阅读说明：本技术 光收发器及其光学次模块 (Optical transceiver and optical subassembly thereof ) 是由 廖廷彰 王怡茹 赖明佑 于 2019-03-18 设计创作，主要内容包括：一种光学次模块,包含一承接座、一套管及一套管固定件。套管及套管固定件连接于承接座。套管固定件包含相连的一固定部及一止挡部。固定部固定于承接座,且止挡部接触套管。(An optical subassembly comprises a bearing seat, a sleeve and a sleeve fixing piece. The sleeve and the sleeve fixing piece are connected to the bearing seat. The sleeve fixing piece comprises a fixing part and a stopping part which are connected. The fixing part is fixed on the bearing seat, and the stopping part is contacted with the sleeve.)

1. An optical subassembly, comprising:

a bearing seat;

a sleeve connected to the bearing seat; and

a sleeve fixing piece connected with the bearing seat, the sleeve fixing piece comprises a fixing part and a stopping part which are connected,

the fixing part is fixed on the bearing seat, and the stopping part is contacted with the sleeve.

2. The optical subassembly of claim 1, wherein the sleeve fixing member further comprises a connecting portion, the fixing portion and the stopping portion are respectively connected to two opposite ends of the connecting portion, and the connecting portion covers a portion of an annular outer surface of the supporting base.

3. An optical subassembly as in claim 2 wherein a region of the annular outer surface is exposed from an opening in the connecting portion of the ferrule holder.

4. The optical subassembly of claim 3, wherein the connecting portion of the ferrule holder extends along the annular outer surface of the receptacle to have a first length, the region of the annular outer surface exposed from the opening of the connecting portion has a second length, and the first length is greater than or equal to the second length.

5. An optical subassembly as in claim 4 wherein the first segment length is at least three times greater than the second segment length.

6. The optical subassembly of claim 1, wherein the fixing portion of the ferrule holder comprises a claw structure fixed to the receptacle and extending into a recess of the receptacle.

7. The optical subassembly of claim 6, wherein the receptacle comprises a shaft portion and an assembling portion, the assembling portion is disposed on the shaft portion, the shaft portion and the assembling portion together form the hollow slot, and the claw structure of the fixing portion is fixed to the assembling portion.

8. The optical subassembly of claim 7, wherein the sleeve fixing member further comprises a connecting portion, the fixing portion and the stopping portion are respectively connected to two opposite ends of the connecting portion, and the connecting portion is sleeved on the assembling portion.

9. The optical subassembly of claim 1, wherein the stop portion of the sleeve fixing member comprises a claw structure, and a claw tip of the claw structure contacts the sleeve.

10. An optical transceiver comprising the optical sub-assembly of claim 1.

Technical Field

The present invention relates to an optical communication device, and more particularly, to an optical transceiver.

Background

Optical transceivers are commonly installed in modern high-speed communication networks as electronic communication devices. In order to make the design of the electronic communication equipment more flexible and reduce the maintenance burden, the optical transceiver is inserted into a corresponding cage (cage) in a pluggable manner, and the cage is disposed in the communication equipment. In order to define the electrical-to-mechanical interface (e.g., electrical-to-mechanical interface) of the optical transceiver and the corresponding housing, various specifications such as XFP (10Gigabit Small Form Factor) for 10GB/s communication rates, QSFP (Quad Small Form-Factor) or other Form factors for different communication rates have been proposed and implemented.

In general, an optical subassembly in an optical transceiver includes a housing (package), a Receptacle (Receptacle), and a Ferrule (Ferrule) for forming a fiber optic cable and assembly. The sleeve is adhered to the bearing seat by adhesive.

However, when the yield of the optical sub-assembly is detected to be poor in the coupling test (coupling test), the receptacle and the sleeve fixed to each other by the adhesive cannot be separated without damaging the optical fiber cable and the assembly. Therefore, only the socket and the sleeve which do not pass the coupling test can be scrapped together, and the rework cost of the optical sub-module is further increased.

Disclosure of Invention

The invention provides an optical transceiver, which is beneficial to solving the problem that a bearing seat and a sleeve cannot be reassembled and replaced when the yield of an optical submodule of the optical transceiver is poor.

An optical subassembly according to an aspect of the present invention includes a receptacle, a ferrule, and a ferrule holder. The sleeve and the sleeve fixing piece are connected to the bearing seat. The sleeve fixing piece comprises a fixing part and a stopping part which are mutually connected. The fixing part is fixed on the bearing seat, and the stopping part is contacted with the sleeve.

An optical transceiver according to another aspect of the present invention includes the optical subassembly.

According to the optical transceiver and the optical submodule disclosed by the invention, the fixing part of the sleeve fixing piece is fixed on the bearing seat, and the stop part of the sleeve fixing piece is contacted with the sleeve. Thus, the cannula is retained by the removable cannula holder, rather than by the adhesive used in conventional products. The sleeve is limited by the sleeve fixing piece, so that the sleeve can be easily disassembled when the sleeve cannot pass the corresponding coupling test, and a user can align the sleeve with the bearing seat again on the premise of not damaging the optical assembly of the optical submodule.

The foregoing description of the present disclosure and the following detailed description are presented to illustrate and explain the principles and spirit of the invention and to provide further explanation of the invention as claimed.

Description of the drawings:

fig. 1 is a perspective view of an optical transceiver according to an embodiment of the present invention.

Fig. 2 is a perspective view of an optical subassembly in the optical transceiver of fig. 1.

Fig. 3 is an exploded view of the optical subassembly of fig. 2.

Fig. 4 is a side view of the optical subassembly of fig. 2.

Fig. 5 is a front view of the optical subassembly of fig. 2.

Fig. 6 is a front view of an optical subassembly according to another embodiment of the invention.

Description of the symbols:

1 optical sub-module

2 casing

10 outer casing

20 bearing seat

210 shaft part

211 convex part

220 assembling part

221 annular outer surface

230 empty groove

30 casing

40 casing pipe fixing piece

410 fixed part

411. 421 claw hook structure

420 stop part

4211 claw tip

430 connecting part

431 opening

Axis A

D circumferential direction

Length of L1 first section

Length of second segment L2

Detailed Description

The detailed features and advantages of the present invention are described in detail in the following embodiments, which are sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by anyone skilled in the art according to the disclosure, claims and drawings of the present specification. The following examples further illustrate aspects of the invention in detail, but are not intended to limit the scope of the invention in any way.

According to an embodiment of the present invention, the optical subassembly includes a receptacle, a ferrule and a ferrule holder. Please refer to fig. 1 to 3. Fig. 1 is a perspective view of an optical transceiver according to an embodiment of the present invention. Fig. 2 is a perspective view of an optical subassembly in the optical transceiver of fig. 1. Fig. 3 is an exploded view of the optical subassembly of fig. 2. In this embodiment, the optical transceiver is pluggable into a cage (not shown), and includes an optical subassembly 1 and a housing 2 for accommodating the optical subassembly 1. The optical subassembly 1 includes a housing 10, at least one socket 20, at least one ferrule 30 and at least one ferrule holder 40. The Optical Sub-module 1 is a transmit Optical Sub-Assembly (TOSA) or a Receiver Optical Sub-Assembly (ROSA) in an Optical transceiver. It should be noted that the scope of the present invention is not limited by the number of the socket 20, the sleeve 30 and the sleeve fixing member 40 shown in fig. 1.

The housing 10 is, for example, a ceramic cap (ceramic cap) and accommodates a bonding wire (bonding wire), a connector (pins), an optical lens, and an integrated circuit chip. The socket 20 is connected to the housing 10. The sleeve 30 is connected to the socket 20. The sleeve fixing member 40 is, for example, an arc-shaped elastic metal sheet. The sleeve fixing member 40 is disposed around the socket 20, and the sleeve fixing member 40 includes a fixing portion 410 and a stopping portion 420 connected to each other. The fixing portion 410 is fixed to the socket 20, and the stopping portion 420 contacts the sleeve 30.

According to an embodiment of the present invention, the socket includes a shaft portion and an assembling portion. Please refer to fig. 4-4, which are side views of the optical subassembly shown in fig. 2. As shown in fig. 3 and 4, the socket 20 includes a shaft portion 210 and an assembling portion 220. The shaft portion 210 is connected to the housing 10 via a flange portion 211 thereof. The assembling portion 220 is disposed on the shaft portion 210. A hollow 230 is formed between the flange 211 of the shaft 210 and the assembling portion 220. The fixing portion 410 of the sleeve fixing member 40 includes a claw hook structure 411, and the claw hook structure 411 extends into the empty groove 230 of the bearing seat 20, so that the fixing portion 410 can be fixed and hooked on the assembling portion 220.

According to an embodiment of the present invention, the sleeve fixing member further includes a connecting portion. As shown in fig. 3 and 4, the cannula fixing member 40 includes a connecting portion 430. The fixing portion 410 and the stopping portion 420 are respectively connected to two opposite ends of the connecting portion 430. The connecting portion 430 extends along the axis a of the socket 20 (as shown in fig. 3), and the assembling portion 220 of the socket 20 is sleeved with the connecting portion 430.

According to an embodiment of the present invention, the stopping portion of the sleeve fixing member includes a claw hook structure. As shown in fig. 3 and 4, the stopping portion 420 of the sleeve fixing member 40 includes a claw structure 421. A prong 4211 of the claw structure 421 contacts the sleeve 30 for restricting the movement of the sleeve 30. The claw hook structure 421 is beneficial to improving the structural strength of the stopping portion 420. The protection scope of the present invention is not limited by the shape of the hook structure 421 in the drawings. In some embodiments, the end of the claw hook structure 421 is bent to form an arc angle, and the sleeve is contacted by the arc angle.

According to an embodiment of the present invention, the opening of the connecting portion of the sleeve fixing member exposes the annular outer surface of the socket. Referring to fig. 5, fig. 5 is a front view of the optical subassembly of fig. 2. As shown in fig. 3 and 5, the connecting portion 430 of the sleeve fixing member 40 covers a portion of an annular outer surface 221 of the assembling portion 220 of the socket 20, and the cross-sectional shape of the connecting portion 430 is a partial ring shape. An area (area) of the annular outer surface 221 is exposed from an opening 431 of the connection portion 430. Therefore, it is convenient for the user to easily mount the sleeve fixing member 40 on the socket 20 and to detach the sleeve fixing member 40 from the socket 20 by bending the sleeve fixing member 40.

According to an embodiment of the invention, the connecting portion of the sleeve retainer extends along the annular outer surface of the socket. As shown in fig. 3 and 5, the connecting portion 430 of the sleeve fastener 40 extends along the annular outer surface 221 of the assembling portion 220 of the socket 20 and has a first length L1 in a circumferential direction D of the socket 20. The region of the annular outer surface 221 exposed from the opening 431 of the connecting portion 430 has a second length L2 in the circumferential direction D, and the first length L1 is greater than the second length L2. Specifically, the first segment length L1 is at least three times greater than the second segment length L2. Therefore, the sleeve fixing member 40 can be firmly engaged with the socket 20, which helps to prevent any unpredictable misalignment (misaligment) between the sleeve 30 and the socket 20.

Embodiments of the present invention are not limited to the above-described relationship between the first segment length L1 and the second segment length L2. Fig. 6 is a front view of an optical subassembly according to another embodiment of the invention. In this embodiment, the first length L1 of the connecting portion 430 of the sleeve mount 40 is equal to the second length L2 of the region of the annular outer surface 221 exposed through the opening 431.

According to the optical transceiver and the optical sub-module thereof disclosed by the invention, the fixing part of the sleeve fixing piece is fixed on the bearing seat, and the stop part of the sleeve fixing piece is contacted with the sleeve. Thus, the cannula is retained by the removable cannula holder, rather than by the adhesive used in conventional products. The sleeve is limited by the sleeve fixing piece, so that the sleeve can be easily disassembled when the sleeve cannot pass the corresponding coupling test, and a user can align the sleeve with the bearing seat again on the premise of not damaging the optical assembly of the optical submodule.