or a mirror is attached, so that the optical fiber 44 is uneven, and the surface of the package 35 is In order to attach the optical fiber 44 to the lens 57, it is necessary to fill the unevenness of the optical fiber 44. For this reason, usually, a structure in which the optical fiber 44 is bonded to the lens 57 using a transparent adhesive or the like is essential. Moreover, it becomes a system which joins and fixes, adjusting the position of the optical fiber 44. As a result, there has been a problem that it is difficult to form a structure in which the optical fiber 44 can be detached from the package 35.

  The object of the present invention is to solve the above-described problems, and an optical fiber can be attached and detached in a direction perpendicular to the substrate surface, and the optical coupling between the package and the optical fiber is not required without requiring special optical axis adjustment. It is an object of the present invention to provide an optical module, a package, and an optical fiber connector that can be connected with loss and can suppress loss fluctuation due to repeated attachment and detachment of the optical fiber.

The optical module according to the present invention is fixed to the package so as to be positioned on the optical path of the package on which at least one of the light emitting element and the light receiving element is mounted and the light emitted from the light emitting element and / or the incident light to the light receiving element And an optical path changing unit that changes the direction of the optical path so that the light emitting element and / or the light receiving element and the optical fiber are optically coupled via the micro lens. The package and the optical fiber connector are mechanically coupled so that the optical fiber connector, the light emitting element and / or the light receiving element, and the optical fiber are optically coupled via the micro lens and the optical path changing unit. Positioning means for positioning; and fixing means for detachably fixing the optical fiber connector to the package; Those having.
In one configuration example of the optical module of the present invention, the microlens is a flat microlens.
Moreover, in one structural example of the optical module of the present invention, the fixing means is made of an elastic material.

The optical module of the present invention includes a package on which at least one of a light emitting element and a light receiving element is mounted and an optical fiber, and the light emitting element and / or the light receiving element and the optical fiber are optically coupled. An optical fiber connector having an optical path changing unit that changes the direction of the optical path, and the package and the light emitting element and / or the light receiving element and the optical fiber are optically coupled via the optical path changing unit. Positioning means for mechanically positioning the optical fiber connector and fixing means made of an elastic material for detachably fixing the optical fiber connector to the package.
The optical module of the present invention includes a package on which at least one of a light emitting element and a light receiving element is mounted and an optical fiber, and the light emitting element and / or the light receiving element and the optical fiber are optically coupled. An optical fiber connector having an optical path changing unit that changes the direction of the optical path, and the package and the light emitting element and / or the light receiving element and the optical fiber are optically coupled via the optical path changing unit. Positioning means for mechanically positioning the optical fiber connector, and the optical fiber connector can be detachably fixed to the package by a fixing means made of an elastic material, and is gripped by the fixing means. It has a means to be.

Further, in one configuration example of the optical module of the present invention, the positioning means is provided on each contact surface of the package and the optical fiber connector corresponding to the guide pin, and the optical fiber connector corresponds to the guide pin. It consists of a guide hole that fits into the guide pin when mounted on the package.
Further, in one configuration example of the optical module of the present invention, the positioning means is provided on each contact surface of the package and the optical fiber connector corresponding to the positioning ball and the positioning ball, The fiber connector includes a positioning recess that fits with the positioning ball when the fiber connector is attached to the package.
Further, in one configuration example of the optical module of the present invention, the positioning means corresponds to a positioning projection provided on one of the contact surface of the package and the optical fiber connector, and the positioning projection. A positioning recess is provided on the other one of the contact surfaces and fits with the positioning projection when the optical fiber connector is attached to the package.
In one configuration example of the optical module of the present invention, the optical fiber connector is formed by a resin transfer mold.
Moreover, in one structural example of the optical module of this invention, the said optical fiber is mounted in multiple array form.
In one configuration example of the optical module of the present invention, the optical fiber connector is inserted and removed in a direction substantially perpendicular to the package surface.

Further, the present invention is a package in which an optical fiber connector can be attached and detached, and at least one of a light emitting element and a light receiving element is mounted, and light emitted from the light emitting element and / or incident light to the light receiving element is mounted. The optical fiber so that the microlens fixed so as to be positioned on the road, the light emitted from the light emitting element or the incident light to the light receiving element, and the optical fiber connector are optically coupled via the microlens. Positioning means for mechanically positioning the connector and the package is provided.
In one configuration example of the package of the present invention, the microlens is a flat microlens.
Further, one configuration example of the package of the present invention further includes fixing means for detachably fixing the optical fiber connector to the package.
Moreover, in one structural example of the package of this invention, the said fixing means consists of elastic materials.
The package of the present invention includes at least one of a light emitting element and a light receiving element, and the light emitted from the light emitting element or incident light to the light receiving element is optically coupled to the optical fiber connector. A positioning means for mechanically positioning the optical fiber connector and the package; and a means for detachably fixing the optical fiber connector by a fixing means made of an elastic material, and means for gripping by the fixing means Is.
The package of the present invention includes at least one of a light emitting element and a light receiving element, and the light emitted from the light emitting element or incident light to the light receiving element is optically coupled to the optical fiber connector. Positioning means for mechanically positioning the optical fiber connector and the package, and fixing means made of an elastic material for allowing the optical fiber to be detachably fixed.

Moreover, in one structural example of the package of this invention, the said positioning means is provided in the position corresponding to the guide hole provided in the said optical fiber connector, and consists of a guide hole fitted to a guide pin.
Further, in one configuration example of the package of the present invention, the positioning means includes a positioning recess that is provided at a position corresponding to the positioning recess provided in the optical fiber connector and is fitted to the positioning ball. is there.
Also, in one configuration example of the package of the present invention, the positioning means is provided at a position corresponding to a positioning recess provided in the optical fiber connector, and the optical fiber connector is mounted when the optical fiber connector is attached to the package. It consists of positioning protrusions that fit into the positioning recesses.
Further, in one structural example of the package of the present invention, the positioning means is provided at a position corresponding to a positioning protrusion provided on the optical fiber connector, and the optical fiber connector is mounted on the package when the optical fiber connector is mounted on the package. It consists of a positioning recess that fits into the positioning projection.
Further, in one configuration example of the package of the present invention, the light emitting element or the light receiving element is mounted in a plurality of arrays.

Further, the present invention provides a package in which at least one of a light emitting element and a light receiving element is mounted, and a microlens is fixed so as to be positioned on an optical path of light emitted from the light emitting element and / or incident light to the light receiving element. On the other hand, a detachable optical fiber connector, an optical path changing unit that changes an optical path direction so that an optical fiber, a light input / output unit of the package, and the optical fiber are optically coupled, and the package Positioning means for mechanically positioning the package so that the optical fiber and the optical fiber are optically coupled via the optical path changing unit.
Further, the present invention is an optical fiber connector that is detachable from a package on which at least one of a light emitting element and a light receiving element is mounted, and the optical fiber, the light input / output part of the package, and the optical fiber An optical path changing unit that changes the direction of an optical path so as to be optically coupled, and positioning means that mechanically positions the package so that the package and the optical fiber are optically coupled via the optical path changing unit. The optical fiber connector and the package can be fixed by a detachable fixing means, and the fixing means is made of an elastic material.
Moreover, one structural example of the optical fiber connector of this invention is further equipped with the groove | channel for fixing the said optical fiber.
Moreover, one structural example of the optical fiber connector of this invention has a flat plate transparent member arrange | positioned on the lower surface of the said optical fiber connector, and hold | maintaining the said optical fiber between the said grooves.
One configuration example of the optical fiber connector of the present invention further includes a capillary for fixing the optical fiber.

In one configuration example of the optical fiber connector of the present invention, the optical path changing unit changes the direction of the optical path by approximately 90 degrees.
In one configuration example of the optical fiber connector of the present invention, the optical path changing unit is a mirror having an angle of approximately 45 degrees with the optical axis of the optical fiber.
Moreover, in one structural example of the optical fiber connector of the present invention, the positioning means is provided with a guide hole that is provided at a position corresponding to the guide hole provided in the package and fits with the guide pin.
Further, in one configuration example of the optical fiber connector of the present invention, the positioning means includes a positioning recess that is provided at a position corresponding to the positioning recess provided in the package and is fitted to the positioning ball. is there.
Also, in one configuration example of the optical fiber connector of the present invention, the positioning means is provided at a position corresponding to a positioning recess provided in the package, and the optical fiber connector is mounted when the optical fiber connector is attached to the package. It consists of positioning protrusions that fit into the positioning recesses.
Further, in one configuration example of the optical fiber connector of the present invention, the positioning means is provided at a position corresponding to a positioning projection provided on the package, and the optical fiber connector is mounted when the optical fiber connector is attached to the package. It consists of a positioning recess that fits into the positioning projection.
Moreover, in one structural example of the optical fiber connector of the present invention, the optical fiber connector is formed by resin transfer molding.
Moreover, one structural example of the optical fiber connector of this invention mounts the said optical fiber in multiple array form.

  According to the present invention, the package and the optical fiber connector can be separately attached and detached at a portion where the allowable optical axis deviation amount in the optical coupling between the light emitting element and the light receiving element and the optical fiber is large, that is, a thick part of the light beam. Stable coupling efficiency can be obtained in connection with the optical fiber, and loss variation due to repeated attachment and detachment of the optical fiber can be suppressed. Further, by providing the positioning means, no special optical axis adjustment is required. In addition, since the coupling surface between the optical fiber connector and the package becomes flat by using the microlens and the flat plate transparent member, the optical fiber connector and the package can be connected in close contact with each other. It is also possible to suppress the influence of reflection by interposing a refractive index matching agent with the package. Furthermore, by using a microlens, the present invention can be applied to a package using an array optical element having a pitch of usually about 250 μm.

[First Embodiment]
Hereinafter, in order to clarify the objects, features, and advantages of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a perspective view showing a state in the middle of mounting of the optical module according to the first embodiment of the present invention, FIG. 2A is a cross-sectional view showing a state in the middle of mounting of the optical module in FIG. FIG. 2B is a cross-sectional view showing a state after the optical module of FIG. 1 is mounted.

  The package 1 includes an optical input / output mechanism that includes a surface light emitting element array 2 that emits light upward and a surface light receiving element array 3 that receives light from above, and an LSI chip (semiconductor integrated circuit) (not shown). This is an LSI package. The surface light emitting element array 2 and the surface light receiving element array 3 are connected to the LSI chip by electric wiring.

  On the upper surface of the package 1, a flat microlens array 4 is fixed in alignment with the optical axes of the surface light emitting element array 2 and the surface light receiving element array 3.

  On the other hand, the optical fiber connector 5 is an array fiber connector. On the lower surface of the optical fiber connector 5, a V-groove row 6 formed of a plurality of V-shaped grooves is formed. Then, one optical fiber of each of the array optical fibers 7 composed of a plurality of optical fibers is arranged in each V-shaped groove of the V-groove array 6.

  At the end of the V-groove array 6 of the optical fiber connector 5, a slope having an inclination of approximately 45 degrees is formed, leaving a stopper 8 having a vertical end surface that is high enough not to block the fiber core 16 when the optical fiber is placed. . The optical fiber is locked by bringing the end of the optical fiber into contact with the stopper 8. By depositing a metal film such as gold on the inclined surface of approximately 45 degrees, a mirror 9 is formed as an optical path changing portion having an angle of approximately 45 degrees with the fiber optical axis.

  In the present embodiment, since the relative positional relationship between the array optical fiber 7 and the mirror 9 arranged in the V groove array 6 needs to be in an optimum state, the optical fiber connector 5 and the mirror 9 are shown in FIG. It is desirable that it is integrally molded as shown. A space between the end face of the array optical fiber 7 and the mirror 9 is filled with a transparent resin 10. Thereby, it is possible to suppress end face reflection and spread of light emitted from the optical fiber.

  Next, by bonding a glass plate 11 as a flat transparent member to the surface of the optical fiber connector 5 facing the package 1, the array optical fiber 7 is pressed against the V-groove array 6 and at the same time optically coupled with the package 1. Make the plane flat. Positioning when connecting the optical fiber connector 5 to the package 1 is achieved by two guide pins 12. Therefore, two guide holes 13-1 and 13-2 for guide pins are provided in advance on the upper surface of the package 1 and the lower surface of the optical fiber connector 5, respectively.

  To attach the optical fiber connector 5 to the package 1, one end of the two guide pins 12 is inserted into the guide hole 13-1 of the package 1, and the other end of the guide pin 12 is inserted into the guide hole 13-2 of the optical fiber connector 5. And the optical fiber connector 5 is placed on the package 1. Then, in order to ensure the connection between the optical fiber connector 5 and the package 1, the optical fiber connector 5 is fixed to the package 1 by a clamp 14 made of an elastic material. The claws 20 of the clamp 14 are hooked on the depressions 15 for the clamp claws provided in advance on the two side surfaces of the package 1. At this time, the optical fiber connector 5 is pressed against the package 1 by the elasticity of the clamp 14.

  On the light output side, as shown in FIG. 2B, the light beam from each surface light emitting element in the surface light emitting element array 2 is emitted above the package, and by the corresponding microlens in the flat microlens array 4. The light is condensed and the radiation angle is narrowed, reflected by the mirror 9 and converted into an optical path by 90 degrees, and then incident on the fiber core 16 of the corresponding optical fiber in the array optical fiber 7.

  On the other hand, on the light input side, the outgoing light from each optical fiber in the array optical fiber 7 is reflected by the mirror 9 and converted into an optical path 90 degrees downward, and collected by the corresponding microlens in the flat microlens array 4. The light is irradiated to narrow the radiation angle, and enters the corresponding surface light receiving element in the surface light receiving element array 3.

  When the optical fiber connector 5 is removed from the package 1, the claw 20 of the clamp 14 may be removed from the clamp claw recess 15 of the package 1. With the above-described configuration, the package 1 and the optical fiber at the portion where the allowable optical axis deviation is large, that is, the thick portion of the light beam, in the optical coupling between the surface light emitting element array 2 and the surface light receiving element array 3 and the array optical fiber 7. Since the connector 5 can be separated and attached, stable coupling efficiency can be obtained in the connection between the package 1 and the optical fiber.

  Further, since the coupling surface between the optical fiber connector 5 and the package 1 becomes flat by using the flat microlens array 4 and the glass plate 11, the optical fiber connector 5 and the package 1 are connected in close contact with each other. It is also possible to suppress the influence of reflection by interposing a refractive index matching agent between the optical fiber connector 5 and the package 1. Further, by using the flat microlens array 4, the present invention can be applied to the package 1 using an array optical element having a pitch of usually about 250 μm.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. FIG. 3 is a perspective view showing a state in the middle of mounting of the optical module according to the second embodiment of the present invention. The same components as those in FIG. 1 are denoted by the same reference numerals. In positioning the optical fiber connector 5 and the package 1, the guide pins 12 and the guide holes 13-1 and 13-2 are employed in the first embodiment. However, when the package 1 is thinned, the length of the guide pins 12 is increased. The guide pin 12 itself is difficult to manufacture.

  Therefore, in the present embodiment, instead of the guide pins 12, the positioning when the optical fiber connector 5a is connected to the package 1a is performed by the two spherical positioning balls 18. Therefore, two pyramid-shaped positioning recesses 17-1 and 17-2 are provided in advance on the upper surface of the package 1a and the lower surface of the optical fiber connector 5a.

  To attach the optical fiber connector 5a to the package 1a, the optical fiber connector 5a is placed on the package 1a so that the two positioning balls 18 are accommodated in the positioning recesses 17-1 and 17-2. Then, the optical fiber connector 5a is fixed to the package 1a using the clamp 14. Other configurations are the same as those in the first embodiment. Since the positioning ball 18 having a small size is difficult to handle, it is previously bonded to either the positioning recess 17-1 on the package 1 side or the positioning recess 17-2 on the optical fiber connector 5a side.

[Third Embodiment]
Next, a third embodiment of the present invention will be described. FIG. 4 is a perspective view showing a state in the middle of mounting of the optical module according to the third embodiment of the present invention. The same components as those in FIG. In the present embodiment, two positioning protrusions 19 are provided on the upper surface of the package 1b, two positioning recesses 21 are provided on the optical fiber connector 5b side corresponding to the protrusions 19, and the optical fiber connector 5b is attached to the package 1b. In this case, the positioning protrusion 19 and the positioning recess 21 are fitted together to position the optical fiber connector 5b and the package 1b.

[Fourth Embodiment]
Hereinafter, more specific embodiments of the present invention will be described. In the first to third embodiments, the surface light emitting element array 2 is a vertical cavity surface-emitting laser (hereinafter referred to as VCSEL) array, and the surface light receiving element array 3 is a surface light receiving PIN. A photodiode array is used. The optical fiber is a GI62.5 or GI50 multimode fiber, the pitch of each optical fiber in the array optical fiber 7 is 250 μm, and similarly the pitch of each optical element in the surface light emitting element array 2 and the surface light receiving element array 3 is 250 μm. To do.

  The optical fiber connectors 5, 5a, 5b are integrally formed with a V-groove array 6, a stopper 8, a substantially 45-degree inclined surface (mirror 9), a guide hole 13-2, positioning recesses 17-2, 21 and the like by resin transfer molding. It is a thing. The mirror 9 is formed by vapor-depositing a metal film such as gold on the inclined surface of approximately 45 degrees.

  The transparent resin 10 is obtained by curing an ultraviolet curable adhesive. That is, when the array optical fiber 7 is fixed to the V-groove array 6, the space around the array optical fiber 7 and the space between the end surface of the array optical fiber 7 and the mirror 9 is filled with the ultraviolet curable adhesive, and the glass plate 11, the array optical fiber 7 is pressed against the V-groove array 6, the ultraviolet curable adhesive is cured by irradiating ultraviolet rays, and the array optical fiber 7 and the glass plate 11 are fixed to the optical fiber connectors 5, 5a, 5b.

  The packages 1, 1 a, and 1 b are similarly manufactured by a resin transfer mold, and are provided with a guide hole 13-1, a clamp claw recess 15, a positioning recess 17-1, and a positioning projection 19. The mounting height of the surface light emitting element array 2 and the surface light receiving element array 3, the surface light emitting element array 2 and the surface light receiving so that the distance between the surface light emitting element array 2 and the surface light receiving element array 3 and the flat microlens array 4 is optimized. The thickness of the element array 3 is adjusted as appropriate.

  Note that the present invention is not limited to the above-described embodiments, and it is obvious that the embodiments can be appropriately changed within the scope of the technical idea of the present invention. For example, the array optical fiber 7 may be replaced with an optical waveguide array, the V groove array 6 of the optical fiber connectors 5, 5a, 5b may be replaced with a capillary, and the optical fiber connectors 5, 5a, 5b and the package 1 may be replaced. May be formed by cutting.

  The present invention can be applied to an optical module.

It is a perspective view which shows the mode in the middle of mounting of the optical module used as the 1st Embodiment of this invention. It is sectional drawing which shows the mode in the middle of mounting of the optical module of FIG. 1, and after mounting. It is a perspective view which shows the mode in the middle of mounting of the optical module used as the 2nd Embodiment of this invention. It is a perspective view which shows the mode in the middle of mounting of the optical module used as the 3rd Embodiment of this invention. It is a perspective view which shows the structure of the conventional optical module. It is a figure for demonstrating the problem on the optical system in the structure of the optical module of FIG. It is sectional drawing which shows the structure of the other conventional optical module.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1, 1a, 1b ... Package, 2 ... Surface light emitting element array, 3 ... Surface light receiving element array, 4 ... Flat micro lens array 5, 5a, 5b ... Optical fiber connector, 6 ... V groove array, 7 ... Array optical fiber 8 ... Stopper, 9 ... Mirror, 10 ... Transparent resin, 11 ... Glass plate, 12 ... Guide pin, 13-1, 13-2 ... Guide hole, 14 ... Clamp, 15 ... Dimple for clamp claw, 16 ... Fiber core , 17-1, 17-2: positioning recesses, 18: positioning balls, 19: positioning projections, 20: claws, 21: positioning recesses.

Claims (35)

A package on which at least one of a light emitting element and a light receiving element is mounted;
A microlens fixed to the package so as to be positioned on an optical path of light emitted from the light emitting element and / or incident light to the light receiving element;
An optical fiber connector that includes an optical path, and includes an optical path changing unit that changes an optical path direction so that the light emitting element and / or the light receiving element and the optical fiber are optically coupled via the microlens;
Positioning means for mechanically positioning the package and the optical fiber connector so that the light emitting element and / or the light receiving element and the optical fiber are optically coupled via the micro lens and the optical path changing unit;
An optical module comprising fixing means for detachably fixing the optical fiber connector to the package. The optical module according to claim 1,
The optical module is a flat microlens. The optical module according to claim 1 or 2,
The optical module is characterized in that the fixing means is made of an elastic material. A package on which at least one of a light emitting element and a light receiving element is mounted;
An optical fiber connector that includes an optical path, and includes an optical path changing unit that changes an optical path direction so that the light emitting element and / or the light receiving element and the optical fiber are optically coupled;
Positioning means for mechanically positioning the package and the optical fiber connector so that the light emitting element and / or the light receiving element and the optical fiber are optically coupled via the optical path changing unit;
An optical module comprising fixing means made of an elastic material for detachably fixing the optical fiber connector to the package. A package on which at least one of a light emitting element and a light receiving element is mounted;
An optical fiber connector that includes an optical path, and includes an optical path changing unit that changes an optical path direction so that the light emitting element and / or the light receiving element and the optical fiber are optically coupled;
Positioning means for mechanically positioning the package and the optical fiber connector so that the light emitting element and / or the light receiving element and the optical fiber are optically coupled via the optical path changing unit;
The optical module is characterized in that the optical fiber connector has a means that can be detachably fixed to the package by a fixing means made of an elastic material, and is held by the fixing means. The optical module according to any one of claims 1 to 5,
The positioning means is provided on each contact surface of the package and the optical fiber connector corresponding to the guide pin, and is fitted to the guide pin when the optical fiber connector is attached to the package. An optical module comprising a guide hole. The optical module according to any one of claims 1 to 5,
The positioning means is provided on each contact surface of the package and the optical fiber connector corresponding to the positioning ball and the positioning ball. When the optical fiber connector is attached to the package, the positioning means An optical module comprising a positioning recess for fitting with a ball for use. The optical module according to any one of claims 1 to 5,
The positioning means is provided on a positioning protrusion provided on one of the contact surfaces of the package and the optical fiber connector, and provided on the remaining one of the contact surfaces corresponding to the positioning protrusion, An optical module comprising: a positioning recess that fits with the positioning protrusion when the optical fiber connector is mounted on the package. In the optical module according to any one of claims 1 to 8,
The optical module is formed of a resin transfer mold. The optical module according to any one of claims 1 to 9,
An optical module comprising a plurality of optical fibers mounted in an array. The optical module according to any one of claims 1 to 10,
The optical module, wherein the optical fiber connector is inserted and removed in a direction substantially perpendicular to the package surface. A package in which an optical fiber connector can be attached and detached,
At least one of the light emitting element and the light receiving element is mounted,
A microlens fixed so as to be positioned on an optical path of light emitted from the light emitting element and / or incident light to the light receiving element;
Positioning means for mechanically positioning the optical fiber connector and the package so that light emitted from the light emitting element or incident light to the light receiving element and the optical fiber connector are optically coupled via the microlens. And a package. The package of claim 12,
The package characterized in that the microlens is a flat microlens. The package according to claim 12 or 13,
The package further comprises fixing means for detachably fixing the optical fiber connector to the package. The package of claim 14, wherein
The package characterized in that the fixing means is made of an elastic material. A package in which an optical fiber connector can be attached and detached,
At least one of the light emitting element and the light receiving element is mounted,
Positioning means for mechanically positioning the optical fiber connector and the package so that light emitted from the light emitting element or incident light to the light receiving element and the optical fiber connector are optically coupled;
A package characterized in that the optical fiber connector can be detachably fixed by a fixing means made of an elastic material and is held by the fixing means. A package in which an optical fiber connector can be attached and detached,
At least one of the light emitting element and the light receiving element is mounted,
Positioning means for mechanically positioning the optical fiber connector and the package so that light emitted from the light emitting element or incident light to the light receiving element and the optical fiber connector are optically coupled;
And a fixing means made of an elastic material that enables the optical fiber to be detachably fixed. The package according to any one of claims 12 to 17,
The package characterized in that the positioning means includes a guide hole that is provided at a position corresponding to a guide hole provided in the optical fiber connector and fits into a guide pin. The package according to any one of claims 12 to 17,
The package according to claim 1, wherein the positioning means includes a positioning recess provided at a position corresponding to a positioning recess provided in the optical fiber connector and fitted to a positioning ball. The package according to any one of claims 12 to 17,
The positioning means includes a positioning protrusion provided at a position corresponding to a positioning recess provided in the optical fiber connector and fitted with the positioning recess when the optical fiber connector is mounted on the package. Package characterized by that. The package according to any one of claims 12 to 17,
The positioning means includes a positioning recess provided at a position corresponding to a positioning protrusion provided on the optical fiber connector and fitted with the positioning protrusion when the optical fiber connector is mounted on the package. Package characterized by that. The package according to any one of claims 12 to 21,
A package comprising a plurality of light emitting elements or light receiving elements mounted in an array. At least one of a light emitting element and a light receiving element is mounted, and is detachable from a package in which a microlens is fixed so as to be positioned on an optical path of light emitted from the light emitting element and / or incident light to the light receiving element. An optical fiber connector,
Optical fiber,
An optical path changing unit that changes the direction of the optical path so that the optical input / output unit of the package and the optical fiber are optically coupled;
An optical fiber connector comprising positioning means for mechanically positioning the package such that the package and the optical fiber are optically coupled via the optical path changing unit. An optical fiber connector detachably attached to a package on which at least one of a light emitting element and a light receiving element is mounted,
Optical fiber,
An optical path changing unit that changes the direction of the optical path so that the optical input / output unit of the package and the optical fiber are optically coupled;
Positioning means for mechanically positioning the package so that the package and the optical fiber are optically coupled via the optical path changing unit;
The optical fiber connector and the package can be fixed by a detachable fixing means, and the fixing means is made of an elastic material. The optical fiber connector according to claim 23 or 24,
Furthermore, the optical fiber connector characterized by providing the groove | channel for fixing the said optical fiber. The optical fiber connector according to claim 25, wherein
The optical fiber connector further includes a flat plate transparent member that is disposed on a lower surface of the optical fiber connector and holds the optical fiber between the optical fiber connector and the groove. The optical fiber connector according to claim 23 or 24,
The optical fiber connector further comprises a capillary for fixing the optical fiber. The optical fiber connector according to any one of claims 23 to 27,
The optical path changing unit changes the direction of the optical path by approximately 90 degrees. The optical fiber connector according to any one of claims 23 to 28,
The optical fiber connector, wherein the optical path changing unit is a mirror having an angle of about 45 degrees with the optical axis of the optical fiber. The optical fiber connector according to any one of claims 23 to 29,
The optical fiber connector according to claim 1, wherein the positioning means includes a guide hole that is provided at a position corresponding to a guide hole provided in the package and fits with a guide pin. The optical fiber connector according to any one of claims 23 to 29,
The optical fiber connector according to claim 1, wherein the positioning means includes a positioning recess that is provided at a position corresponding to the positioning recess provided in the package and is fitted to a positioning ball. The optical fiber connector according to any one of claims 23 to 29,
The positioning means includes a positioning protrusion provided at a position corresponding to a positioning recess provided in the package, and engaging with the positioning recess when the optical fiber connector is attached to the package. Features an optical fiber connector. The optical fiber connector according to any one of claims 23 to 29,
The positioning means includes a positioning recess provided at a position corresponding to a positioning protrusion provided on the package and fitted with the positioning protrusion when the optical fiber connector is attached to the package. Features an optical fiber connector. The optical fiber connector according to any one of claims 23 to 33,
The optical fiber connector is formed of a resin transfer mold. The optical fiber connector according to any one of claims 23 to 34,
An optical fiber connector comprising a plurality of optical fibers mounted in an array.

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