CN109407232B - Optical module - Google Patents
Optical module Download PDFInfo
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- CN109407232B CN109407232B CN201811532217.1A CN201811532217A CN109407232B CN 109407232 B CN109407232 B CN 109407232B CN 201811532217 A CN201811532217 A CN 201811532217A CN 109407232 B CN109407232 B CN 109407232B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4274—Electrical aspects
- G02B6/428—Electrical aspects containing printed circuit boards [PCB]
- G02B6/4281—Electrical aspects containing printed circuit boards [PCB] the printed circuit boards being flexible
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4256—Details of housings
- G02B6/426—Details of housings mounting, engaging or coupling of the package to a board, a frame or a panel
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- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
本发明公开了一种光模块，该光模块包括：底座、电路板以及光纤接口，电路板设置在底座上；电路板上设置有至少一个光纤插座，光纤接口上设置有至少一个光口单元；其中，光纤接口相对于底座可滑动，以调整光纤插座与光口单元之间的相对位置，直至光纤插座耦合于光口单元内。本发明的光模块结构简单，在不增加光模块设计难度的情况下，使得光纤接口相对于光模块的底座可以相对滑动，调整光纤插座与光口单元的相对位置，实现了光口的自校准，消除了光纤插座在光模块光口处所受到的应力，保证了光纤插座中耦合的光路不会在应力的作用下产生偏移，降低了光模块的功率损耗，提高了光信号质量。
The invention discloses an optical module, which comprises: a base, a circuit board and an optical fiber interface, the circuit board is arranged on the base; at least one optical fiber socket is arranged on the circuit board, and at least one optical port unit is arranged on the optical fiber interface; Wherein, the optical fiber interface can slide relative to the base to adjust the relative position between the optical fiber socket and the optical port unit until the optical fiber socket is coupled to the optical port unit. The optical module of the present invention has a simple structure, and without increasing the design difficulty of the optical module, the optical fiber interface can slide relatively relative to the base of the optical module, adjust the relative position of the optical fiber socket and the optical port unit, and realize the self-calibration of the optical port , which eliminates the stress of the optical fiber socket at the optical port of the optical module, ensures that the optical path coupled in the optical fiber socket will not be offset under the action of stress, reduces the power loss of the optical module, and improves the quality of the optical signal.
Description
Technical Field
The invention belongs to the technical field of optical communication, and particularly relates to an optical module.
Background
With the increasing demand for bandwidth in data communication and interconnection applications, people pay more and more attention to the bandwidth and density of data centers and high-performance computing applications. Copper interconnects face significant challenges in achieving high bandwidth performance, and their power and size requirements are not effectively applicable to higher bandwidths. Accordingly, there is a growing move to the use of optical interconnects that can handle higher bandwidths, in order to achieve longer flow lengths, consume less power, improve electromagnetic noise immunity, and provide more flexible wiring management than copper-based solutions.
However, when the speed of the Optical module is increased to 100G, a flexible Board is used to connect a TOSA (Transmitter Optical Subassembly, abbreviated as TOSA)/ROSA (Receiver Optical Subassembly, abbreviated as ROSA) Board in the conventional Optical module, and a high-frequency signal passes through corresponding solder joints of the TOSA/ROSA, the flexible Board and the module PCB Board and is subject to an increasing examination. Therefore, when the module is designed, the loss of the high-frequency signal at the welding point must be fully reserved, and the design margin of the high-frequency signal is further squeezed.
In order to solve the high frequency problem caused by the flexible board connection mode, more and more engineers tend to have no COB (Chip on board, abbreviated as COB) scheme of the flexible board, and directly place the Chip corresponding to the TOSA/ROSA on the module PCB, so that the TOSA/TORA and the module PCB are connected into a whole. The scheme skillfully avoids the use of a flexible plate, and ensures the integrity of high-frequency signals to the maximum extent. However, another problem is introduced, in the process of assembling the integrated TOSA/ROSA and module PCB into the module package, when the electrical port gold finger position is ensured, the optical fiber RECEPTACLE (RECEPTACLE) of TOSA/ROSA and the optical port position of the module package cannot completely meet the requirement of the optical port specification IEC 61754-20 anyway, so that when the optical fiber RECEPTACLE of TOSA/ROSA is assembled into the corresponding optical port of the module, a stress is always applied to the optical fiber RECEPTACLE by the module package, and the optical path coupled in the optical fiber RECEPTACLE is shifted under the stress, thereby losing part or all of the optical power.
In view of the above, overcoming the drawbacks of the prior art is an urgent problem in the art.
Disclosure of Invention
Aiming at the defects or improvement requirements of the prior art, the invention provides an optical module, aiming at enabling an optical fiber interface to slide relative to a base of the optical module without increasing the design difficulty of the optical module, adjusting the relative position of an optical fiber socket and an optical port unit, realizing the self-calibration of the optical port, eliminating the stress on the optical port of the optical module by the optical fiber socket, ensuring that a coupled optical path in the optical fiber socket cannot deviate under the action of the stress, reducing the power loss of the optical module, and improving the quality of optical signals, thereby solving the technical problem that the optical path coupled in the optical fiber socket deviates under the action of the stress due to the fact that the optical fiber socket of the optical module cannot be completely superposed with the optical port position of a module tube shell, and further losing part or all of the optical power.
To achieve the above object, according to an aspect of the present invention, there is provided an optical module including: the optical fiber connector comprises a base 1, a circuit board 2 and an optical fiber interface 3, wherein the circuit board 2 is arranged on the base 1;
the circuit board 2 is provided with at least one optical fiber socket 21, and the optical fiber interface 3 is provided with at least one optical port unit 31;
wherein the fiber optic interface 3 is slidable relative to the base 1 to adjust the relative position between the fiber optic receptacle 21 and the optical port unit 31 until the fiber optic receptacle 21 is coupled in the optical port unit 31.
Preferably, a boss 32 is arranged on the optical fiber interface 3, a groove 11 is arranged on the base 1, and the size of the groove 11 is larger than that of the boss 32;
wherein, in a direction extending along the optical port unit 31, the boss 32 is slidable relative to the groove 11 to adjust a relative position between the fiber receptacle 21 and the optical port unit 31 until the fiber receptacle 21 is coupled into the optical port unit 31.
Preferably, the groove 11 comprises two semicircular grooves 111 and a strip connecting groove 112, the strip connecting groove 112 connects the two semicircular grooves 111, wherein the width of the strip connecting groove 112 is equal to the diameter of the semicircular grooves 111;
the section of the boss 32 is circular, and the diameter of the boss 32 is matched with that of the semicircular groove 111.
Preferably, a first threaded hole 12 is formed in the base 1, the shape of the first threaded hole 12 is matched with that of the groove 11, and the central axis of the first threaded hole 12 is coincident with that of the groove 11;
a second threaded hole 33 is formed in the boss 32, the shape of the second threaded hole 33 is matched with that of the boss 32, and the central axis of the second threaded hole 33 is overlapped with that of the boss 32.
Preferably, the light module further comprises a first screw 41;
after the fiber optic receptacle 21 is coupled to the optical port unit 31, the first screw 41 is screwed with the first threaded hole 12 and the second threaded hole 33 to fix the fiber optic interface 3.
Preferably, the optical fiber interface 3 includes two side walls 34 and a bottom wall 35, which are oppositely disposed, and the boss 32 is disposed on the bottom wall 35;
the bottom wall 35 is disposed between two side walls 34, the bottom wall 35 is connected with the side walls 34 through a guide arm 36, wherein the guide arm 36 is inclined to the bottom wall 35;
preferably, the circuit board 2 is provided with a positioning groove 22, and the base 1 is provided with a positioning column 13;
the positioning column 13 is accommodated in the positioning groove 22, so as to fix the circuit board 2 on the base 1.
Preferably, a third threaded hole 14 is formed in the base 1, and the third threaded hole 14 is arranged adjacent to the positioning column 13;
a fourth threaded hole 23 is formed in the circuit board 2, and the fourth threaded hole 23 is arranged adjacent to the positioning groove 22;
the second screw 42 is screwed into the third screw hole 14 and the fourth screw hole 23.
Preferably, a beam 37 is arranged on the optical fiber interface 3;
the optical module further comprises an upper cover 5, wherein a shielding boss 51 is arranged on the upper cover 5, the shielding boss 51 is arranged on the beam 37, and the shielding boss 51 and the beam 37 compensate each other, so that the position of the upper cover 5 relative to the optical fiber interface 3 is fixed.
Preferably, the upper cover 5 further comprises at least one optical fiber indent 52, and the position of the optical fiber indent 52 corresponds to the position of the optical port unit 31;
wherein the fiber press groove 52 and the corresponding optical port unit 31 are engaged with each other to surround the corresponding fiber receptacle 21.
Generally, compared with the prior art, the technical scheme of the invention has the following beneficial effects: the optical module has a simple structure, enables the optical fiber interface to relatively slide relative to the base of the optical module without increasing the design difficulty of the optical module, adjusts the relative position of the optical fiber socket and the optical port unit, realizes the self-calibration of the optical port, eliminates the stress on the optical fiber socket at the optical port of the optical module, ensures that the optical path coupled in the optical fiber socket cannot deviate under the action of stress, reduces the power loss of the optical module, and improves the quality of optical signals.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is an exploded schematic view of an optical module according to an embodiment of the present invention;
fig. 2 is an exploded schematic view of another optical module according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an optical fiber interface according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a base according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a circuit board according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of an upper cover according to an embodiment of the present invention;
fig. 7 is a schematic diagram of an overall structure of an optical module according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram of another optical fiber interface provided by an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of another base provided in the embodiments of the present invention;
fig. 10 is a schematic side view of an optical module according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, the terms "inner", "outer", "longitudinal", "lateral", "upper", "lower", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are for convenience only to describe the present invention without requiring the present invention to be necessarily constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1:
an embodiment of the present invention provides an optical module, as shown in fig. 1, the optical module includes: the optical fiber connector comprises a base 1, a circuit board 2 and an optical fiber interface 3, wherein the circuit board 2 is arranged on the base 1, at least one optical fiber socket 21 (accept) is arranged on the circuit board 2, at least one optical port unit 31 is arranged on the optical fiber interface 3, and the optical port unit 31 is used for accommodating the corresponding optical fiber socket 21. The number of the optical port units 31 and the number of the optical fiber sockets 21 are not particularly limited, and may be designed according to actual situations. In addition, the number of the optical port units 31 may be equal to the number of the optical fiber sockets 21, or the number of the optical port units 31 is greater than the number of the optical fiber sockets 21, depending on the specific application.
During assembly, the fiber optic interface 3 is driven by an external force to slide relative to the base 1 to adjust the relative position between the fiber optic receptacle 21 and the optical port unit 31 until the fiber optic receptacle 21 is coupled in the optical port unit 31. In the present embodiment, the fiber receptacle 21 is exactly coupled to the optical port unit 31, as shown in fig. 10, the distance H between the center of the fiber receptacle 21 and the bottom surface of the optical port unit 31 is 2.29mm, and the center of the fiber receptacle 21 is located on the central surface of the corresponding optical port unit 31 in the horizontal direction, so as to ensure that the fiber receptacle 21 and the optical port unit 31 are completely coupled in the horizontal direction and the vertical direction, and meet the requirements of the optical port specification IEC 61754-20.
The optical module of the embodiment has a simple structure, and enables the optical port to slide relative to the base 1 of the optical module without increasing the design difficulty of the optical module, thereby realizing the self-calibration of the optical port, eliminating the stress on the optical port of the optical fiber socket 21, ensuring that the optical path coupled in the optical fiber socket 21 does not deviate under the action of the stress, reducing the power loss of the optical module, and improving the quality of optical signals.
One of the realizations of the optical module of the present embodiment is described below with reference to fig. 2 to 7.
In the present embodiment, as shown in fig. 2, the optical module includes: the optical fiber connector comprises a base 1, a circuit board 2 and an optical fiber interface 3, wherein the circuit board 2 is arranged on the base 1, at least one optical fiber socket 21 (accept) is arranged on the circuit board 2, at least one optical port unit 31 is arranged on the optical fiber interface 3, and the optical port unit 31 is used for accommodating the corresponding optical fiber socket 21.
As shown in fig. 3 and 4, a boss 32 is disposed on the optical fiber interface 3, a groove 11 is disposed on the base 1, and the size of the groove 11 is larger than that of the boss 32. Wherein, in a direction extending along the optical port unit 31, the boss 32 is slidable relative to the groove 11 to adjust a relative position between the fiber receptacle 21 and the optical port unit 31 until the fiber receptacle 21 is coupled into the corresponding optical port unit 31.
In an actual application scenario, the number of the bosses 32 is not specifically limited, and may be one, two, or four, and may be determined according to an actual situation; the number of the grooves 11 is not particularly limited, and may be one, two or four, and it is sufficient to ensure that the number of the grooves 11 is not less than the number of the bosses 32 according to actual conditions. In addition, the distribution relationship between the bosses 32 and the grooves 11 can be reasonably designed according to actual conditions, so that the convenience and the stability of installation are ensured.
In the actual installation process, the bottom surface of the optical fiber interface 3 is in physical contact with the positioning platform 15 of the base 1, the boss 32 is placed in the groove 11, the boss 32 is in clearance fit with the groove 11, and the boss 32 can slide in the groove 11, so that the relative position between the optical fiber interface unit 31 and the optical fiber socket 21 is adjusted, and the optical fiber socket 21 and the optical fiber interface unit 31 are completely matched and overlapped.
In an alternative embodiment, the groove 11 includes two semi-circular grooves 111 and a strip connecting groove 112, the strip connecting groove 112 connects the two semi-circular grooves 111, wherein the width of the strip connecting groove 112 is equal to the diameter of the semi-circular groove 111; the section of the boss 32 is circular, and the diameter of the boss 32 is matched with that of the semicircular groove 111.
In a practical application scenario, the depth of the groove 11 is not less than the height of the boss 32, so that the boss 32 can be accommodated in the groove 11. The diameter of the boss 32 is slightly smaller than that of the semicircular groove 111, for example, the boss 32 is close to tangent with the groove 11, and the boss 32 can slide along the direction of the strip-shaped connecting groove 112, so as to adjust the relative position between the optical port unit 31 and the fiber receptacle 21.
After the optical module is assembled, the optical fiber interface 3 needs to be firmly fixed on the base 1, so that the noise influence on the optical module caused by pulling and inserting the optical module is avoided, and the reliability of the optical module is improved. In a preferred embodiment, the base 1 is provided with a first threaded hole 12, the shape of the first threaded hole 12 matches the shape of the groove 11, and the central axis of the first threaded hole 12 coincides with the central axis of the groove 11. Specifically, the shape of the first threaded hole 12 may be the same as the shape of the recess 11, except that the size of the first threaded hole 12 is smaller than the size of the recess 11.
A second threaded hole 33 is formed in the boss 32, the shape of the second threaded hole 33 is matched with that of the boss 32, and the central axis of the second threaded hole 33 is overlapped with that of the boss 32. Specifically, the shape of the second threaded hole 33 may be the same as the shape of the boss 32, except that the size of the second threaded hole 33 is smaller than the size of the boss 32.
As shown in fig. 2, the optical module further includes a first screw 41, and after the optical fiber receptacle 21 is coupled to the optical port unit 31, the first screw 41 is screwed into the first threaded hole 12 and the second threaded hole 33 to fix the optical fiber interface 3. Wherein the number of the first screws 41 matches the number of the grooves 11, for example, the number of the first screws 41 is equal to the number of the grooves 11.
In a specific application scenario, the first threaded hole 12 penetrates through the base 1, the second threaded hole 33 penetrates through at least part of the boss 32, and the first screw 41 sequentially penetrates through the first threaded hole 12 and the second threaded hole 33, so that the optical fiber interface 3 is fixed on the base 1.
In this embodiment, after the positions of the optical fiber receptacle 21 and the optical fiber port unit 31 are adjusted, the central axis of the first threaded hole 12 coincides with the central axis of the second threaded hole 33, and the diameter of the boss 32 is approximately equal to the diameter of the semicircular groove 111 (the width of the strip-shaped connecting groove 112), so that the change of the position of the boss 32 caused by the lateral stress on the boss 32 during the process of screwing the first screw 41 is effectively avoided. On the other hand, the optical fiber interface 3 is fixed on the base 1 through the first screw 41, so that the reliability and stability of the optical module in subsequent use are ensured.
Furthermore, a positioning groove 22 is formed in the circuit board 2, a positioning column 13 is arranged on the base 1, and the positioning column 13 is accommodated in the positioning groove 22 so as to fix the circuit board 2 on the base 1. In an alternative embodiment, the number of the positioning slots 22 is two, two positioning slots 22 are distributed on two sides of the circuit board 2, and the positioning slots 22 are disposed adjacent to the gold fingers 24. Correspondingly, the number of the positioning columns 13 is also two, the two positioning columns 13 are respectively distributed on two sides of the base 1, and in the actual installation process, the positioning columns 13 are accommodated in the positioning grooves 22, so that the circuit board 2 is fixed on the base 1.
For example, the positioning slot 22 may be a hollow hole, and the positioning column 13 is inserted into the positioning hole to fix the circuit board 2 on the base 1. However, this solution has high requirements for alignment and is inconvenient to install. In a preferred embodiment, the positioning groove 22 includes a lateral opening, the positioning column 13 may specifically be a clamping boss 32, and the clamping boss 32 enters the positioning groove 22 through the lateral opening to realize clamping, so as to fix the circuit board 2 on the base 1.
In a preferred embodiment, the circuit board 2 is further provided with a fourth threaded hole 23, the fourth threaded hole 23 is disposed adjacent to the positioning slot 22, the base 1 is provided with a third threaded hole 14, the third threaded hole 14 is disposed adjacent to the positioning column 13, and the second screw 42 fixedly connects the circuit board 2 and the base 1 through the fourth threaded hole 23 and the third threaded hole 14. In this embodiment, the circuit board 2 is fixed on the base 1 by a secondary reinforcing method, so that the stability of fixing is ensured, and the circuit board 2 is prevented from shaking relative to the base 1, thereby indirectly ensuring the coupling between the optical fiber receptacle 21 and the optical port unit 31.
Here, the first screw 41 and the second screw 42 of the present embodiment may be screws having the same structure, or screws having different structures, and may be selected according to actual circumstances. In the present embodiment, the screw connection may be replaced by another connection method, such as a bolt connection, which is not listed here.
In the present embodiment, an optical component 25 is further disposed on the circuit board 2, wherein the optical component 25 may be an optical transmitter, an optical receiver, or an optical transceiver, and the fiber receptacle 21 is disposed on the optical component 25.
In a specific application scenario, the optical module further includes an upper cover 5, and the upper cover 5 and the base 1 are mutually matched to form a cavity for accommodating the circuit board 2 and the optical fiber interface 3. Specifically, the upper cover 5 is provided with a shielding boss 51, the optical fiber interface 3 is provided with a beam 37, and the shielding boss 51 is arranged on the beam 37, wherein the shielding boss 51 and the beam 37 compensate each other, so that the position of the upper cover 5 relative to the optical fiber interface 3 is fixed. In addition, the upper cover 5 further comprises at least one optical fiber pressing groove 52, and the position of the optical fiber pressing groove 52 corresponds to the position of the light port unit 31; wherein the fiber press groove 52 and the optical port unit 31 are engaged with each other to surround the corresponding fiber receptacle 21.
In a specific application scenario, as shown in fig. 3, the optical fiber interface 3 includes two side walls 34 and a bottom wall 35, which are disposed opposite to each other, the boss 32 is disposed on the bottom wall 35, and the bottom wall 35 is disposed between the two side walls 34. The upper cover 5 is provided with a shielding groove 53, and the shielding groove 53 is used for accommodating the side wall 34 of the optical fiber interface 3 so as to arrange the upper cover 5 on the optical fiber interface 3. Meanwhile, the base 1 is provided with side walls 16 oppositely arranged, and the side walls 16 are correspondingly accommodated in the corresponding shielding grooves 53 on the upper cover 5.
In this embodiment, as shown in fig. 2, the optical module further includes a pull ring 6, the pull ring 6 includes two clamping arms 61 arranged oppositely, an unlocking portion 62 is arranged at an end of each clamping arm 61, the clamping arms 61 clamp the side wall 34 of the base 1 to realize detachable connection, and the unlocking portion 62 is accommodated in the limiting groove 17, as shown in fig. 7, the optical module is obtained after the components are assembled. In actual use, an external force is applied to the pull ring 6 to drive the unlocking part 62 to move, so that the optical module can be moved out of the corresponding shielding cage, and the unlocking function is realized.
Here, it should be noted that the design concept of the present embodiment is applicable to an optical module of the COB scheme, and is also applicable to an optical module based on the flexible board scheme.
Although the optical fiber interface 3 of the present embodiment can slide relative to the base 1, and the relative position between the optical fiber receptacle 21 and the optical port unit 31 is adjusted, so that the optical port is self-aligned, the stress applied to the optical fiber receptacle 21 at the optical port of the optical module is eliminated, and it is ensured that the optical path coupled in the optical fiber receptacle 21 does not deviate under the action of the stress.
However, in the actual assembly process, the circuit board 2 is fixed on the base 1, and then the optical fiber interface 3 is fixed on the base 1 by the matching of the boss 32 and the groove 11. The interval between the optical fiber socket 21 on the circuit board 2 and the base 1 is small, which can interfere the installation of the optical fiber interface 3, greatly increases the installation difficulty of the optical fiber interface 3, and reduces the production efficiency. Meanwhile, the fiber optic receptacle 21 is easily damaged during the installation process, and the yield of the product is reduced.
Example 2:
in order to solve the problem of embodiment 1, this embodiment is improved based on the optical module of embodiment 1, and another optical module is provided, which is different from the optical module of embodiment 1, in that a bottom wall 35 and a side wall 34 of the optical fiber interface 3 of this embodiment are connected by a guide arm 36, where the guide arm 36 is inclined to the bottom wall 35. Under the guidance of the guide arm 36, the boss 32 of the optical fiber interface 3 is accommodated in the groove 11 by adopting an oblique insertion mode, so that the interference of the optical fiber socket 21 on the optical fiber interface 3 can be greatly reduced, the installation difficulty of the optical fiber interface 3 is reduced, and the production efficiency is improved. Meanwhile, in the installation process, the optical fiber interface 3 can be prevented from mistakenly touching the optical fiber socket 21, and the product yield is improved.
One of the implementation modes of the optical module according to the present embodiment is specifically described with reference to embodiment 1 and fig. 8.
The optical module of the present embodiment includes: the optical fiber connector comprises a base 1, a circuit board 2 and an optical fiber interface 3, wherein the circuit board 2 is arranged on the base 1, at least one optical fiber socket 21 (accept) is arranged on the circuit board 2, at least one optical port unit 31 is arranged on the optical fiber interface 3, and the optical port unit 31 is used for accommodating the corresponding optical fiber socket 21.
The optical fiber connector 3 is provided with a boss 32, the base 1 is provided with a groove 11, and the size of the groove 11 is larger than that of the boss 32. Wherein, in a direction extending along the optical port unit 31, the boss 32 is slidable relative to the groove 11 to adjust a relative position between the fiber receptacle 21 and the optical port unit 31 until the fiber receptacle 21 is coupled into the corresponding optical port unit 31.
In the actual installation process, the bottom surface of the optical fiber interface 3 is in physical contact with the positioning platform 15 of the base 1, the boss 32 is placed in the groove 11, the boss 32 is in clearance fit with the groove 11, and the boss 32 can slide in the groove 11, so that the relative position between the optical fiber interface unit 31 and the optical fiber socket 21 is adjusted, and the optical fiber socket 21 and the optical fiber interface unit 31 are completely matched and overlapped.
In an alternative embodiment, the groove 11 includes two semi-circular grooves 111 and a strip connecting groove 112, the strip connecting groove 112 connects the two semi-circular grooves 111, wherein the width of the strip connecting groove 112 is equal to the diameter of the semi-circular groove 111; the section of the boss 32 is circular, and the diameter of the boss 32 is matched with that of the semicircular groove 111.
In a practical application scenario, the depth of the groove 11 is not less than the height of the boss 32, so that the boss 32 can be accommodated in the groove 11. The diameter of the boss 32 is slightly smaller than that of the semicircular groove 111, for example, the boss 32 is close to tangent with the groove 11, and the boss 32 can slide along the direction of the strip-shaped connecting groove 112, so as to adjust the relative position between the optical port unit 31 and the fiber receptacle 21.
In this embodiment, in order to facilitate the placement of the boss 32 in the groove 11, the guide arm 36 is disposed at the bottom of the optical fiber interface 3, and the boss 32 of the optical fiber interface 3 is accommodated in the groove 11 by being obliquely inserted under the guidance of the guide arm 36. Specifically, the optical fiber interface 3 includes two side walls 34 and a bottom wall 35, which are oppositely disposed, and the boss 32 is disposed on the bottom wall 35; the bottom wall 35 is disposed between two side walls 34, the bottom wall 35 is connected with the side walls 34 through a guide arm 36, wherein the guide arm 36 is inclined to the bottom wall 35; the guide arm 36 serves to guide the boss 32 into the recess 11.
In the actual design process, the inclination angle between the guide arm 36 and the bottom wall 35 and the length of the guide arm 36 are designed based on the interval between the fiber optic receptacle 21 and the base 1, for example, the inclination angle may be 10 degrees, 30 degrees or 50 degrees, and the like, which is designed according to the actual situation and is not limited herein.
In the actual installation process, the guide arm 36 is firstly contacted with the positioning platform 15 of the base 1, then under the guidance of the guide arm 36, part of the optical fiber interface 3 is extended to the lower surface of the optical fiber socket 21, when the boss 32 moves to the groove 11, the optical fiber interface 3 is slowly pressed downwards, the bottom wall 35 is slowly attached to the positioning platform 15, so that the boss 32 is accommodated in the groove 11. Finally, driven by an external force, the boss 32 moves relative to the groove 11, and the relative positions of the fiber receptacle 21 and the optical port unit 31 are adjusted, so that the fiber receptacle 21 and the optical port unit 31 are completely overlapped.
Other structures of the optical module are the same as those of embodiment 1, and specific details are shown in fig. 1 to 7 and related description, which are not repeated herein.
The optical module of the embodiment has a simple structure, and under the condition that the design difficulty of the optical module is not increased, the optical fiber interface 3 can slide relative to the base 1 of the optical module, and the relative position of the optical fiber socket 21 and the optical port unit 31 is adjusted, so that the self-calibration of the optical port is realized, the stress applied to the optical fiber socket 21 at the optical port of the optical module is eliminated, the deviation of a coupled optical path in the optical fiber socket 21 under the action of stress is avoided, the power loss of the optical module is reduced, and the optical signal quality is improved.
On the other hand, under the guidance of the guide arm 36, the boss 32 of the optical fiber interface 3 is accommodated in the groove 11 in an inclined insertion manner, so that the interference of the optical fiber socket 21 on the optical fiber interface 3 can be greatly reduced, the installation difficulty of the optical fiber interface 3 is reduced, and the production efficiency is improved. Meanwhile, in the installation process, the optical fiber interface 3 can be prevented from mistakenly touching the optical fiber socket 21, and the product yield is improved.
Example 3:
in the above embodiments 1 and 2, the optical fiber interface 3 is screwed with the base 1 by the first screw 41 after the optical fiber receptacle 21 is just coupled with the optical port unit 31 in the manufacturing process. In subsequent use, if the relative position between the fiber receptacle 21 and the optical port unit 31 needs to be readjusted, the first screw 41 can be loosened to readjust the relative position between the fiber receptacle 21 and the optical port unit 31, so that the fiber receptacle 21 is just coupled to the optical port unit 31, thereby meeting the requirements of the optical port specification IEC 61754-20.
Different from the foregoing embodiments 1 and 2, in this embodiment, after the optical module leaves factory, the optical fiber interface 3 can slightly float (nm level) with respect to the base 1, and the optical fiber connector is coupled and butted with the female seat formed by the optical fiber interface 3 and the optical fiber receptacle 21, so that the optical fiber receptacle 21 is exactly coupled in the corresponding optical port unit 31, thereby meeting the requirements of the optical port specification IEC 61754-20.
Specifically, as shown in fig. 9, the groove 11 on the base 1 is a circular groove, the first threaded hole 12 penetrates through the groove 11, the shape of the first threaded hole 12 matches the shape of the groove 11, and the central axis of the first threaded hole 12 coincides with the central axis of the groove 11; a second threaded hole 33 is formed in the boss 32, the shape of the second threaded hole 33 is matched with that of the boss 32, the central axis of the second threaded hole 33 is overlapped with that of the boss 32, the boss 32 is circular, the second threaded hole 33 is circular, and the size of the second threaded hole 33 is matched with that of the first threaded hole 12.
Unlike the above embodiments 1 and 2, the second threaded hole 33 of the present embodiment is a through hole, and has no internal thread; the first threaded hole 12 may or may not be internally threaded, depending on the actual situation.
The upper cover 5 is provided with corresponding threaded holes, and in the manufacturing process, after the optical fiber socket 21 and the optical fiber interface unit 31 are preliminarily calibrated and coupled, the optical fiber socket passes through the first threaded hole 12 and the second threaded hole 33 in sequence through the first screw 41 and then is in threaded connection with the threaded hole in the upper cover 5, wherein the second threaded hole 33 is in clearance fit with the first screw 41, so that the optical fiber interface 3 can slightly move relative to the base 1 (the optical fiber interface can move around). In actual use, the optical fiber connector is coupled and butted with the female seat formed by the optical fiber interface 3 and the optical fiber socket 21, so that the optical fiber socket 21 is just coupled in the corresponding optical port unit 31, thereby meeting the requirements of the optical port specification IEC 61754-20.
The specific structure of other components of the optical module is the same as the embodiment described above, and is not described herein again.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811532217.1A CN109407232B (en) | 2018-12-14 | 2018-12-14 | Optical module |
| PCT/CN2018/123704 WO2020118771A1 (en) | 2018-12-14 | 2018-12-26 | Optical module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811532217.1A CN109407232B (en) | 2018-12-14 | 2018-12-14 | Optical module |
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| Publication Number | Publication Date |
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| CN109407232A CN109407232A (en) | 2019-03-01 |
| CN109407232B true CN109407232B (en) | 2021-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811532217.1A Active CN109407232B (en) | 2018-12-14 | 2018-12-14 | Optical module |
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| Country | Link |
|---|---|
| CN (1) | CN109407232B (en) |
| WO (1) | WO2020118771A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109951987B (en) * | 2019-04-16 | 2021-01-15 | 武汉光迅科技股份有限公司 | A compact pluggable control unit structure |
| CN110488431A (en) * | 2019-08-06 | 2019-11-22 | 武汉光迅科技股份有限公司 | an optical module |
| CN111129876B (en) * | 2020-01-08 | 2021-06-08 | 华为技术有限公司 | Electric connection socket, optical module and optical module cage |
| CN112415672A (en) * | 2020-10-30 | 2021-02-26 | 武汉华工正源光子技术有限公司 | Manufacturing method of COB optical module and COB optical module |
| CN112882163B (en) * | 2021-01-19 | 2023-05-05 | 武汉电信器件有限公司 | Optical module and photoelectric connector |
| CN113219599B (en) * | 2021-04-19 | 2023-01-17 | 武汉光迅科技股份有限公司 | Optical module and optical communication equipment |
| CN114002788A (en) * | 2021-11-22 | 2022-02-01 | 索尔思光电（成都）有限公司 | Optical module with changeable structure and its manufacturing method |
| CN115128747A (en) * | 2022-06-20 | 2022-09-30 | 武汉永鼎光通科技有限公司 | Optical module, case thereof, and method for assembling optical module |
| CN116626820A (en) * | 2022-09-26 | 2023-08-22 | 武汉光迅科技股份有限公司 | A kind of assembling device and installation method of BOSA device |
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Also Published As
| Publication number | Publication date |
|---|---|
| WO2020118771A1 (en) | 2020-06-18 |
| CN109407232A (en) | 2019-03-01 |
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