CN210431438U

CN210431438U - Light emitting assembly and small-sized packaged hot-pluggable optical module with same

Info

Publication number: CN210431438U
Application number: CN201922156166.3U
Authority: CN
Inventors: 李明东
Original assignee: Hunan Hongxin Communication Technology Co Ltd
Current assignee: Hunan Hongxin Communication Technology Co Ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-04-28
Anticipated expiration: 2029-12-05

Abstract

The utility model discloses a light emission component, including the shell and accept in laser instrument and optical member in the shell, the laser instrument set up in shell length direction's one end, the casing is kept away from the one end of laser instrument is provided with the light-emitting window, the optical member is connected the laser instrument with the light-emitting window, the output of laser instrument to the optical member jet out with the light axis looks vertically light beam of light-emitting window, the light beam is in under the reflection of optical member and refraction finally with the light axis of light-emitting window is parallel, and by the light-emitting window jets out, the light axis of light-emitting window with the distance between the laser instrument place plane is 0.2-0.8 cm. Compared with the prior art, the utility model provides an effectual reduction light-emitting component light-emitting port height has avoided the subassembly because of the too high appearance of highly exceeding standard problem that leads to of light-emitting port. The utility model also provides a but small-size encapsulation hot plug optical module of this optical emission subassembly of utensil.

Description

Light emitting assembly and small-sized packaged hot-pluggable optical module with same

Technical Field

The utility model relates to an optical communication technical field especially relates to a light emission subassembly and utensil this light emission subassembly's small-size encapsulation hot plug optical module.

Background

With the explosive growth of Internet services, data services represented by IP are rapidly growing and gradually developing into the mainstream of network services, modern communication networks are gradually burdened with the increasing demand of broadband high-speed data and media communication, and the transmission mode and the propagation medium of information are developing towards the optical network.

Small Form-factor Pluggable (SFP) modules can be configured with more than one time of ports on the same panel due to their smaller size, and therefore, they have been rapidly developed in recent years, and a transceiver is a core component of a Small Form-factor Pluggable (SFP) Optical module, and often includes a Transmitter Optical Subassembly (TOSA), a Receiver Optical Subassembly (ROSA), and a Printed Circuit Board (PCBA) connected to the TOSA and the ROSA respectively, and converts an electrical signal into an Optical signal for emission through the TOSA and converts the Optical signal into an electrical signal for reception through the ROSA, thereby greatly facilitating people's lives.

However, referring to fig. 1 and fig. 2 in combination, in the light emitting device of the prior art, the light beam emitted by the laser is often emitted into the light outlet after three times of refraction, which easily causes an excessively large distance between the light outlet of the light emitting device and the plane where the laser is located (1.6 cm in fig. 1), and when the light emitting device is mounted on the small-sized packaged hot-pluggable optical module, the size of the optical port of the module is excessively large (a size in fig. 2), which exceeds the requirement of the MSA protocol, and easily causes interference to the unlocking operation.

Therefore, there is a need to provide a new light emitting device and a small-sized packaged hot-pluggable optical module having the same to solve the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a not enough to prior art exists, the utility model aims to provide a can effectively reduce the light mouth height, and then avoided the subassembly because of the too high light emitting component that highly exceeds standard of leading to of light-emitting port and utensil this light emitting component's but small-size encapsulation hot plug optical module.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a light emission subassembly, includes the shell and accept in laser instrument and optical member in the shell, the laser instrument set up in shell length direction's one end, the casing is kept away from the one end of laser instrument is provided with the light-emitting window, optical member connects the laser instrument with the light-emitting window, the output of laser instrument to the optical member jet out with the light beam of light-emitting window optical axis looks vertically, the light beam is in under the reflection and the refraction effect of optical member finally with the light-emitting window optical axis is parallel, and by the light-emitting window jets out, the light-emitting window optical axis with the distance between the laser instrument place plane is 0.2-0.8 cm.

Preferably, the optical member includes along the laser instrument extremely first surface, second surface, third surface and the fourth surface that the light-emitting opening direction set gradually, the first surface with the output of laser instrument is relative and the slope sets up, the light beam passes through in proper order the first surface with the reflection of second surface reaches the third surface with the refraction effect back of fourth surface with the optical axis is parallel, and by the light-emitting opening jets out.

Preferably, the first surface with the contained angle between the optical axis of light-emitting window is 50, the second surface with the contained angle between the optical axis of light-emitting window is 170, the third surface with the contained angle between the optical axis of light-emitting window is 40, the fourth surface with the contained angle between the optical axis of light-emitting window is 115.

Preferably, the distance between the optical axis of the light outlet and the plane where the laser is located is 0.5 cm.

Preferably, the optical element further includes a fifth surface, a sixth surface, a seventh surface, and an eighth surface, the fifth surface is disposed near the third surface and opposite to the third surface, the sixth surface, the seventh surface, and the eighth surface and the laser together define an extinction cavity, when the light beam passes through the third surface, part of the light is reflected and shines on the fifth surface, and when the light beam passes through the fifth surface, the light is reflected and shines on the extinction cavity.

Preferably, an included angle between the fifth surface and the optical axis of the light outlet is 150 °, an included angle between the sixth surface and the optical axis of the light outlet is 110 °, and an included angle between the seventh surface and the optical axis of the light outlet is 45 °.

Preferably, the separator is disposed on a side of the fourth surface close to the third surface.

Preferably, the optical fiber connector further comprises a ferrule communicated with the light outlet, and a shaft of the ferrule and an optical axis of the light outlet are located on the same straight line.

A small form factor, hot pluggable, optical module comprising a light emitting assembly as in any one of the preceding.

To sum up, compare with prior art, the utility model discloses following beneficial effect has: the distance between the optical axis of the light outlet and the plane where the laser is located is set to be 0.2-0.8cm, so that the height of the light outlet is reduced, and the problem that the height of the assembly exceeds the standard due to the fact that the light outlet is too high is avoided; the structure of the optical element in the prior art is changed by arranging a first surface, a second surface, a third surface and a fourth surface on the optical element, wherein the first surface, the second surface, the third surface and the fourth surface are sequentially arranged along the direction from the laser to the light outlet, a light beam emitted by the laser is reflected on the first surface, then emitted to the second surface, reflected on the second surface and irradiated to the third surface again, refracted on the third surface and emitted to the fourth surface, and then refracted on the fourth surface again and then parallel to the optical axis and emitted from the light outlet, so that the distance between the light outlet of the light emitting component and the incident plane of the laser is reduced through the light path design of twice reflection and twice refraction, and the size of the light port of the small-sized heat-sealable pluggable optical module provided with the light emitting component can be reduced, the requirement of an MSA protocol is met, and interference during unlocking operation is avoided; by arranging the extinction cavity formed by the sixth surface, the seventh surface, the eighth surface and the laser, reflected light of the third surface can be effectively collected, and the stability and the reliability of the light emitting assembly are improved.

Drawings

FIG. 1 is a top view of a prior art light emitting assembly and a cross-sectional view of the top view taken along line I-I;

FIG. 2 is a schematic plan view of a small-sized packaged hot-pluggable optical module of the prior art;

fig. 3 is a top view of a light emitting module according to an embodiment of the present invention and a cross-sectional view taken along line III-III of the top view;

fig. 4 is a light path direction diagram of a light emitting module according to a first embodiment of the present invention;

fig. 5 is a schematic plan view of a small-sized packaged hot-pluggable optical module according to an embodiment of the present invention.

In the figure, 100, a light emitting assembly; 10. a housing; 20. a laser; 30. an optical member; 31. a first surface; 32. a second surface; 33. a third surface; 34. a fourth surface; 35. a fifth surface; 36. a sixth surface; 37. a seventh surface; 50. inserting a core; 101. a light outlet; 102. a light beam; 103. an extinction cavity; 200. a small-sized packaged hot-pluggable optical module.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings and examples. The following experimental examples and examples are intended to further illustrate but not limit the invention.

Example one

Referring to fig. 3 and 4, the present invention provides an optical transmission module 100, wherein the optical transmission module 100 includes a housing 10, a laser 20 and an optical element 30 housed in the housing 10, and an isolator and a ferrule 50. The laser 20 is disposed at one end of the housing 10 in the length direction, a light exit 101 is disposed at one end of the housing 10 away from the laser 20, and the optical element 30 is connected to the laser 20 and the light exit 101.

The output end of the laser 20 emits a light velocity 102 perpendicular to the optical axis of the light exit 101 to the optical element 30, and the light beam 102 is finally parallel to the optical axis of the light exit 101 under the reflection and refraction of the optical element and is emitted from the light exit 101.

Specifically, the distance between the optical axis of the light outlet 101 and the plane where the laser 20 is located is 0.2-0.8 cm. Preferably, in the present embodiment, a distance between an optical axis of the light exit 101 and a plane on which the laser 20 is located is 0.5 cm.

The optical member 30 includes a first surface 31, a second surface 32, a third surface 33, a fourth surface 34, a fifth surface 35, a sixth surface 36, a seventh surface 37, and an eighth surface. The first surface 31, the second surface 32, the third surface 33, and the fourth surface 34 are sequentially disposed along a direction from the laser 20 to the light exit 101.

The first surface 31 is opposite to the output end of the laser 20 and is disposed obliquely, and the light beam 102 is parallel to the optical axis after being reflected by the first surface 31 and the second surface 32 and refracted by the third surface 33 and the fourth surface, and is emitted from the light outlet 101.

Specifically, the first surface 31 with the contained angle between the optical axis of light-emitting port 101 is 50, the second surface 32 with the contained angle between the optical axis of light-emitting port 101 is 170, the third surface 33 with the contained angle between the optical axis of light-emitting port 101 is 40, the fourth surface 34 with the contained angle between the optical axis of light-emitting port 101 is 115.

The fifth surface 35 is disposed adjacent to the third surface 33 and opposite to the third surface 33, and the sixth surface 36, the seventh surface 37 and the eighth surface together with the laser 20 enclose an extinction cavity 103. When the light beam 102 passes through the third surface 33, part of the light is reflected and irradiated to the fifth surface 35, and reflected at the fifth surface 35 and irradiated to the extinction cavity 103.

Specifically, the included angle between the fifth surface 35 and the optical axis of the light exit 101 is 150 °, the included angle between the sixth surface 36 and the optical axis 101 of the light exit 101 is 110 °, and the included angle between the seventh surface 37 and the optical axis of the light exit 101 is 45 °.

The separator (not shown) is disposed on a side of the fourth surface 34 close to the third surface 33. By providing the isolator, the reflection of the light beam 102 when passing through the fourth surface 34 can be effectively controlled, further improving the stability and reliability of the light emitting assembly 100.

The ferrule 50 communicates with the light outlet 101. Preferably, the axis of the ferrule 50 is aligned with the optical axis of the light exit 101. The plurality of light beams 102 passing through the fourth surface 34 pass through the ferrule 50 before being emitted through the light outlet 101, so that the emitted light beams 102 are more concentrated, and the reliability of the light emitting assembly is improved.

Example two

Please specifically refer to fig. 5, the present invention further provides a small-sized packaged hot-pluggable optical module 200, wherein the small-sized packaged hot-pluggable optical module 200 includes the optical transmitter 100, and the optical transmitter 100 is arranged such that the height of the light outlet of the optical transmitter 100 is low, so that the size of the optical port of the small-sized packaged hot-pluggable optical module 200 is reduced (size B in fig. 5), which satisfies the requirement of MSA protocol and avoids the interference during the unlocking operation.

Compared with the prior art, the utility model discloses following beneficial effect has: the distance between the optical axis of the light outlet and the plane where the laser is located is set to be 0.2-0.8cm, so that the height of the light outlet is reduced, and the problem that the height of the assembly exceeds the standard due to the fact that the light outlet is too high is avoided; the structure of the optical element in the prior art is changed by arranging a first surface, a second surface, a third surface and a fourth surface on the optical element, wherein the first surface, the second surface, the third surface and the fourth surface are sequentially arranged along the direction from the laser to the light outlet, a light beam emitted by the laser is reflected on the first surface, then emitted to the second surface, reflected on the second surface and irradiated to the third surface again, refracted on the third surface and emitted to the fourth surface, and then refracted on the fourth surface again and then parallel to the optical axis and emitted from the light outlet, so that the distance between the light outlet of the light emitting component and the incident plane of the laser is reduced through the light path design of twice reflection and twice refraction, and the size of the light port of the small-sized heat-sealable pluggable optical module provided with the light emitting component can be reduced, the requirement of an MSA protocol is met, and interference during unlocking operation is avoided; by arranging the extinction cavity formed by the sixth surface, the seventh surface, the eighth surface and the laser, reflected light of the third surface can be effectively collected, and the stability and the reliability of the light emitting assembly are improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should be construed as the scope of the present invention.

Claims

1. The utility model provides a light emission subassembly, includes the shell and accept in laser instrument and optical member in the shell, the laser instrument set up in shell length direction's one end, the casing is kept away from the one end of laser instrument is provided with the light-emitting window, optical member connects the laser instrument with the light-emitting window, a serial communication port, the output of laser instrument to optical member jet out with the light axis looks vertically light beam of light-emitting window, the light beam is in under optical member's reflection and refraction finally with the light axis of light-emitting window is parallel, and by the light-emitting window jets out, the light axis of light-emitting window with the distance between the laser instrument place plane is 0.2-0.8 cm.

2. The light emitting module of claim 1, wherein the optical element includes a first surface, a second surface, a third surface and a fourth surface sequentially disposed along a direction from the laser to the light exit port, the first surface is opposite to the output end of the laser and is disposed obliquely, and the light beam is parallel to the optical axis after sequentially passing through the reflection of the first surface and the second surface and the refraction of the third surface and the fourth surface, and exits from the light exit port.

3. The light emitting assembly of claim 2, wherein an included angle between the first surface and the optical axis of the light outlet is 50 °, an included angle between the second surface and the optical axis of the light outlet is 170 °, an included angle between the third surface and the optical axis of the light outlet is 40 °, and an included angle between the fourth surface and the optical axis of the light outlet is 115 °.

4. The light emitting assembly of claim 3, wherein a distance between an optical axis of the light outlet and a plane of the laser is 0.5 cm.

5. The light emitting assembly of claim 3, wherein the optical element further comprises a fifth surface, a sixth surface, a seventh surface, and an eighth surface, the fifth surface is disposed adjacent to and opposite the third surface, the sixth surface, the seventh surface, and the eighth surface cooperate with the laser to define an extinction cavity, and when the light beam passes through the third surface, a portion of the light is reflected toward the fifth surface and reflected at the fifth surface into the extinction cavity.

6. The light emitting assembly of claim 5, wherein an angle between the fifth surface and the optical axis of the light outlet is 150 °, an angle between the sixth surface and the optical axis of the light outlet is 110 °, and an angle between the seventh surface and the optical axis of the light outlet is 45 °.

7. The light emitting assembly of claim 2, further comprising an isolator disposed on a side of the fourth surface proximate the third surface.

8. The light emitting assembly of claim 2, further comprising a ferrule in communication with the light outlet, wherein an axis of the ferrule is collinear with an optical axis of the light outlet.

9. A small form factor, hot pluggable optical module comprising the optical transmit assembly of any of claims 1-8.