CN217879739U

CN217879739U - TOSA structure of TO-CAN encapsulation

Info

Publication number: CN217879739U
Application number: CN202221946345.2U
Authority: CN
Inventors: 黄杰
Original assignee: Xunyun Electronic Technology Zhongshan Co ltd
Current assignee: Xunyun Electronic Technology Zhongshan Co ltd
Priority date: 2022-07-26
Filing date: 2022-07-26
Publication date: 2022-11-22
Anticipated expiration: 2032-07-26

Abstract

The utility model relates TO an optical communication technical field discloses a TOSA structure of TO-CAN encapsulation, and it includes tube socket, pin, laser emitter, pipe cap, adapter and tail optical fiber, and the pipe cap lid fits the front end of tube socket TO be limited between with the tube socket and be formed with the holding chamber, and laser emitter is located the holding intracavity, and the rear end of adapter is connected with the front end of pipe cap, and the tail optical fiber is installed in the front end of adapter; the laser emitting device comprises a substrate, a laser and an optical lens assembly, wherein the laser and the optical lens assembly are both arranged on the front side surface of the substrate, the rear side of the substrate is attached to the front side of the tube seat, and the pins penetrate through the rear side of the tube seat and are electrically connected with the substrate. The utility model discloses a TOSA structure carries out the pre-assembling with main components and parts on the base plate, directly pastes dress to the tube socket as a whole component with the laser emission device who assembles again to reduce the equipment degree of difficulty of TOSA structure, improve the production efficiency of product.

Description

TOSA structure of TO-CAN encapsulation

Technical Field

The utility model relates TO an optical communication technical field especially relates TO a TOSA structure of TO-CAN encapsulation.

Background

In the optical fiber communication technology, a TOSA (transmitter optical Subassembly) is an optical transmitter module for converting an electrical signal into an optical signal, and a TO-CAN package is a common process packaging method for the optical transmitter module, and is widely applied TO optical fiber communication and optical fiber sensing. The TOSA structure packaged by the TO-CAN technology is simple TO manufacture, is suitable for large-scale production modes, and has the characteristics of small volume, low loss, long service life and the like.

Patent CN214335303U discloses an EMLTOSA device packaged by a coaxial TO-CAN process, and the TOSA structure packaged by this process is TO mount components on a tube seat one by one during manufacturing, which is high in operation difficulty, low in production efficiency, and not beneficial TO batch manufacturing of products.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is TO provide a TOSA structure of TO-CAN encapsulation carries out the pre-assembling with each components and parts, reduces the equipment degree of difficulty TO improve production efficiency.

In order TO achieve the above object, the utility model provides a TOSA structure of TO-CAN encapsulation, it includes tube socket, pin, laser emission device, cap, adapter and tail optical fiber, the cap lid fit the front end of tube socket, and with inject between the tube socket and be formed with the holding chamber, the laser emission device is located the holding intracavity, the rear end of adapter with the front end of cap is connected, the tail optical fiber install in the front end of adapter; the laser emitting device comprises a substrate, a laser used for emitting optical signals and an optical lens assembly used for transmitting the optical signals to the adapter, wherein the laser and the optical lens assembly are arranged on the front side surface of the substrate, the rear side of the substrate is attached to the front side of the tube seat, and the pins penetrate through the rear side of the tube seat and are electrically connected with the substrate.

Optionally, the laser emitting device includes a backlight detection chip, and the backlight detection chip and the optical lens assembly are respectively disposed on two sides of the laser.

Optionally, the optical lens assembly includes a reflector and a lens, and the lens is mounted at a front end of the reflector.

Optionally, the accommodating device further comprises an isolator and a glass lens, and the isolator and the glass lens are installed in the accommodating cavity.

Optionally, the glass lens is disposed at a front end of the lens, and the isolator is disposed on the glass lens.

Optionally, still include the adjustable ring, the adjustable ring install in the leading flank of cap, just the adjustable ring cover is located the periphery of adapter.

Optionally, the adapter is connected to the adjusting ring by welding.

Optionally, the laser is a DFB laser.

Optionally, the substrate is a ceramic substrate.

Optionally, the tube cap and the tube seat are limited by airtight packaging to form the accommodating cavity.

The embodiment of the utility model provides a TOSA structure of TO-CAN encapsulation compares with prior art, and its beneficial effect lies in:

the utility model discloses TOSA structure of TO-CAN encapsulation constitutes laser emitter TO laser instrument, optics lens unit mount earlier on the base plate, then pastes the dress TO laser emitter on the tube socket, recycles airtight packaging technology and constitutes TO-CAN packaging structure with the tube socket that the pipe cap pasted the dress with the completion, assembles TO-CAN packaging structure and adapter into the TOSA structure at last. The utility model discloses a TOSA structure carries out the pre-assembling with main components and parts on the base plate, directly pastes dress to the tube socket as a whole component with the laser emission device who assembles again to reduce the equipment degree of difficulty of TOSA structure, improve the production efficiency of product.

Drawings

FIG. 1 is a schematic cross-sectional view of a TOSA structure of a TO-CAN package according TO an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a laser emitting device according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of the TOSA of the TO-CAN package of the present invention.

In the figure, 1, tube seat; 2. a pin; 3. a laser emitting device; 31. a substrate; 32. a laser; 33. an optical lens assembly; 331. a mirror; 332. a lens; 34. a backlight detection chip; 4. a pipe cap; 5. an adapter; 6. tail fibers; 7. an accommodating cavity; 8. an isolator; 9. a glass lens; 10. an adjustment ring.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be noted that the face facing the front of the human body is defined as "front face", and the face facing the back of the human body is defined as "back face". The terms "upper", "lower", "front", "rear", "inner", "outer", etc. used in the present invention are used for indicating the positional relationship based on the positional relationship shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices and elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

As shown in fig. 1 TO 3, the TOSA structure of the TO-CAN package of the preferred embodiment of the present invention includes a tube socket 1, a pin 2, a laser emitting device 3, a cap 4, an adapter 5 and a tail fiber 6, wherein the cap 4 covers a front end of the tube socket 1 and defines a receiving cavity 7 with the tube socket 1, the laser emitting device 3 is located in the receiving cavity 7, a rear end of the adapter 5 is connected with a front end of the cap 4, and the tail fiber 6 is mounted at a front end of the adapter 5; the laser emitting device 3 comprises a substrate 31, a laser 32 for emitting optical signals, and an optical lens assembly 33 for transmitting the optical signals to the adapter 5, wherein the laser 32 and the optical lens assembly 33 are both mounted on the front side of the substrate 31, the rear side of the substrate 31 is attached to the front side of the tube seat 1, and the leads 2 are mounted on the rear side of the tube seat 1 and electrically connected with the substrate 31.

Based on the above technical scheme, in the present embodiment, when the TOSA structure is assembled, the laser 32 and the optical lens assembly 33 are pre-mounted on the substrate 31 TO form the laser emitting device 3, then the laser emitting device 3 is mounted on the tube seat 1, then the tube cap 4 and the mounted tube seat 1 are formed into the TO-CAN package structure by using the airtight packaging technology, and finally the TO-CAN package structure and the adapter 5 are assembled into the TOSA structure. The utility model discloses a TOSA structure carries out the pre-assembling with main components and parts on base plate 31, and the laser emission device 3 that will assemble again directly pastes dress to tube socket 1 as a whole component to reduce the equipment degree of difficulty of TOSA structure, improve the production efficiency of product.

Further, the laser emitting device includes a backlight detection chip 34, the backlight detection chip 34 and the optical lens assembly 33 are respectively disposed on two sides of the laser 32, and in this embodiment, the backlight detection chip 34 and the laser 32 are connected to the substrate 31 in a gold wire bonding manner, so as to monitor whether the laser 32 works normally.

Further, in this embodiment, the optical lens assembly 33 includes a reflecting mirror 331 and a lens 332, the lens 332 is installed at the front end of the reflecting mirror 331, the laser 32 emits a light signal parallel to the substrate 31, the parallel light is reflected by the reflecting mirror 331 and then enters the lens 332 for focusing, and the focused light is converged to the adapter 5.

Further, this embodiment still includes isolator 8 and glass lens 9, isolator 8 with glass lens 9 is located in the holding chamber 7, glass lens 9 is located lens 332's front end guarantees isolator 8 is difficult for droing, prevents that the reverberation from influencing system's stability, and the connection reliability is higher.

Furthermore, the present embodiment further includes an adjusting ring 10, the adjusting ring 10 is attached to the front side surface of the cap 4, and the adjusting ring 10 is sleeved on the outer periphery of the adapter 5. Specifically, the length of the adapter 5 is adjusted by adjusting the height and then welding the connection before assembling the adjusting ring 10 and the adapter 5.

Preferably, the laser 32 in this embodiment is a DFB laser, which is also called a distributed feedback laser, and belongs to a side-emitting semiconductor laser, and has good selectivity to wavelength and good wavelength stability.

More preferably, the substrate 31 in this embodiment is a ceramic substrate, which is made of a hard material, has good heat dissipation performance and a low thermal expansion coefficient, and the ceramic circuit board electrically bonds the chip and other components together by means of gold wire bonding, so that the bonding force is strong and the reliability is high.

More specifically, the cap 4 and the socket 1 are limited to form the accommodating cavity 7 by an airtight packaging technology, so that moisture intrusion around the packaging process is eliminated, a good packaging effect is obtained, and the product reliability is improved.

The utility model discloses a working process does: the method comprises the steps of mounting a laser and an optical lens assembly on a substrate in advance TO form a laser emitting device, then mounting the laser emitting device on a tube seat, forming a TO-CAN packaging structure by using an airtight packaging technology and the tube seat which is mounted with the tube cap, and finally assembling the TO-CAN packaging structure and an adapter into a TOSA structure.

TO sum up, the embodiment of the utility model provides a TOSA structure of TO-CAN encapsulation carries out the pre-assembling with main components and parts on the base plate, and the laser emission device who will assemble again directly pastes dress TO the tube socket as a whole component on TO reduce the equipment degree of difficulty of TOSA structure, improve the production efficiency of product.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.

Claims

1. A TOSA structure of a TO-CAN package, comprising: the laser emitting device is positioned in the accommodating cavity, the rear end of the adapter is connected with the front end of the pipe cap, and the tail fiber is arranged at the front end of the adapter; the laser emitting device comprises a substrate, a laser used for emitting optical signals and an optical lens assembly used for transmitting the optical signals to the adapter, wherein the laser and the optical lens assembly are arranged on the front side surface of the substrate, the rear side of the substrate is attached to the front side of the tube seat, and the pins penetrate through the rear side of the tube seat and are electrically connected with the substrate.

2. The TOSA structure of the TO-CAN package of claim 1, wherein: the laser emitting device comprises a backlight detection chip, and the backlight detection chip and the optical lens assembly are respectively arranged on two sides of the laser.

3. The TOSA structure of the TO-CAN package of claim 1, wherein: the optical lens assembly comprises a reflector and a lens, and the lens is arranged at the front end of the reflector.

4. The TOSA structure of the TO-CAN package of claim 3, wherein: the glass lens and the isolator are arranged in the accommodating cavity.

5. The TOSA structure of the TO-CAN package of claim 4, wherein: the glass lens is arranged at the front end of the lens, and the isolator is arranged on the glass lens.

6. The TOSA structure of the TO-CAN package of claim 1, wherein: still include the adjustable ring, the adjustable ring install in the leading flank of pipe cap, just the adjustable ring cover is located the periphery of adapter.

7. The TOSA structure of the TO-CAN package of claim 6, wherein: the adapter is connected with the adjusting ring by welding.

8. The TOSA structure of the TO-CAN package of claim 1, wherein: the laser is a DFB laser.

9. The TOSA structure of the TO-CAN package of claim 1, wherein: the substrate is a ceramic substrate.

10. The TOSA structure of the TO-CAN package of any one of claims 1 TO 9, wherein: the tube cap and the tube seat are limited through airtight packaging to form the accommodating cavity.