阅读说明：本技术 一种sff光模块 (SFF optical module ) 是由 路绪刚 于 2019-11-22 设计创作，主要内容包括：本申请提供了一种SFF光模块,包括：底壳、上壳及光电部,底壳与上壳装配在一起形成的光模块腔体容纳固定光电部,尾纤与光电部中的TOSA、ROSA加工为一体,并对接TOSA、ROSA进行信号传输。本申请提供的一种SFF光模块,可以使光电部稳固的容纳于光模块腔体内；尾纤与TOSA、ROSA的对接牢固；底壳、上壳及光电部的组装简单、快捷；且底壳与上壳可以重复使用,节约成本。(The application provides an SFF optical module, comprising: the optical module cavity formed by assembling the bottom shell and the upper shell accommodates and fixes the photoelectric part, and the tail fiber and TOSA and ROSA in the photoelectric part are processed into a whole and are in butt joint with the TOSA and the ROSA for signal transmission. According to the SFF optical module, the photoelectric part can be stably accommodated in the optical module cavity; the butt joint of the tail fiber, the TOSA and the ROSA is firm; the bottom shell, the upper shell and the photoelectric part are simply and quickly assembled; and the bottom shell and the upper shell can be reused, so that the cost is saved.)

1. An SFF optical module comprising: the optical module cavity formed by assembling the bottom shell and the upper shell accommodates and fixes the photoelectric part, the tail fiber is processed with the TOSA and the ROSA in the photoelectric part into a whole and is butted with the TOSA and the ROSA for signal transmission, and the optical fiber coupling device is characterized in that,

the bottom shell is provided with a part of mounting groove at one end of the shell, a lower boss is arranged at the other end of the shell, a lower positioning surface is arranged inside the shell, a long hole and a positioning column are symmetrically arranged on the bottom surface outside the shell, and the lower boss is provided with a lower boss positioning surface and a threaded hole;

the upper shell is provided with a part of mounting grooves at one end of the shell, an upper boss is arranged at the other end of the shell, an upper positioning surface and a marking bulge are arranged inside the shell, a label groove is arranged on the bottom surface outside the shell, the part of the mounting grooves of the upper shell and the part of the mounting grooves of the bottom shell are matched to form a complete mounting groove for clamping and fixing the TOSA and the ROSA, the upper boss is provided with an upper boss positioning surface and a screw hole, the marking bulge is used for marking the company name and the processing date of the bottom shell and the upper shell, and the label groove is used for pasting the label description of the optical;

the photoelectric part includes: the pin-type photoelectric connector comprises a functional circuit board, a TOSA, a ROSA and a pin arraying body, wherein the functional circuit board is provided with pin holes at two sides, one end of the functional circuit board is provided with a welding point, the other end of the functional circuit board is provided with a through hole, the TOSA and the ROSA are provided with pins, the pin arraying body is provided with a pin, an insulating ring and a transition strip, the insulating ring is provided with a pin hole, the transition strip is provided with an insulating ring hole, the pin is inserted into the pin hole of the insulating ring, the insulating ring is inserted into the insulating ring hole in the transition strip to form the pin arraying body, the pin arraying body penetrates into and is fixed in the long strip hole to enable the pin arraying body and the bottom shell to be assembled and fixed into a whole, one end of the pin is inserted into the pin hole in the functional circuit board and welded, the pins of the TOSA and the ROSA are welded on the welding point in the functional circuit board, so that the functional, the photoelectric part is installed and fixed in the optical module cavity, the other end of the rod pin is inserted into a pinhole in the host circuit board and welded after the positioning column is inserted into a positioning hole in the host device for positioning the optical module, so that the pin row body is connected with the functional circuit board and the host circuit board for electric signal transmission, the TOSA converts the electric signal in the functional circuit board into an optical signal and transmits the optical signal to other equipment through a tail fiber, and the ROSA converts the optical signal received by the tail fiber from other equipment into an electric signal and transmits the electric signal to the functional circuit board.

2. The SFF optical module as claimed in claim 1, wherein said optoelectronic section further comprises a pigtail, said pigtail being fixedly connected to said TOSA and ROSA for transmitting optical signals.

3. The SFF optical module as claimed in claim 1, wherein said insulating ring is made of optical glass material, having insulating and environmental-friendly functions, and said transition strip is made of kovar alloy material.

4. The SFF optical module as claimed in claim 3, wherein said transition strip is assembled with said elongated hole by interference fit.

Technical Field

The invention relates to the technical field of optical communication, in particular to an SFF optical module.

Background

The steady development of the global telecommunication industry and the steady growth of broadband users lay a solid foundation for the development of the optical communication industry. With the continuous improvement of the global bandwidth demand and the expansion of the application fields of data centers and security monitoring optical communication industries, the optical fiber broadband access has become the mainstream communication mode. Under the promotion of popularization of terminals such as smart phones and the like and applications such as video and cloud computing, telecom operators continuously invest in building and upgrading mobile broadband networks and optical fiber broadband networks, and the investment scale of optical communication equipment is further enlarged.

The rapid development of the optical communication industry drives the updating of the optical module. Under the market competition environment with increasingly intense optical communication at present, various high-cost optical modules are more and more, the structure is complex, the requirements of the photoelectric part are higher, and heavier economic cost is brought to enterprises and users, so that an optical module with a simple structure and lower cost is needed to meet the requirements of part of enterprises and users. Therefore, there is a need for an Optical module, in which an optoelectronic part can be stably accommodated in an Optical module cavity, and a pigtail is fixedly connected to a TOSA (Transmitting Optical Sub-Assembly) and a ROSA (Receiving Optical Sub-Assembly) in the optoelectronic part for Transmitting and Receiving an Optical signal; the optical module shell and the photoelectric part are simply and quickly assembled; and the cost of the optical module is low.

Disclosure of Invention

The embodiment of the invention aims to provide an optical module with simple structure and low cost, so that a photoelectric part is stably fixed in an optical module cavity, and a tail fiber is in butt joint with a TOSA (transmitter optical subassembly) and a ROSA (receiver optical subassembly) in the photoelectric part for signal transmission.

In order to achieve the above object, an embodiment of the present invention provides an SFF (Small Form Factor) optical module, including: the bottom shell, the upper shell and the photoelectric part are assembled together to form an optical module cavity for accommodating and fixing the photoelectric part, the tail fiber is in butt joint with a TOSA and a ROSA in the photoelectric part for signal transmission,

the bottom shell is provided with a part of mounting groove at one end of the shell, a lower boss is arranged at the other end of the shell, a lower positioning surface is arranged inside the shell, a long hole and a positioning column are symmetrically arranged on the bottom surface outside the shell, and the lower boss is provided with a lower boss positioning surface and a threaded hole;

the upper shell is provided with a part of mounting grooves at one end of the shell, an upper boss is arranged at the other end of the shell, an upper positioning surface and a marking bulge are arranged inside the shell, a label groove is arranged on the bottom surface outside the shell, the part of the mounting grooves of the upper shell and the part of the mounting grooves of the bottom shell are matched to form a complete mounting groove for clamping and fixing the TOSA and the ROSA, the upper boss is provided with an upper boss positioning surface and a screw hole, the marking bulge is used for marking the company name and the processing date of the bottom shell and the upper shell, and the label groove is used for pasting the label description of the optical;

the photoelectric part includes: the pin-type photoelectric connector comprises a functional circuit board, a TOSA, a ROSA and a pin arraying body, wherein the functional circuit board is provided with pin holes at two sides, one end of the functional circuit board is provided with a welding point, the other end of the functional circuit board is provided with a through hole, the TOSA and the ROSA are provided with pins, the pin arraying body is provided with a pin, an insulating ring and a transition strip, the insulating ring is provided with a pin hole, the transition strip is provided with an insulating ring hole, the pin is inserted into the pin hole of the insulating ring, the insulating ring is inserted into the insulating ring hole in the transition strip to form the pin arraying body, the pin arraying body penetrates into and is fixed in the long strip hole to enable the pin arraying body and the bottom shell to be assembled and fixed into a whole, one end of the pin is inserted into the pin hole in the functional circuit board and welded, the pins of the TOSA and the ROSA are welded on the welding point in the functional circuit board, so that the functional, the photoelectric part is installed and fixed in the optical module cavity, the other end of the rod pin is inserted into a pinhole in the host circuit board and welded after the positioning column is inserted into a positioning hole in the host device for positioning the optical module, so that the pin row body is connected with the functional circuit board and the host circuit board for electric signal transmission, the TOSA converts the electric signal in the functional circuit board into an optical signal and transmits the optical signal to other equipment through a tail fiber, and the ROSA converts the optical signal received by the tail fiber from other equipment into an electric signal and transmits the electric signal to the functional circuit board.

In the above SFF optical module, the optoelectronic unit further includes a tail fiber, and the tail fiber is fixedly connected to the TOSA and the ROSA, and is used for transmitting an optical signal.

In the SFF optical module, the insulating ring is made of optical glass, and has insulating and environment-friendly functions, and the transition strip is made of kovar alloy.

In the SFF optical module, the transition strip and the elongated hole are assembled in an interference fit manner.

According to the SFF optical module, the photoelectric part can be stably accommodated in the optical module cavity; the butt joint of the tail fiber, the TOSA and the ROSA is firm; the bottom shell, the upper shell and the photoelectric part are simply and quickly assembled; and the bottom shell and the upper shell can be reused, so that the cost is saved.

Drawings

Fig. 1 is an exploded view of an SFF optical module according to an embodiment of the present disclosure;

fig. 2 is an exploded view of a SFF optical module according to an embodiment of the present disclosure;

FIG. 3 is a first diagram illustrating an assembling effect of an SFF optical module according to an embodiment of the present disclosure;

FIG. 4 is a second diagram illustrating an assembling effect of an SFF optical module according to an embodiment of the present disclosure;

fig. 5 is a third diagram of an assembly effect of an SFF optical module according to an embodiment of the present application (with an upper cover and a tail fiber removed);

fig. 6 is a first schematic view of a bottom case of an SFF optical module according to an embodiment of the present disclosure;

fig. 7 is a schematic view of a bottom case of an SFF optical module according to an embodiment of the present application;

fig. 8 is a first schematic view of an upper case of an SFF optical module according to an embodiment of the present application;

fig. 9 is a schematic diagram of an upper case of an SFF optical module according to an embodiment of the present application;

fig. 10 is an assembly diagram of an optoelectronic part of an SFF optical module according to an embodiment of the present application;

FIG. 11 is a schematic diagram of a circuit board in an optoelectronic portion according to an embodiment of an SFF optical module of the present application;

fig. 12 is a schematic diagram of a pin header in a photoelectric portion according to an embodiment of the SFF optical module of the present application;

FIG. 13 is a schematic diagram of an insulating ring in a row pin body according to an embodiment of the SFF optical module of the present application;

fig. 14 is a schematic diagram of a transition strip in a row needle body according to an embodiment of the SFF optical module of the present application.

The reference numerals are explained below:

100 bottom shell

110 part of the mounting groove 120 is provided with a lower boss 121, a lower boss positioning surface 122, a threaded hole 130, a lower positioning surface 140 and a long hole 150, and the positioning column 160 is provided with a nut groove

200 upper case

210 partially fitting the slot 220, the boss 221, the boss positioning surface 222, the screw hole 230, the positioning surface 240, the label slot of the projection 250

300 photoelectric part

310 functional circuit board 311 pinhole 312 welding point 313 through hole 320TOSA 321 pin 330ROSA 340 row pin 341 bar pin 342 insulating ring 3421 bar pinhole 343 transition bar 3431 insulating ring hole 350 tail fiber

400 screw

Detailed Description

Specific embodiments of the present application will be described in detail below. It should be noted that the embodiments described herein are only for illustration and are not intended to limit the present application.

Fig. 1 and fig. 2 are exploded views of an embodiment of an SFF optical module of the present application, fig. 3 to fig. 5 are assembled effect views of an SFF optical module of the present application, fig. 6 to fig. 9 are schematic views of a bottom shell and an upper shell of an SFF optical module of the present application, fig. 10 is a schematic view of an assembling of an optoelectronic portion of an SFF optical module of the present application, fig. 11 is a schematic view of a functional circuit board of an SFF optical module of the present application, fig. 12 is a schematic view of a row pin in an optoelectronic portion of an SFF optical module of the present application, fig. 13 is a schematic view of an insulating ring in a row pin of an embodiment of an SFF optical module of the present application, and fig. 14 is a schematic view of a transition strip in a row pin of an embodiment of an SFF optical module of.

As shown in fig. 1 to 5, after the screw 400 is inserted into the screw hole 222 of the upper boss 220 and screwed into the screw hole 122 of the lower boss 120, the upper case 200 and the bottom case 100 are assembled into an optical module cavity for receiving and fixing the photoelectric part 300.

Bottom case 100 has a partial mounting groove 110 at one end of the case, a lower boss 120 at the other end of the case, a lower positioning surface 130 inside the case, a long hole 140 and a positioning post 150 symmetrically arranged on the bottom surface of the outside of the case, a lower boss positioning surface 121 and a threaded hole 122 arranged on the lower boss 120, and nut grooves 160 at both ends of the bottom surface of the outside of the case for receiving the nut of screw 400;

the upper shell 200 is provided with a part of mounting grooves 210 at one end of the shell, an upper boss 220 at the other end of the shell, an upper positioning surface 230 and a marking protrusion 240 are arranged inside the shell, a label groove 250 is arranged at the bottom surface outside the shell, part of the mounting grooves 210 of the upper shell 200 and part of the mounting grooves 110 of the bottom shell 100 are matched to form a complete mounting groove for clamping and fixing a TOSA320 and a ROSA330, the upper boss 220 is provided with an upper boss positioning surface 221 and a screw hole 222, the marking protrusion 240 is used for marking the company name and the processing date of the bottom shell 100 and the upper shell 200, and the label groove 250 is used for pasting the label description;

the photovoltaic unit 300 includes: the functional circuit board 310 is provided with pinholes 311 on two sides, a welding point 312 on one end, a through hole 313 on the other end, pins 321 on the TOSA320 and the ROSA330, a pin bank 340 provided with pins 341, an insulating ring 342 and a transition bar 343, the insulating ring 342 provided with pin holes 3421, the transition bar 343 provided with insulating ring holes 3431, the pins 341 inserted into the pin holes 3421 of the insulating ring 342, the insulating ring 342 inserted into the insulating ring holes 3431 in the transition bar 343 to form the pin bank 340, the pin bank 340 inserted into and fixed in the long bar holes 140, the transition bar 343 and the long bar holes 140 assembled in an interference fit to assemble the pin bank 340 and the bottom case 100 into a whole, the TOSA320 and the ROSA330 welded on the pins 321 of the pins 312, one end of the pin 341 inserted into and welded in the pinholes 311, so that the pin bank 310, the TOSA320, the ROSA330 and the pin bank 340 are welded into an integral photoelectric welding part 300, and is installed in the bottom shell 100, the upper boss positioning surface 221, the upper positioning surface 230 are matched with the lower boss positioning surface 121, the lower positioning surface 130 to clamp and fix the functional circuit board 310, part of the installation groove 110 of the bottom shell 100 is matched with part of the installation groove 210 of the upper shell 200 to form a complete installation groove to clamp and fix the TOSA320 and the ROSA330, therefore, the photoelectric part 300 is installed and fixed in the optical module cavity, the through hole 313 of the functional circuit board 310 is used for passing through the screw 400, the other end of the pin 341 is inserted into the positioning hole of the host device for positioning the optical module at the positioning column 150, and then is inserted into the pin hole of the host circuit board and welded, so that the pin gang 340 is connected with the functional circuit board 310 and the host circuit board for electric signal transmission, the TOSA320 converts the electric signal in the functional circuit board 310 into an optical signal and transmits the optical signal to other equipment through the tail fiber 350, and the ROSA330 converts the optical signal received by the tail fiber 350 from other equipment into an electric signal and transmits the electric.

The optical electronic component 300 further includes a pigtail 350, and the pigtail 350 is fixedly connected to the TOSA320 and the ROSA330 for transmitting optical signals.

The insulating ring 342 is made of optical glass, and is made of DM-308 glass, so that the insulating ring has insulating and environment-friendly functions; the transition strip 343 is made of kovar alloy, specifically 4J29, and has a linear expansion coefficient similar to that of DM-308 glass, and good low-temperature structural stability.

The foregoing is considered as illustrative and exemplary only and is not intended to be limiting of the invention, and it is to be understood that the terminology used is intended to be in the nature of words of description and illustration, rather than of limitation. As the present application may be embodied in several forms without departing from the spirit or essential characteristics thereof, it should also be understood that the above-described embodiments are not limited by any of the details of the foregoing description, but rather should be construed broadly within its spirit and scope as defined in the appended claims, and therefore all changes and modifications that fall within the metes and bounds of the claims, or equivalence of such metes and bounds are therefore intended to be embraced by the appended claims.