Same-wavelength receiving and transmitting MINI optical assembly
Through the design of the same wavelength, the MINI light component, and the use of components such as lens, glass, and light -absorbing tablets to solve the problem of miscellaneous absorption and light loss in optical communication devices, realize high -efficiency light signal transmission and selective transmission, which improves the light, which improves the light. Utilization and processing efficiency.
Patent Information
- Application Number
- CN202421269794.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-05
- Publication Date
- 2025-01-28
- Estimated Expiration
- 2034-06-05
AI Technical Summary
When existing optical communication devices transmit optical signals, the slurred light has adverse effects on the absorption of light at a specified wavelength, and the optical signal is prone to loss during transmission, resulting in low light utilization.
Design a mINI light component of the same wavelength, including 1310 laser, 1550 laser, optoelectronics diode and tail fiber. Through components such as lens, glass, and light absorption, the efficient coupling and selective transmission of light signals are realized to reduce the miscellaneous light The impact and reduce light loss.
Realizing the launch and receiving of the same band of 1310 wavelengths and 1550 wavelength light, the isolation degree is less than -45DB, which improves the utilization rate and processing efficiency of light, and reduces light loss.
Smart Images
Figure CN222420607U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical communication, in particular to a same-wavelength transmitting and receiving MINI optical component. Background Art
[0002] With the continuous development of optical communication technology, the utilization rate of optical signals is constantly improving. How to reduce the adverse effects of stray light on the absorption of light of a specified wavelength when optical communication devices transmit optical signals, and how to reduce light loss and improve light utilization, while improving its processing efficiency, has become of great significance in current optical receiving and transmitting components. Utility Model Content
[0003] The utility model provides a same-wavelength transmitting and receiving MINI optical component to solve the above-mentioned deficiencies of the prior art, improve the utilization rate of light, reduce the influence of stray light on the transmission of light of a specified wavelength, and has strong practicality.
[0004] In order to achieve the purpose of this utility model, the following technologies are proposed:
[0005] A same-wavelength transceiver MINI optical component includes a base body, a 1310 laser is provided at the upper end of the base body, a pigtail is provided at one end of the base body, a 1550 laser is provided at the other end of the base body, and a photodiode is provided at the lower end of the base body, wherein the 1310 laser is used to emit light of a wavelength of 1310nm, and the 1550 laser is used to emit light of a wavelength of 1550nm. The photodiode is used to interpret the optical signal and convert the optical-to-electrical signal. The pigtail is used for light transmission.
[0006] A cavity is provided inside the base body, and a first placing table and a second placing table are provided in the cavity. The length direction of the first placing table forms an angle of 45° with the horizontal direction, and the length direction of the second placing table forms an angle of 45° with the horizontal direction. A first glass slide is provided on the first placing table, and a second glass slide is provided on the second placing table. The first glass slide and the second glass slide arranged at 45 degrees can firstly facilitate the processing of optical communication devices, and secondly, optical path transmission can be realized with the help of the first glass slide and the second glass slide.
[0007] A first ball lens is provided at the inner end of the 1310 laser, a second ball lens is provided at the inner end of the 1550 laser, and a convex lens is provided at the inner end of the photodiode. The ball lens can transform the divergent light beam output by the optical fiber into a nearly parallel light beam, or converge the parallel light beam to the receiving end of the optical fiber, thereby improving the coupling efficiency of the optical signal. This is crucial for the connection between optical fibers and the coupling between optical fibers and light sources, ensuring that the optical signal can be transmitted efficiently and losslessly. In fiber coupling applications, the ball lens can significantly improve the coupling efficiency of light energy from one optical fiber to another or from a light source to an optical fiber. The ball lens can help change the propagation direction of the optical signal and realize the flexible layout of the spatial optical path, which is very useful for the compact design of the equipment and the construction of complex optical fiber networks. The ball lens can also enhance the optical signal, especially when the output spot size or shape of the source device does not match the receiving end of the target optical fiber, the ball lens can adjust the spot size and shape to improve the coupling effect. The use of ball lenses can also simplify the fiber alignment process, because their alignment tolerance is relatively high, reducing the requirements for high-precision mechanical alignment, thereby reducing costs and improving production efficiency.
[0008] A bracket is provided at the inner end of the 1310 laser, and a hole is opened on the bracket. A placement slope is formed at the lower end of the bracket, and the placement slope is inclined at 45 degrees. A light absorbing sheet is provided on the placement slope. The light absorbing sheet can absorb stray light, thereby improving the filtering effect of stray light. In order to further improve the filtering effect, the bracket is blackened.
[0009] Furthermore, the first placement platform and the second placement platform are concave structures, and grooves are formed at the bottom thereof, which facilitate the transmission of light, and this structure can also stably limit the first glass slide and the second glass slide.
[0010] Furthermore, notches are formed on both sides of the first placement platform and the second placement platform to facilitate mounting operations of the first glass slide and the second glass slide.
[0011] Furthermore, the second glass slide is used for transmission of light with a wavelength of 1550 nm and reflection of light with a wavelength of 1310 nm, and selective transmission of light is ensured through selection.
[0012] Furthermore, the first glass slide is used for reflecting light with a wavelength of 1550 nm and light with a wavelength of 1310 nm, so as to ensure the selective propagation of light through a selection method.
[0013] Furthermore, the first glass slide is used to reflect 50% of the light with a wavelength of 1550nm and the light with a wavelength of 1310nm. After the light passes through the first glass slide, only about 25% of the light can be coupled into the pigtail, and 75% of the useless light will be repeatedly reflected in the main cavity of the optical component, and this part of the useless light will eventually be absorbed by the light absorber.
[0014] Furthermore, a black tube is provided on the inner side of the photodiode, the black tube is located below the second glass slide, and the convex lens is located directly below the black tube, and the inner diameter of the black tube is 0.6 mm. The black tube can reflect as little emitted light as possible to the light receiving surface of the photodiode, and at the same time, as much light entering the pigtail as possible can be received by the photodiode.
[0015] Furthermore, the upper end of the blackening tube is formed with an inclined surface to avoid affecting the placement of the first glass slide.
[0016] Furthermore, the pigtail includes a tail sleeve arranged on the seat body, an optical fiber head is arranged in the tail sleeve, and the inner end face of the optical fiber head is inclined to reduce return loss, enhance optical coupling efficiency and improve stability.
[0017] Furthermore, the optical fiber head is connected to a plug via an optical fiber.
[0018] The advantages of the above technical solution are:
[0019] The utility model successfully realizes the same-band transmission and reception of light with a wavelength of 1310 and a wavelength of 1550, and the isolation degree is less than -45db; and the miniaturization of optical components is realized. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to make the purpose, technical solutions and advantages of the utility model clearer, the utility model will be further described in detail below with reference to the accompanying drawings.
[0021] Figure 1 The three-dimensional structure diagram of the MINI optical component for transmitting and receiving the same wavelength is shown.
[0022] Figure 2 A cross-sectional view of a MINI optical component for transmitting and receiving the same wavelength is shown.
[0023] Figure 3 The three-dimensional structure diagram of the interior of the MINI optical component for transmitting and receiving the same wavelength is shown.
[0024] Figure 4 A three-dimensional structural diagram of the seat body is shown.
[0025] Figure 5 Another three-dimensional structural diagram of the interior of the MINI optical component for transmitting and receiving the same wavelength is shown. DETAILED DESCRIPTION
[0026] like Figure 1~Figure 5As shown, a same-wavelength transmitting and receiving MINI optical component includes a base body 2, a 1310 laser 5 is provided at the upper end of the base body 2, a first ball lens 50 is provided at the inner end of the 1310 laser 5, a pigtail 3 is provided at one end of the base body 2, a 1550 laser 6 is provided at the other end of the base body 2, a second ball lens 60 is provided at the inner end of the 1550 laser 6, a photodiode 4 is provided at the lower end of the base body 2, and a convex lens 41 is provided at the inner end of the photodiode 4.
[0027] The base body 2 is provided with a cavity inside, and a first placement platform 22 and a second placement platform 21 are provided in the cavity. The length direction of the first placement platform 22 forms an angle of 45° with the horizontal direction, and the length direction of the second placement platform 21 forms an angle of 45° with the horizontal direction. A first glass slide 7 is provided on the first placement platform 22, and the first glass slide 7 is used for reflecting light with a wavelength of 1550nm and light with a wavelength of 1310nm. Specifically, the first glass slide 7 is used for reflecting light with a wavelength of 1550nm and light with a wavelength of 1 50% reflection of 310nm light, a second glass slide 70 is provided on the second placement table 21, and the second glass slide 70 is located directly below the first ball lens 50. The second glass slide 70 is used for transmission of light with a wavelength of 1550nm and reflection of light with a wavelength of 1310nm. A bracket 51 is provided at the inner end of the 1310 laser 5, and a hole 52 is opened on the bracket 51. A placement slope 53 is formed at the lower end of the bracket 51, and the placement slope 53 is inclined at 45°. A light absorbing sheet 71 is provided on the placement slope 53.
[0028] A black tube 42 is provided on the inner side of the photodiode 4 . The black tube 42 is located below the first glass slide 7 , and the convex lens 41 is located directly below the black tube 42 . The upper end of the black tube 42 is formed with an inclined surface.
[0029] The optical paths formed by the above components are:
[0030] The first optical path is the light with a wavelength of 1550nm emitted from the 1550 laser 6. The light with a wavelength of 1550nm first passes through the second ball lens 60 and enters the interior of the seat body 2. The light with a wavelength of 1550nm entering the interior of the seat body 2 will pass through the second glass slide 70 and the first glass slide 7. When the light with a wavelength of 1550nm passes through the second glass slide 70, the light with a wavelength of 1550nm will pass through the second glass slide 70, and when the light with a wavelength of 1550nm passes through the first glass slide 7, 50% of the light with a wavelength of 1550nm will pass through, and at the same time, about 25% of the light will enter the pigtail 3, and 75% of the useless light will be repeatedly reflected in the main body cavity of the optical component. In order to prevent this part of the useless light from being received by the photodiode 4, it is absorbed by the light absorbing plate 71, and further absorbed by setting a blackening tube 42.
[0031] The second optical path is the light with a wavelength of 1310nm emitted from the 1310 laser 5. The light with a wavelength of 1310nm first passes through the first ball lens 50 and enters the interior of the seat body 2. The light with a wavelength of 1310nm entering the interior of the seat body 2 will pass through the second glass slide 70 and the first glass slide 7. When the light with a wavelength of 1310nm passes through the second glass slide 70, the light with a wavelength of 1310nm will be reflected by the second glass slide 70, so that the light with a wavelength of 1310nm passes through the first glass slide 7, and part of the light with a wavelength of 1310nm will pass through the first glass slide 7 and about 25% of the light will enter the pigtail 3, and part of the light with a wavelength of 1310nm will be absorbed by the light absorbing sheet 71 and the blackening tube 42 described below through the reflection of the first glass slide 7, thereby preventing the light from being received by the photodiode 4.
[0032] The third optical path is emitted from the pigtail 3, and part of the light will be reflected to the photodiode 4 through the first glass slide 7, and 50% of the light emitted from the pigtail 3 will be reflected to the photodiode 4, while the incoming light will pass through the blackening tube 42, and the light reflected to the photodiode 4 will be converted into an electrical signal.
[0033] In some embodiments, the first placement platform 22 and the second placement platform 21 are concave structures, with a groove formed at the bottom, and notches 23 formed on both sides of the first placement platform 22 and the second placement platform 21 .
[0034] In this embodiment, the mounting operation of the second glass slide 70 and the first glass slide 7 is convenient.
[0035] In some embodiments, the pigtail 3 includes a tail sleeve 30 disposed on the base body 2 , and an optical fiber head 31 is disposed in the tail sleeve 30 . The inner end surface of the optical fiber head 31 is inclined, and the optical fiber head 31 is connected to a plug 9 through an optical fiber 8 .
[0036] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.
Claims
1. A MINI optical component for transmitting and receiving at the same wavelength, characterized in that: It comprises a base body (2), wherein a 1310 laser (5) is provided at the upper end of the base body (2), a pigtail (3) is provided at one end of the base body (2), a 1550 laser (6) is provided at the other end of the base body (2), and a photodiode (4) is provided at the lower end of the base body (2); A cavity is provided inside the seat body (2), and a first placement platform (22) and a second placement platform (21) are provided in the cavity; the length direction of the first placement platform (22) forms an angle of 45° with the horizontal direction, and the length direction of the second placement platform (21) forms an angle of 45° with the horizontal direction; A first glass slide (7) is provided on the first placement table (22), and a second glass slide (70) is provided on the second placement table (21); 1310 A first ball lens (50) is provided at the inner end of the laser (5); A second ball lens (60) is provided at the inner end of the 1550 laser (6); A convex lens (41) is provided at the inner end of the photodiode (4); A bracket (51) is provided at the inner end of the 1310 laser (5), a hole (52) is provided on the bracket (51), a placement slope (53) is formed at the lower end of the bracket (51), the placement slope (53) is inclined at 45 degrees, and a light absorbing sheet (71) is provided on the placement slope (53).
2. The same wavelength transmitting and receiving MINI optical component according to claim 1, characterized in that: The first placement platform (22) and the second placement platform (21) are concave structures, and grooves are formed on the bottoms thereof.
3. The same wavelength transmitting and receiving MINI optical component according to claim 1, characterized in that: Notches (23) are formed on both sides of the first placement platform (22) and the second placement platform (21).
4. The same wavelength transmitting and receiving MINI optical component according to claim 1, characterized in that: The second glass slide (70) is used for transmitting light with a wavelength of 1550 nm and reflecting light with a wavelength of 1310 nm.
5. The same wavelength transmitting and receiving MINI optical component according to claim 1, characterized in that: The first glass slide (7) is used for reflecting light with a wavelength of 1550 nm and light with a wavelength of 1310 nm.
6. The same wavelength transmitting and receiving MINI optical component according to claim 5, characterized in that: The first glass slide (7) is used for 50% reflection of light with a wavelength of 1550 nm and light with a wavelength of 1310 nm.
7. The same wavelength transmitting and receiving MINI optical component according to claim 1, characterized in that: A blackening tube (42) is provided on the inner end of the photodiode (4), the blackening tube (42) is located below the second glass slide (70), and the convex lens (41) is located directly below the blackening tube (42).
8. The same wavelength transmitting and receiving MINI optical component according to claim 7, characterized in that: The upper end of the blackened tube (42) is formed with an inclined surface.
9. The same wavelength transmitting and receiving MINI optical component according to claim 1, characterized in that: The pigtail (3) comprises a tail sleeve (30) arranged on the seat body (2), an optical fiber head (31) is arranged in the tail sleeve (30), and the inner end surface of the optical fiber head (31) is arranged in an inclined manner.
10. The same wavelength transmitting and receiving MINI optical component according to claim 9, characterized in that: The optical fiber head (31) is connected to a plug (9) via an optical fiber (8).