CN220626713U - Light emitting device and light module - Google Patents

Abstract

The utility model relates to the technical field of optical communication, and provides a light emitting device, which comprises a laser component capable of emitting multiple paths of light beams, an optical isolator, two TFF devices arranged side by side, wherein the two TFF devices are symmetrically arranged, a prism is further arranged between the TFF devices and the laser component, at least part of the light beams emitted by the laser component are emitted to the prism after passing through the two TFF devices, one path of light beams are emitted by the prism, the optical isolator is arranged on one side, far away from the prism, of the TFF devices, and the light beams emitted by the prism are emitted into the optical isolator. The light module comprises a light receiving assembly and the light emitting assembly, and the light receiving assembly and the light emitting assembly are arranged side by side. The prism is designed on the side of the laser, so that the space on the side of the isolator can be not occupied, and the whole space structure is more compact.

Description

Light emitting device and light module

Technical Field

The utility model relates to the technical field of optical communication, in particular to a light emitting device and an optical module.

Background

TFF (Z-block + filter) is a mature channel 4-channel device currently in mass production. Whereas existing 800G and 1.6T optical devices commonly employ 8-channel optical schemes, such as 8X100G or 8X200G schemes.

The prism and the optical isolator of the existing light emitting device are both arranged at the same place, and are usually arranged at one side of the Z-Block module far away from the laser, for example, in the patent application with publication number CN110941050a, which can cause the stacking of devices at the side of the Z-Block module, so that the space structure of the optical module is not compact enough.

Disclosure of Invention

The utility model aims to provide a light emitting device and a light module, which can at least solve part of defects in the prior art.

In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions: the utility model provides a light emitting device, includes the laser subassembly that can send multichannel light beam, still includes optical isolator and two TFF devices that set up side by side, two the TFF device symmetry sets up, the TFF device with still be equipped with the prism between the laser subassembly, the at least partial light beam that laser subassembly sent is two after the TFF device is penetrated to the prism, by the prism outgoing light beam of one way again, optical isolator establishes the TFF device is kept away from one side of prism, the light beam of prism outgoing is penetrated optical isolator.

Further, the laser assembly comprises eight lasers which are arranged in a straight line, and the first to fourth lasers are multiplexed into one beam by one of the TFF devices and are emitted to the prism, the fifth to eighth lasers are multiplexed into one beam by the other TFF device, and the fourth laser emits one beam after being emitted to the prism.

Further, each of the lasers is disposed on a ceramic heat sink.

Further, the optical isolator also comprises a converging lens for converging the light beams emitted by the optical isolator.

Further, the light beams converged by the converging lens are injected into the optical fiber.

Further, a collimating lens is included for collimating the beam of light emitted by the laser assembly.

Further, the prism is integrated with a reflective surface and a transmissive surface.

Further, each of the TFF devices includes a Z-blcok and four filters.

The embodiment of the utility model provides another technical scheme that: the optical module comprises a light receiving assembly and the light emitting assembly, wherein the light receiving assembly and the light emitting assembly are arranged side by side.

Further, the light receiving assembly is identical in structure to the light emitting assembly.

Compared with the prior art, the utility model has the beneficial effects that: the prism is designed on the side of the laser, so that the space on the side of the isolator can be not occupied, and the whole space structure is more compact.

Drawings

Fig. 1 is a schematic structural diagram of a light emitting device according to an embodiment of the present utility model;

in the reference numerals: 1-a laser assembly; a 10-laser; a 2-TFF device; 20-Z-blcok; 21-an optical filter; 3-prisms; a 4-optical isolator; 5-a ceramic heat sink; 6-converging lens; 7-optical fiber; 8-collimator lens.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, an embodiment of the present utility model provides a light emitting device, which includes a laser component 1 capable of emitting multiple beams, and further includes an optical isolator 4 and two TFF devices 2 arranged side by side, where the two TFF devices 2 are symmetrically arranged, a prism 3 is further disposed between the TFF devices 2 and the laser component 1, at least part of the beams emitted by the laser component 1 are emitted to the prism 3 after passing through the two TFF devices 2, and then one path of beams is emitted from the prism 3, the optical isolator 4 is disposed on a side of the TFF devices 2 away from the prism 3, and the beams emitted from the prism 3 are emitted into the optical isolator 4. In this embodiment, the prism 3 is designed on the side of the laser 10, so that the space on the isolator side is not occupied, and the whole space structure is more compact. Specifically, in the prior art, the optical isolator 4 and the prism 3 are designed together, which can cause the stacking of devices to cause the insufficient compactness of the space structure of the optical module, and in this embodiment, the optical isolator 4 and the prism 3 are skillfully separated and respectively arranged on two sides of the TFF device 2, so that the prism 3 will not occupy the space on the side of the optical isolator 4 of the TFF device 2, thereby facilitating the space design of the light emitting device.

For further elaborating the above-mentioned laser assembly 1, please refer to fig. 1, the laser assembly 1 includes eight lasers 10 arranged in a straight line, from a first laser 10 to an eighth laser 10, where the first laser 10 to the fourth laser 10 are multiplexed into one beam by one of the TFF devices 2 and are emitted to the prism 3, the prism 3 emits the one beam, and the fifth laser 10 to the eighth laser 10 are multiplexed into one beam by the other TFF device 2, and the fourth laser 10 emits one beam after being emitted to the prism 3. In this embodiment, as shown in fig. 1, from top to bottom, the first laser 10, the second laser 10, the third laser 10, the fourth laser 10, the fifth laser 10, the sixth laser 10, the seventh laser 10, and the eighth laser 10 are provided, and the prism 3 is provided at the fourth laser 10, so that all the light beams can be finally combined into one light beam at this point in cooperation with the two TFF devices 2. The light beams emitted by the first laser 10 to the fourth laser 10 are combined into one path through the upper TFF device 2 to be emitted to the prism 3, then reflected through the prism 3, the light beams emitted by the fifth laser 10 to the eighth laser 10 are combined and then emitted to the prism 3, then reflected through the prism 3, the light beams emitted by the fourth laser 10 are transmitted through the prism 3, and finally are combined with the two paths of emitted light to be emitted to the optical isolator 4.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, each of the lasers 10 is disposed on the ceramic heat sink 5. In this embodiment, the lasers 10 are all disposed on the ceramic heat sink 5 to facilitate heat dissipation of the lasers 10.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, the light emitting device further includes a converging lens 6 for converging the light beam emitted from the optical isolator 4. In this embodiment, the light beam processed by the optical isolator 4 is converged by the converging lens 6 and then emitted to the optical fiber 7.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, the light emitting device further includes a collimating lens 8 for collimating the light beam emitted by the laser component 1. In this embodiment, the light beam emitted by the laser 10 is collimated by the collimator lens 8 and then enters the TFF device 2. There are eight collimator lenses 8, one for each laser 10.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, the prism 3 is integrated with a reflective surface and a transmissive surface. In the present embodiment, the prism 3 is integrated with a reflecting surface and a transmitting surface, and is capable of reflecting a light beam as well as transmitting a light beam.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, each TFF device 2 includes a Z-blcok20 and four optical filters 21. In this embodiment, the TFF device 2 is thinned, and is composed of a Z-blcok20 and four optical filters 21, where the four optical filters 21 correspond to four paths of light, and after the four paths of light enter the Z-blcok20 from the four optical filters 21, the four paths of light are multiplexed into one path of light by the Z-blcok20, and the two Z-blcok20 are disposed in close proximity, so that the light outlet is disposed in close proximity, which is convenient for the setting of subsequent devices.

Referring to fig. 1, an embodiment of the present utility model provides an optical module, which includes an optical receiving assembly and the optical transmitting assembly, where the optical receiving assembly and the optical transmitting assembly are arranged side by side. In this embodiment, the prism 3 is designed on the side of the laser 10, so that the space on the isolator side is not occupied, and the whole space structure is more compact. Specifically, in the prior art, the optical isolator 4 and the prism 3 are designed together, which can cause the stacking of devices to cause the insufficient compactness of the space structure of the optical module, and in this embodiment, the optical isolator 4 and the prism 3 are skillfully separated and respectively arranged on two sides of the TFF device 2, so that the prism 3 will not occupy the space on the side of the optical isolator 4 of the TFF device 2, thereby facilitating the space design of the light emitting device.

As an optimization scheme of the embodiment of the present utility model, referring to fig. 1, the light receiving component and the light emitting component have the same structure. In this embodiment, the optical isolator 4 is omitted, and the optical receiving assembly may be identical to the optical transmitting assembly in structure, so that the substrate of the optical receiving assembly and the substrate of the optical transmitting assembly may be designed to be smaller, which is beneficial to the application of the internal space of the optical module and the miniaturization of the optical module.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A light emitting device comprising a laser assembly capable of emitting multiple light beams, the light emitting device comprising: the optical isolator is arranged on one side of the TFF device, which is far away from the prism, and the light beam emitted by the prism is emitted into the optical isolator.

2. The light emitting device of claim 1, wherein: the laser assembly comprises eight lasers which are distributed in a straight line, and the first to fourth lasers are multiplexed into one beam by one TFF device and are emitted to the prism, the fifth to eighth lasers are multiplexed into one beam by the other TFF device, and the fourth laser emits one beam after being emitted to the prism.

3. The light emitting device of claim 2, wherein: each laser is arranged on the ceramic heat sink.

4. The light emitting device of claim 1, wherein: the optical isolator also comprises a converging lens for converging the light beams emitted by the optical isolator.

5. The light emitting device according to claim 4, wherein: the light beams converged by the converging lens are emitted into the optical fiber.

6. The light emitting device of claim 1, wherein: and a collimating lens for collimating the light beam emitted by the laser assembly.

7. The light emitting device of claim 1, wherein: the prism is integrated with a reflective surface and a transmissive surface.

8. The light emitting device of claim 1, wherein: each of the TFF devices includes a Z-blcok and four filters.

9. An optical module comprising an optical receiving assembly, characterized in that: further comprising a light emitting assembly according to any of claims 1-8, said light receiving assembly and said light emitting assembly being arranged side by side.

10. An optical module as recited in claim 9, wherein: the light receiving assembly has the same structure as the light emitting assembly.