TWI619981B - Optical transceiver module of solderless light guiding unit - Google Patents

Abstract

A light-receiving sub-module for a light-free light-guiding unit includes a receiving body that can be used to connect optical elements such as a light-emitting unit and a light-guiding unit. The upper end of the receiving body has an annular flange; The light guide unit has a shaft tube and a protective cover, an engaging space is formed between the shaft tube and the protective cover; and an engaging member can be inserted into the annular flange and the engaging space, thereby allowing the The receiving body and the light guiding unit become combined but not fastened. At this time, the optical guiding unit is adjusted by an optical platform until the optical signals of the light guiding unit and the light emitting unit are adjusted. Coupling light is aligned, and finally, the engaging member, the receiving body and the light guiding unit are connected through an adhesive.

Description

Optical transceiver module of solderless light guiding unit

The invention relates to a light transmitting and receiving sub-module of a light-free light guiding unit.

In optical fiber communication systems, Optical Sub-Assembly for Transceivers is an important medium in the conversion of optical signals and electrical signals. Optical transceiver sub-modules can be divided into optical transmission sub-modules that transmit optical signals. Optical Sub-Assembly (TOSA); Bi-direction Optical Sub-Assembly (BOSA) that can simultaneously hold bidirectional information in the same fiber; and can simultaneously receive digital signals and analog signals and transmit digital Signal tri-direction optical sub-assembly (TRI-DI OSA) and other types. As shown in FIG. 1, a BOSA type is used as an example for description. It has a receiving body 10 connected to a light-emitting unit 11 and a light guiding unit 12, and the light-emitting unit 11 is located on a central axis of the receiving body 10. The light emitting unit 11 and the light guiding unit 12 are accurately aligned and coupled with each other. The light guiding unit 12 is divided into a pigtail type and a socket type, and this example uses a pigtail type light guiding unit as an example.

A filter 13 is disposed inside the receiving body 10, which will cause the light signal of the light-emitting unit 11 to collide with the filter 13 as shown by the incident directions of the arrows A1-A2, thereby changing the focus of the light signal Position, therefore, the light guide unit 12 needs to be optically aligned by the X, Y, and Z axis moving platforms, so that the light signal A2 of the light emitting unit 11 and the optical fiber 14 of the light guide unit 12 Coupling light alignment, and using laser welding equipment to connect the light guide unit 12 and the housing body 10. However, when laser welding is completed, the light guide unit 12 is prone to warping due to thermal expansion and contraction, so that the light guide unit 12 and the housing body 10 cannot be completely in contact with each other and a gap S is generated, which causes optical power. Power shift causes loss of optical power and energy.

For this reason, the main object of the present invention is to provide a light guide unit that can be connected to the receiving body without welding, so as to solve the problems of the prior art.

In order to achieve the above-mentioned effects and objectives, a light-receiving sub-module for a light-free light-guiding unit according to the present invention includes a receiving body that can be used to connect optical elements such as a light-emitting unit and a light-guiding unit. The upper end portion has an annular flange; the light guide unit has a shaft tube and a protective cover, an engaging space is formed between the shaft tube and the protective cover; and an engaging member can be combined with the annular flange and The space is engaged, so that the receiving body and the light guiding unit become a combined but not fastened state, and the light guiding unit is adjusted to an optical plane by a moving platform until the light guiding unit and the light guiding unit are adjusted. The light signal of the light-emitting unit is aligned with the coupled light, and finally, the engaging member, the receiving body and the light guiding unit are connected through an adhesive.

(Knowledge)

10‧‧‧Contains the body

11‧‧‧light-emitting unit

12‧‧‧light guide unit

13‧‧‧ Filter

14‧‧‧ Optical Fiber

S‧‧‧ Clearance

(this invention)

20‧‧‧ Optical transceiver module

21‧‧‧Contains the body

22‧‧‧Port 1

23‧‧‧Second Port

24‧‧‧ Third port

25‧‧‧ annular flange

30‧‧‧light guide unit

31‧‧‧Light-emitting unit

32‧‧‧light receiving unit

33‧‧‧ shaft tube

34‧‧‧Protective cover

35‧‧‧ snap-in space

40‧‧‧ Engagement

41‧‧‧U-Shaped Collar

42‧‧‧Top Facial

43‧‧‧U-shaped mouth

44‧‧‧U-shaped groove

FIG. 1 is a sectional view of a conventional optical transceiver module.

FIG. 2 is a perspective view of the present invention.

Fig. 3 is a sectional view of the present invention.

FIG. 4 is a perspective view of the present invention, wherein the engaging member is shown in a sectional view.

FIG. 5 is a perspective view of the present invention, wherein the engaging member has not been installed on the receiving body and the light guide unit; Yuan.

FIG. 6 is a perspective view showing the engaging member of the present invention viewed from another direction.

FIG. 7 is a sectional view of FIG. 5.

In order to make those who are familiar with this technology easily understand the construction content of the present invention and the functional benefits that can be achieved, a specific embodiment is listed below, and it is described in detail in conjunction with the drawings as follows:

Please refer to FIG. 2 to FIG. 4. The light transmitting and receiving sub-module 20 of the welding-free light guiding unit according to the present invention includes a receiving body 21, a light guiding unit 30, and an engaging member 40. The receiving body 21 There are several ports. This embodiment uses three ports as an example. For example, the first port 22 is located on the top of the receiving body 21 to connect the light guide unit 30. The second port 23 is located in the receiving. The bottom of the body 21 is used to connect a light-emitting unit 31; the third connection port 24 can be used to connect a light-receiving unit 32, and its setting direction is located on the vertical axis of the light-guiding unit 30 and the light-emitting unit 31, and becomes a T-shape Containing the body, which is well-known knowledge, will not be repeated here. In addition, the optical transceiver sub-module uses a bi-direction optical sub-assembly (BOSA) as an embodiment, and the optical guiding unit uses a pigtail type optical guiding unit 30 as an embodiment. .

The present invention is characterized in that the light guiding unit 30 and the receiving body 21 are combined by the engaging member 40. The upper end of the receiving body 21 has an annular flange 25. The light guiding unit 30 includes a shaft tube 33 and a protective cover 34, and an engaging space 35 is formed between the shaft tube 33 and the protective cover 34.

As shown in FIG. 5 and FIG. 6, the engaging member 40 has a U-shaped shaft ring 41 and a top surface. The portion 42 is integrated with the U-shaped shaft ring 41. The top surface portion 42 has a U-shaped opening 43 that can be inserted into the engaging space 35 of the light guide unit 30. A concavo-convex groove is formed on the inner wall surface of the U-shaped collar 41 to correspond to the top end position of the receiving body 21. In essence, the U-shaped shaft ring 41 has a U-shaped groove 44 that can be inserted and coupled to the annular flange 25 of the receiving body 21. At this time, the card is inserted between the receiving body 21 and the light guide unit 30 through the card. The combination member 40 makes it into a combined but not fastened state, and allows the light guide unit 30 to make a slight plane displacement.

FIG. 7 shows that the engaging member 40 of the present invention is ready to be installed between the accommodating body 21 and the light guide unit 30. The light guide unit 30 is first placed in the first connection port 22 of the accommodating body 21, and then the The engaging member 40 is installed between the receiving body 21 and the light guide unit 30, and the U-shaped opening 43 of the top surface portion 42 is inserted into the engaging space 35 of the light guide unit 30, and the U-shaped groove 44 is embedded. At the annular flange 25 of the light guiding unit 30, the receiving body 21 and the light guiding unit 30 are brought into a combined but not fastened state by the engaging member 40, and the light guide is guided. The unit 30 can make a slight plane displacement, and the light guide unit 30 can adjust the optical plane by an X and Y axis moving platform (not shown) until the optical fiber of the light guide unit 30 and the light emitting unit 31 The optical signal is coupled to the optical alignment, and finally, the engaging member 40, the receiving body 21 and the light guiding unit 30 are connected through an adhesive, as shown in FIG. 2.

The above description is only a description of a preferred embodiment of the present application, and is not intended to limit the present invention in any way. Anyone skilled in this art may use the disclosed technical content to modify or modify other embodiments without departing from the spirit and scope of the present invention. The scope of the present invention is limited only by the scope of the following patent applications.

Claims (2)

A light transmitting and receiving sub-module of a welding-free light guiding unit. The light transmitting and receiving sub-module has a receiving body that can be used to connect optical elements: a light emitting unit and a light guiding unit, and the light emitting unit is arranged on the receiving body. At the bottom, the light guiding unit is disposed on the top of the receiving body, the light guiding unit has a shaft tube and a protective cover; the optical transceiver module includes: the receiving body, an upper end of which has an annular flange; And an engaging piece, which has a U-shaped shaft ring, a top surface and the U-shaped shaft ring are integrated into a structure, and the top surface is combined outside the light guide unit, and the inner wall surface of the U-shaped shaft ring A U-shaped groove can be combined with the annular flange of the accommodating body, so that the accommodating body and the light guide unit can be combined but not fastened by the engaging member, so that the light guide The unit can make a slight plane displacement. At this time, the optical guiding unit is adjusted by a moving platform to adjust the optical plane until the light guiding unit and the light signal of the light emitting unit are coupled and aligned. Finally, the adhesive is passed through the adhesive. The engaging member, the receiving body and The light guide unit is connected. The light transmitting and receiving sub-module of the solderless light guiding unit according to claim 1, wherein an engaging space is formed between the shaft tube of the light guiding unit and the protective cover, and the top surface of the engaging member has A U-shaped port can be inserted into the engaging space of the light guide unit.