Optical emitting component and small package hot-swappable optical module having the same

Abstract

The present invention discloses a light emitting component, including a housing and a laser and an optical component housed in the housing, wherein the laser is arranged at one end of the housing in the length direction, and a light outlet is arranged at the end of the housing away from the laser, and the optical component connects the laser and the light outlet, and the output end of the laser emits a light beam perpendicular to the optical axis of the light outlet to the optical component, and the light beam is finally parallel to the optical axis of the light outlet under the reflection and refraction of the optical component, and is emitted from the light outlet, and the distance between the optical axis of the light outlet and the plane where the laser is located is 0.2-0.8cm. Compared with the related art, the light emitting component provided by the present invention effectively reduces the height of the light outlet, avoiding the problem of excessive height of the component due to the excessive height of the light outlet. The present invention also provides a small-package hot-swappable optical module with the light emitting component.

Description

Technical Field

[0001] The present invention relates to the technical field of optical communication, and in particular to an optical emitting component and a small-sized packaged hot-pluggable optical module having the optical emitting component. Background Art

[0002] With the explosive growth of Internet services, data services represented by IP have grown rapidly and have gradually developed into the mainstream of network services. Modern communication networks have gradually become overwhelmed by people's growing demand for broadband, high-speed data and media communications. The transmission method and communication media of information are developing towards optical networks.

[0003] Small Form-factor Pluggable (SFP) modules have developed rapidly in recent years due to their smaller size and the ability to configure more than twice the number of ports on the same panel. Transceivers are the core components of small form-factor pluggable optical modules. Transceivers often include a transmitter optical subassembly (TOSA), a receiver optical subassembly (ROSA), and a printed circuit board assembly (PCBA) connected to the transmitter optical subassembly and the receiver optical subassembly, respectively. The transmitter optical subassembly converts electrical signals into optical signals for emission, and the receiver optical subassembly converts optical signals into electrical signals for reception, which greatly facilitates people's lives.

[0004] However, please refer to Figure 1 and Figure 2 In the prior art optical emission components, the light beam injected by the laser is often injected into the light outlet after three refractions. This easily leads to a large distance between the light outlet of the optical emission component and the plane where the laser is located ( Figure 1 After the optical transmitting assembly is installed in a small package hot-swappable optical module, the size of the module optical port is too high ( Figure 2 Medium A size), which exceeds the requirements of the MSA protocol and is likely to interfere with the unlocking operation.

[0005] Therefore, it is necessary to provide a new optical emitting component and a small-package hot-swappable optical module having the optical emitting component to solve the above technical problems. Summary of the invention

[0006] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an optical emission component that can effectively reduce the height of the optical port, thereby avoiding the component exceeding the height limit due to the light outlet being too high, and a small-package hot-swappable optical module having the optical emission component.

[0007] To achieve the above object, the present invention provides the following technical solution:

[0008] A light emitting component comprises a shell and a laser and an optical component housed in the shell, wherein the laser is arranged at one end of the shell in the length direction, a light outlet is arranged at the end of the shell away from the laser, the optical component connects the laser and the light outlet, the output end of the laser emits a light beam perpendicular to the optical axis of the light outlet to the optical component, the light beam is finally parallel to the optical axis of the light outlet under the reflection and refraction of the optical component, and is emitted from the light outlet, and the distance between the optical axis of the light outlet and the plane where the laser is located is 0.2-0.8 cm.

[0009] Preferably, the optical component includes a first surface, a second surface, a third surface and a fourth surface which are arranged in sequence along the direction from the laser to the light outlet, the first surface is opposite to the output end of the laser and is arranged at an angle, and the light beam is parallel to the optical axis after being reflected by the first surface and the second surface and refracted by the third surface and the fourth surface in sequence, and is emitted from the light outlet.

[0010] Preferably, the angle between the first surface and the optical axis of the light outlet is 50°, the angle between the second surface and the optical axis of the light outlet is 170°, the angle between the third surface and the optical axis of the light outlet is 40°, and the angle between the fourth surface and the optical axis of the light outlet is 115°.

[0011] Preferably, the distance between the optical axis of the light outlet and the plane where the laser is located is 0.5 cm.

[0012] Preferably, the optical component further includes a fifth surface, a sixth surface, a seventh surface and an eighth surface, the fifth surface is close to the third surface and is arranged opposite to the third surface, the sixth surface, the seventh surface and the eighth surface and the laser together form an extinction cavity, and when the light beam passes through the third surface, part of the light is reflected toward the fifth surface, and is reflected on the fifth surface and shines into the extinction cavity.

[0013] Preferably, the angle between the fifth surface and the optical axis of the light outlet is 150°, the angle between the sixth surface and the optical axis of the light outlet is 110°, and the angle between the seventh surface and the optical axis of the light outlet is 45°.

[0014] Preferably, it also includes an isolator arranged on the side of the fourth surface close to the third surface.

[0015] Preferably, it further comprises a core inserted in communication with the light outlet, wherein the axis of the core inserted is located on the same straight line as the optical axis of the light outlet.

[0016] A small-package hot-pluggable optical module comprises any of the above-mentioned optical emitting components.

[0017] In summary, compared with the prior art, the present invention has the following beneficial effects: by setting the distance between the optical axis of the light outlet and the plane where the laser is located to be 0.2-0.8 cm, the height of the light outlet is reduced, and the problem of exceeding the height of the component due to the light outlet being too high is avoided; by setting the first surface, the second surface, the third surface and the fourth surface sequentially arranged along the direction from the laser to the light outlet on the optical component, the structure of the optical component in the prior art is changed, and the light beam emitted by the laser is reflected on the first surface and then emitted to the second surface, and is reflected again on the second surface and illuminated to the third surface, and is refracted on the third surface and enters the space. The light is reflected in the air medium and emitted to the fourth surface. After being refracted again on the fourth surface, it becomes parallel to the optical axis and is emitted from the optical port. The optical path design with two reflections and two refractions reduces the distance between the light outlet of the light emitting component and the incident plane of the laser, thereby reducing the size of the optical port of the small-package hot-swappable optical module equipped with the light emitting component to meet the requirements of the MSA protocol and avoid interference during the unlocking operation. By setting an extinction cavity surrounded by the sixth surface, the seventh surface, the eighth surface and the laser, the reflected light from the third surface can be effectively collected, thereby improving the stability and reliability of the light emitting component. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A top view of a light emitting component of the prior art and a cross-sectional view of the top view along line II;

[0019] Figure 2 It is a schematic diagram of the planar structure of a small package hot-swappable optical module in the prior art;

[0020] Figure 3 A top view of the light emitting assembly provided in the first embodiment of the present invention and a cross-sectional view of the top view along line III-III;

[0021] Figure 4 A light path diagram of the optical transmission component provided in the first embodiment of the present invention;

[0022] Figure 5This is a schematic diagram of the planar structure of a small-package hot-pluggable optical module provided in Embodiment 2 of the present invention.

[0023] In the figure, 100, optical emitting component; 10, housing; 20, laser; 30, optical component; 31, first surface; 32, second surface; 33, third surface; 34, fourth surface; 35, fifth surface; 36, sixth surface; 37, seventh surface; 50, ferrule; 101, light outlet; 102, light beam; 103, extinction cavity; 200, small package hot-swappable optical module. DETAILED DESCRIPTION

[0024] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments. The following experimental examples and embodiments are used to further illustrate but not limit the present invention.

[0025] Embodiment 1

[0026] Please refer to Figure 3 and Figure 4 The present invention provides an optical transmitting assembly 100, which includes a housing 10, a laser 20 and an optical component 30 contained in the housing 10, an isolator and a ferrule 50. The laser 20 is disposed at one end of the housing 10 in the length direction, a light outlet 101 is disposed at one end of the housing 10 away from the laser 20, and the optical component 30 connects the laser 20 and the light outlet 101.

[0027] The output end of the laser 20 emits a light beam 102 perpendicular to the optical axis of the light outlet 101 toward the optical component 30 . The light beam 102 is finally parallel to the optical axis of the light outlet 101 under the reflection and refraction of the optical component and is emitted from the light outlet 101 .

[0028] 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 this embodiment, the distance between the optical axis of the light outlet 101 and the plane where the laser 20 is located is 0.5 cm.

[0029] The optical element 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 arranged along the direction from the laser 20 to the light outlet 101.

[0030] The first surface 31 is opposite to the output end of the laser 20 and is arranged tilted. After being reflected by the first surface 31 and the second surface 32 and refracted by the third surface 33 and the fourth surface, the light beam 102 is parallel to the optical axis and emitted from the light outlet 101.

[0031] Specifically, the angle between the first surface 31 and the optical axis of the light outlet 101 is 50°, the angle between the second surface 32 and the optical axis of the light outlet 101 is 170°, the angle between the third surface 33 and the optical axis of the light outlet 101 is 40°, and the angle between the fourth surface 34 and the optical axis of the light outlet 101 is 115°.

[0032] The fifth surface 35 is close to the third surface 33 and is disposed opposite to the third surface 33. The sixth surface 36, the seventh surface 37 and the eighth surface and the laser 20 together form an extinction cavity 103. When the light beam 102 passes through the third surface 33, part of the light is reflected and shines toward the fifth surface 35, and is reflected from the fifth surface 35 and shines into the extinction cavity 103.

[0033] Specifically, the angle between the fifth surface 35 and the optical axis of the light outlet 101 is 150°, the angle between the sixth surface 36 and the optical axis 101 of the light outlet 101 is 110°, and the angle between the seventh surface 37 and the optical axis of the light outlet 101 is 45°.

[0034] The isolator (not shown) is disposed on the side of the fourth surface 34 close to the third surface 33. By disposing 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.

[0035] The ferrule 50 is connected to the light outlet 101. Preferably, the axis of the ferrule 50 is located on the same straight line as the optical axis of the light outlet 101. The plurality of light beams 102 passing through the fourth surface 34 first pass through the ferrule 50 before being emitted through the light outlet 101, so that the emitted light beams 102 are more concentrated, thereby improving the reliability of the light emitting assembly.

[0036] Embodiment 2

[0037] Please refer to Figure 5The present invention also provides a small package hot-pluggable optical module 200, wherein the small package hot-pluggable optical module 200 includes the optical emitting assembly 100. By setting the optical emitting assembly 100, the optical port size of the small package hot-pluggable optical module 200 is reduced due to the low height of the light outlet of the optical emitting assembly 100. Figure 5 Dimension B) in the figure meets the requirements of the MSA protocol and avoids interference during the unlocking operation.

[0038] Compared with the prior art, the present invention has the following beneficial effects: by setting the distance between the optical axis of the light outlet and the plane where the laser is located to be 0.2-0.8 cm, the height of the light outlet is reduced, and the problem of exceeding the height of the component due to the light outlet being too high is avoided; by setting the first surface, the second surface, the third surface and the fourth surface sequentially arranged along the direction from the laser to the light outlet on the optical component, the structure of the optical component in the prior art is changed, and the light beam emitted by the laser is reflected on the first surface and then emitted to the second surface, and is reflected again on the second surface and emitted to the third surface, and is refracted on the third surface and enters the air medium The light is reflected in the optical mass and emitted to the fourth surface. After being refracted again on the fourth surface, it becomes parallel to the optical axis and is emitted from the optical port. The optical path design with two reflections and two refractions reduces the distance between the light outlet of the optical emitting component and the incident plane of the laser, thereby reducing the size of the optical port of the small-package hot-swappable optical module equipped with the optical emitting component to meet the requirements of the MSA protocol and avoid interference during the unlocking operation. By setting an extinction cavity surrounded by the sixth surface, the seventh surface, the eighth surface and the laser, the reflected light from the third surface can be effectively collected, thereby improving the stability and reliability of the optical emitting component.

[0039] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A light emitting assembly, comprising a housing and a laser and an optical component housed in the housing, wherein the laser is disposed at one end of the housing in the length direction, a light outlet is disposed at one end of the housing away from the laser, and the optical component connects the laser and the light outlet, characterized in that: The output end of the laser emits a light beam perpendicular to the optical axis of the light outlet to the optical component. The light beam is finally parallel to the optical axis of the light outlet under the reflection and refraction of the optical component and is emitted from the light outlet. The optical component includes a first surface, a second surface, a third surface and a fourth surface which are sequentially arranged along the direction from the laser to the light outlet. The first surface is opposite to the output end of the laser and is arranged obliquely. After the light beam is sequentially reflected by the first surface and the second surface and refracted by the third surface and the fourth surface, it becomes parallel to the optical axis and is emitted from the light outlet. The angle between the first surface and the optical axis of the light outlet is 50°. The angle between the second surface and the optical axis of the light outlet is 50°. The angle between the optical axes of the light outlet is 170°, the angle between the third surface and the optical axis of the light outlet is 40°, the angle between the fourth surface and the optical axis of the light outlet is 115°, the distance between the optical axis of the light outlet and the plane where the laser is located is 0.5 cm, the optical component also includes a fifth surface, a sixth surface, a seventh surface and an eighth surface, the fifth surface is close to the third surface and arranged opposite to the third surface, the sixth surface, the seventh surface and the eighth surface and the laser together form an extinction cavity, when the light beam passes through the third surface, part of the light is reflected to the fifth surface, and is reflected on the fifth surface to shine into the extinction cavity.

2. The light emitting assembly according to claim 1, characterized in that: The angle between the fifth surface and the optical axis of the light outlet is 150°, the angle between the sixth surface and the optical axis of the light outlet is 110°, and the angle between the seventh surface and the optical axis of the light outlet is 45°.

3. The light emitting assembly according to claim 1, characterized in that: It also includes an isolator arranged on a side of the fourth surface close to the third surface.

4. The light emitting assembly according to claim 1, characterized in that: It also includes an insert core connected to the light outlet, wherein the axis of the insert core and the optical axis of the light outlet are located on the same straight line.

5. A small package hot-pluggable optical module, characterized in that: Comprising the light emitting assembly as described in any one of claims 1-4.

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