A single-fiber bidirectional transmission optical component

Abstract

The utility model relates to the technical field of optical fiber communication, and specifically to a single-fiber bidirectional transmission optical component. The single-fiber bidirectional transmission optical component includes an optical transmitter, an optical monitor, a lens assembly, and a control module. The optical transmitter is used to transmit a first optical signal to the optical fiber ferrule; the lens assembly is located between the optical fiber ferrule and the optical transmitter, and is used to transmit part of the first optical signal to the optical fiber ferrule, and transmit another part of the first optical signal to the optical monitor, so that the optical monitor can monitor the emission state of the optical transmitter according to the other part of the first optical signal; the control module is electrically connected to the optical transmitter and the optical monitor, and is used to control the working state of the optical transmitter. Once the working state of the optical transmitter is detected to change, the control module can adjust the working state of the optical transmitter so that the first optical signal emitted by the optical transmitter meets the emission requirements, thereby ensuring the transmission quality and stability of the single-fiber bidirectional transmission optical component.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber communication, in particular to a single-fiber bidirectional transmission optical component. Background Art

[0002] Bidirectional Single Fiber Transmission Technology (BIDI) refers to the ability to simultaneously transmit and receive optical signals in two directions in one optical fiber. BIDI uses only one optical fiber to complete the work that originally required two optical fibers, doubling the transmission capacity of existing optical fibers, thereby greatly saving optical fiber resources.

[0003] A single-fiber bidirectional optical subassembly (BOSA) is used to achieve bidirectional data transmission on a single optical fiber. A single-fiber bidirectional optical subassembly usually includes a transmitter for sending data and a receiver for receiving data. The transmitter uses a laser to convert electrical signals into optical signals and sends them to the optical fiber, while the receiver converts the received optical signals transmitted by the optical fiber back into electrical signals for processing.

[0004] The stable working state of the optical transmitter is crucial to the transmission quality and stability of the single-fiber bidirectional transmission optical component. Although the existing single-fiber bidirectional transmission optical components can perform bidirectional transmission of optical signals, they lack adaptive performance. Once the working state of the optical transmitter changes, it is difficult to ensure the transmission quality and stability. Utility Model Content

[0005] The technical problem to be solved by the embodiments of the utility model is to provide a single-fiber bidirectional transmission optical component to solve the problem that the single-fiber bidirectional transmission optical component in the prior art lacks adaptive performance and it is difficult to ensure the transmission quality and stability once the working state of the optical transmitter changes.

[0006] The single-fiber bidirectional transmission optical component provided in the embodiment of the utility model is used for bidirectional communication through an optical fiber ferrule, including an optical transmitter, which is used to transmit a first optical signal to the optical fiber ferrule; an optical receiver, which is used to receive a second optical signal transmitted by the optical fiber ferrule; an optical monitor, which is used to monitor the transmission state of the optical transmitter; a lens assembly, which is located between the optical fiber ferrule and the optical transmitter, and is used to emit part of the first optical signal to the optical fiber ferrule, emit another part of the first optical signal to the optical monitor, and emit the second optical signal to the optical receiver; a control module is electrically connected to the optical transmitter, the optical receiver and the optical monitor, and is used to control the working state of the optical transmitter.

[0007] Optionally, the lens assembly includes a first prism and a second prism, the reflective surface of the first prism and the reflective surface of the second prism are overlapped, the reflective surface of the first prism is coated with a first coating, the first coating can transmit and reflect the first light signal in a preset ratio, so that part of the first light signal can be emitted to the optical fiber ferrule, and another part of the first light signal can be reflected to the optical monitor; the reflective surface of the second prism is coated with a second coating, the second coating can transmit the first light signal, and reflect the second light signal, so that the second light signal can be reflected to the optical receiver.

[0008] Optionally, the first optical signal has a first wavelength, the second optical signal has a second wavelength, and the first wavelength and the second wavelength are not equal; the first coating layer can partially reflect the optical signal with the first wavelength, and the second coating layer can transmit the optical signal with the first wavelength and can reflect the optical signal with the second wavelength.

[0009] Optionally, the lens assembly also includes a third prism and a fourth prism, the light-emitting surface of the first prism is fitted with the light-incident surface of the third prism, the reflection surface of the third prism is perpendicular to the reflection surface of the first prism, and the third prism is used to change the emission direction of the first light signal; the light-emitting surface of the second prism is fitted with the light-incident surface of the fourth prism, the reflection surface of the fourth prism is parallel to the reflection surface of the first prism, and the fourth prism is used to change the emission direction of the second light signal.

[0010] Optionally, the reflective surface of the third prism is coated with a third coating, and the third coating can reflect the optical signal with the first wavelength; the reflective surface of the fourth prism is coated with a fourth coating, and the fourth coating can reflect the optical signal with the second wavelength.

[0011] Optionally, the lens assembly further includes a first coupling lens, which is disposed on the light incident surface of the first prism; the lens assembly further includes a second coupling lens, which is disposed on the light exit surface of the fourth prism.

[0012] Optionally, the single-fiber bidirectional transmission optical component also includes a heat-conductive substrate, which is arranged on the inner wall of one end of the single-fiber bidirectional transmission optical component away from the optical fiber ferrule interface, and the optical transmitter, the optical receiver, the optical monitor and the control module are arranged on the heat-conductive substrate.

[0013] Optionally, the single-fiber bidirectional transmission optical component further includes a temperature measuring component, which is disposed on the heat-conductive substrate and is electrically connected to the control module.

[0014] Optionally, the single-fiber bidirectional transmission optical component also includes a sealed wave plate, and an installation cavity is provided in the single-fiber bidirectional transmission optical component. The sealed wave plate separates the installation cavity to form a first cavity and a second cavity. The optical fiber core is inserted into the first cavity, and the lens assembly, the optical transmitter, the optical receiver, the optical monitor and the control module are located in the second cavity.

[0015] Optionally, anti-reflection films are provided on both sides of the sealed wave plate.

[0016] Compared with the prior art, the single-fiber bidirectional transmission optical component provided by the embodiment of the utility model has the beneficial effect that: the single-fiber bidirectional transmission optical component includes an optical transmitter, an optical monitor, a lens assembly and a control module. Among them, the optical transmitter is used to transmit a first optical signal to the optical fiber ferrule; the lens assembly is located between the optical fiber ferrule and the optical transmitter, and is used to transmit part of the first optical signal to the optical fiber ferrule, and transmit another part of the first optical signal to the optical monitor, so that the optical monitor can monitor the emission state of the optical transmitter according to the other part of the first optical signal; the control module is electrically connected to the optical transmitter and the optical monitor, and is used to control the working state of the optical transmitter. Once the working state of the optical transmitter is detected to change, the control module can adjust the working state of the optical transmitter so that the first optical signal emitted by the optical transmitter meets the emission requirements, thereby ensuring the transmission quality and stability of the single-fiber bidirectional transmission optical component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific implementation of the utility model will be further described in detail below with reference to the accompanying drawings and embodiments, in which:

[0018] Figure 1 It is a three-dimensional schematic diagram of a single-fiber bidirectional transmission optical component and an optical fiber ferrule provided in an embodiment of the utility model;

[0019] Figure 2 It is a cross-sectional schematic diagram of a single-fiber bidirectional transmission optical component and an optical fiber ferrule provided in an embodiment of the utility model;

[0020] Figure 3 It is a cross-sectional schematic diagram of a single-fiber bidirectional transmission optical component provided by an embodiment of the utility model;

[0021] Figure 4 It is an exploded schematic diagram of a single-fiber bidirectional transmission optical component provided by an embodiment of the utility model;

[0022] Figure 5 It is a schematic diagram of the optical path of a single-fiber bidirectional transmission optical component provided in an embodiment of the utility model.

[0023] The reference numerals in the figures are:

[0024] 100. Single-fiber bidirectional transmission optical component;

[0025] 1. Shell; 11. Mounting cavity; 111. First cavity; 112. Second cavity; 12. Optical fiber ferrule adapter; 121. Optical fiber ferrule interface; 13. Shell body; 131. First protrusion; 1311. Mounting groove; 14. Bottom plate; 141. First protrusion; 2. Optical transmitter; 3. Optical receiver; 4. Optical monitor; 5. Lens assembly; 51. First prism; 52. Second prism; 53. Third prism; 54. Fourth prism; 55. First coupling lens; 56. Second coupling lens; 6. Control module; 7. Thermal substrate; 8. Temperature measuring component; 9. Sealed wave plate;

[0026] 200. Fiber optic ferrule. DETAILED DESCRIPTION

[0027] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. Now, in conjunction with the accompanying drawings, a preferred embodiment of the present utility model is described in detail.

[0028] The present utility model embodiment provides a single-fiber bidirectional transmission optical component 100, such as Figures 1 to 5 As shown, the single-fiber bidirectional transmission optical component 100 is used for bidirectional communication through an optical fiber ferrule 200, and includes an optical transmitter 2, an optical receiver 3, an optical monitor 4, a lens component 5 and a control module 6. Among them, the optical transmitter 2 is used to transmit a first optical signal to the optical fiber ferrule 200; the optical receiver 3 is used to receive a second optical signal transmitted by the optical fiber ferrule 200; the optical monitor 4 is used to monitor the transmission state of the optical transmitter 2; the lens component 5 is located between the optical fiber ferrule 200 and the optical transmitter 2, and is used to transmit part of the first optical signal to the optical fiber ferrule 200, transmit another part of the first optical signal to the optical monitor 4, and transmit the second optical signal to the optical receiver 3; the control module 6 is electrically connected to the optical transmitter 2, the optical receiver 3 and the optical monitor 4, and is used to control the working state of the optical transmitter 2.

[0029] Specifically, the optical transmitter 2 is used to transmit a first optical signal to the optical fiber ferrule 200, and the optical receiver 3 is used to receive a second optical signal transmitted by the optical fiber ferrule 200; and the lens assembly 5 located between the optical fiber ferrule 200 and the optical transmitter 2 can transmit part of the first optical signal emitted by the optical transmitter 2 to the optical fiber ferrule 200, and transmit another part of the first optical signal to the optical monitor 4, and transmit the second optical signal to the optical receiver 3, so as to realize the function of bidirectional transmission communication of a single optical fiber. In addition, the single-fiber bidirectional transmission optical component 100 is provided with an optical monitor 4, which can monitor the emission state of the optical transmitter 2 by receiving part of the first optical signal reflected by the lens assembly 5. Once the working state of the optical transmitter 2 is detected to change, the control module 6 can adjust the working state of the optical transmitter 2 so that the first optical signal emitted by the optical transmitter 2 meets the emission requirements, thereby ensuring the transmission quality and stability of the single-fiber bidirectional transmission optical component 100.

[0030] In order to make the technical personnel in this field better understand the present utility model scheme, the following will be combined with the attached Figures 1 to 5 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0031] Further, as a specific implementation in some embodiments of the present utility model, Figures 2 to 5 As shown, the lens assembly 5 includes a first prism 51 and a second prism 52, and the reflective surface of the first prism 51 and the reflective surface of the second prism 52 are overlapped. The reflective surface of the first prism 51 is coated with a first coating (not shown in the figure), and the first coating can transmit and reflect the first light signal according to a preset ratio, so that part of the first light signal can be emitted to the optical fiber ferrule 200, and the other part of the first light signal can be reflected to the optical monitor 4; the reflective surface of the second prism 52 is coated with a second coating (not shown in the figure), and the second coating can transmit the first light signal and reflect the second light signal, so that the second light signal can be reflected to the optical receiver 3.

[0032] Specifically, the first prism 51 and the second prism 52 are triangular prisms, the reflection surface of the first prism 51 and the reflection surface of the second prism 52 are arranged to overlap, and the reflection surface of the first prism 51 is coated with a first coating, and the first coating can transmit and reflect the first light signal according to a preset ratio. Exemplarily, the preset ratio of transmission and reflection of the first coating can be set to 95% and 5%. When the optical transmitter 2 transmits the first light signal to the first prism 51, 95% of the first light signal can be transmitted through the reflection surface of the first prism 51 and the reflection surface of the second prism 52 in sequence, and enter the optical fiber ferrule 200 from the second prism 52; 5% of the first light signal is reflected by the reflection surface of the first prism 51 to the optical monitor 4, so that the optical monitor 4 can monitor the emission state of the optical transmitter 2.

[0033] Since the preset ratio is known and fixed, the optical signal power emitted by the optical transmitter 2 can be calculated according to the optical signal power currently received by the optical monitor 4 , thereby determining the emission state of the optical transmitter 2 .

[0034] In addition, after the second optical signal transmitted by the optical fiber ferrule 200 to the single-fiber bidirectional transmission optical component 100 is incident on the second prism 52 , the reflection surface of the second prism 52 can reflect the second optical signal to the optical receiver 3 for reception by the optical receiver 3 .

[0035] Further, as a specific implementation in some embodiments of the present utility model, Figures 2 to 5 As shown, the first optical signal has a first wavelength, the second optical signal has a second wavelength, and the first wavelength and the second wavelength are not equal; the first coating layer can partially reflect the optical signal with the first wavelength, the second coating layer can transmit the optical signal with the first wavelength, and can reflect the optical signal with the second wavelength.

[0036] Specifically, when light of different wavelengths is transmitted simultaneously in an optical core, light of different wavelengths can be transmitted along their own paths without causing interference. Therefore, single-fiber bidirectional transmission must ensure that the emission wavelength and the receiving wavelength are different. Exemplarily, the wavelength of the first optical signal is 1310nm, and the wavelength of the second optical signal is 1550nm. Understandably, in order to ensure that the first optical signal and the second optical signal can be transmitted and received completely, the first coating can be configured to reflect and transmit optical signals within a wavelength range of greater than or equal to 1310nm and less than or equal to 1350nm. The second coating can be configured to reflect optical signals within a wavelength range of greater than or equal to 1500nm and less than or equal to 1600nm, and transmit optical signals within other wavelength ranges.

[0037] The first optical signal with a wavelength of 1310 nm can be reflected and transmitted on the reflective surface of the first prism coated with the first coating, a portion of the first optical signal can pass through the reflective surface of the first prism coated with the first coating, and pass through the reflective surface of the second prism coated with the second coating, and be transmitted to the optical fiber ferrule 200, and another portion of the first optical signal is reflected to the optical monitor 4. The wavelength of 1550 nm can be reflected on the reflective surface of the second prism coated with the second coating, and thus be projected to the optical receiver 3.

[0038] Further, as a specific implementation in some embodiments of the present utility model, Figures 2 to 5As shown, the lens assembly 5 also includes a third prism 53 and a fourth prism 54. The light emitting surface of the first prism 51 is fitted with the light incident surface of the third prism 53, the reflecting surface of the third prism 53 is perpendicular to the reflecting surface of the first prism 51, and the third prism 53 is used to change the emission direction of the first light signal; the light emitting surface of the second prism 52 is fitted with the light incident surface of the fourth prism 54, the reflecting surface of the fourth prism 54 is parallel to the reflecting surface of the first prism 51, and the fourth prism 54 is used to change the emission direction of the second light signal.

[0039] Specifically, the light emitting surface of the first prism 51 is arranged in contact with the light incident surface of the third prism 53, the reflecting surface of the third prism 53 is perpendicular to the reflecting surface of the first prism 51, and a part of the first light signal is reflected by the reflecting surface of the first prism 51, and the direction after being emitted from the light emitting surface of the first prism 51 is perpendicular to the emission direction of the light emitter 2 ( Figure 5 The X direction in the figure), the emission direction of part of the first optical signal after passing through the third prism 53 is parallel to the emission direction of the optical transmitter 2. The light-emitting surface of the second prism 52 is arranged in contact with the light-entering surface of the fourth prism 54, and the reflection surface of the fourth prism 54 is parallel to the reflection surface of the first prism 51. After the second optical signal is reflected by the reflection surface of the second prism 52, the direction after it is emitted from the light-emitting surface of the second prism 52 is perpendicular to the emission direction of the optical transmitter 2. After passing through the fourth prism 54, the emission direction of the second optical signal is parallel to the emission direction of the optical transmitter 2. Thus, the optical monitor 4, the optical receiver 3 and the optical transmitter 2 can be arranged in parallel on the same mounting plate, making the layout of the entire single-fiber bidirectional transmission optical component 100 more compact, which is conducive to saving space, thereby reducing the size of the single-fiber bidirectional transmission optical component 100.

[0040] Further, as a specific implementation in some embodiments of the present utility model, Figures 2 to 5 As shown, the reflective surface of the third prism 53 is coated with a third coating (not shown), and the third coating can reflect light signals with a first wavelength; the reflective surface of the fourth prism 54 is coated with a fourth coating (not shown), and the fourth coating can reflect light signals with a second wavelength.

[0041] Further, as a specific implementation in some embodiments of the present utility model, Figure 2 , Figure 3 and Figure 5 As shown, the lens assembly 5 further includes a first coupling lens 55 , which is disposed on the light incident surface of the first prism 51 ; the lens assembly 5 further includes a second coupling lens 56 , which is disposed on the light exit surface of the fourth prism 54 .

[0042] Specifically, the first coupling lens 55 is disposed on the light incident surface of the first prism 51 to couple and converge the first optical signal emitted by the optical transmitter 2, which helps to effectively transmit the first optical signal to the first prism 51. The second coupling lens 56 is disposed on the light exit surface of the fourth prism 54 to ensure that all the second optical signals can be coupled and converged to the active area of ​​the optical receiver 3, so that the optical receiver 3 can completely convert the second optical signal into an electrical signal for information reception, effectively reducing the risk of signal distortion.

[0043] Further, as a specific implementation in some embodiments of the present utility model, Figures 2 to 5 As shown, the single-fiber bidirectional transmission optical component 100 also includes a heat-conducting substrate 7, which is arranged on the inner wall of one end of the single-fiber bidirectional transmission optical component 100 away from the interface 121 of the optical fiber ferrule 200, and the optical transmitter 2, the optical receiver 3, the optical monitor 4 and the control module 6 are arranged on the heat-conducting substrate 7.

[0044] Specifically, the optical transmitter 2, the optical receiver 3, the optical monitor 4 and the control module 6 are arranged on the thermally conductive substrate 7, which can facilitate the closer integration between the components, simplify the structure, and reduce the size of the single-fiber bidirectional transmission optical component 100. The thermally conductive substrate 7 can also effectively conduct and disperse the heat generated by the optical transmitter 2, the optical receiver 3, the optical monitor 4 and the control module 6. In addition, the thermally conductive substrate 7 is provided with a gold-plated layer wiring or a gold-plated layer pad, so as to facilitate the positioning and installation of the optical transmitter 2, the optical receiver 3, the optical monitor 4 and the control module 6 on the thermally conductive substrate 7, ensure the installation accuracy, and thus ensure that the first optical signal and the second optical signal can be accurately transmitted.

[0045] Further, as a specific implementation in some embodiments of the present utility model, Figure 4 As shown, the single-fiber bidirectional transmission optical component 100 further includes a temperature measuring component 8 , which is disposed on a heat-conducting substrate 7 and is electrically connected to a control module 6 .

[0046] Specifically, the temperature measuring component 8 can detect the temperature of the optical transmitter 2 in real time, and cooperate with the information of the first optical signal monitored by the optical monitor 4 to enable the control module 6 to more accurately adjust the emission state of the optical transmitter 2, thereby ensuring that the first optical signal emitted by the optical transmitter 2 meets the emission requirements.

[0047] Further, as a specific implementation in some embodiments of the present utility model, Figures 2 to 4 As shown, the single-fiber bidirectional transmission optical component 100 also includes a sealed wave plate 9. An installation cavity 11 is provided in the single-fiber bidirectional transmission optical component 100. The sealed wave plate 9 separates the installation cavity 11 to form a first cavity 111 and a second cavity 112. The optical fiber ferrule 200 is inserted into the first cavity 111, and the lens assembly 5, the optical transmitter 2, the optical receiver 3, the optical monitor 4 and the control module 6 are located in the second cavity 112.

[0048] Specifically, the housing 1 of the single-fiber bidirectional transmission optical component 100 is provided with an optical fiber ferrule 200 interface 121 for connecting the optical fiber ferrule 200 to the single-fiber bidirectional transmission optical component 100. The sealing wave plate 9 separates the installation cavity 11 to form a first cavity 111 and a second cavity 112. The optical fiber ferrule 200 is inserted into the first cavity 111, and the lens assembly 5, the optical transmitter 2, the optical receiver 3, the optical monitor 4 and the control module 6 are located in the second cavity 112. Thus, the sealing wave plate 9 can seal the second cavity 112 to prevent external dust from entering the second cavity 112, and ensure that the optical transmitter 2, the lens assembly 5, the optical transmitter 2, the optical receiver 3, the optical monitor 4 and the control module 6 are not affected by dust and impurities in the external environment.

[0049] More specifically, if Figures 1 to 4 The housing 1 includes a fiber optic ferrule 200 adapter 12, a housing 1 body, and a bottom plate 14. The fiber optic ferrule 200 interface 121 is provided at the top of the fiber optic ferrule 200 adapter 12. A first protrusion 131 is provided at the top of the housing 1 body. The peripheral wall of the fiber optic ferrule 200 adapter 12 abuts against the peripheral wall of the first protrusion 131, so that the fiber optic ferrule 200 adapter 12 can be tightly connected to the housing 1 body. In addition, the first protrusion 131 is provided with a mounting groove 1311, which is a through groove. The lens assembly 5 is installed in the mounting groove to facilitate the installation of the lens assembly 5. The bottom plate 14 is provided with a second protrusion 141, and the peripheral wall of the second protrusion 141 abuts against the peripheral wall of the bottom of the housing 1 body. The sealing wave plate 9, the housing 1 body, and the second protrusion 141 enclose a second cavity 112.

[0050] Further, as a specific implementation in some embodiments of the present utility model, Figures 2 to 4 As shown, anti-reflection films (not shown) are provided on both sides of the sealed wave plate 9.

[0051] Specifically, the first optical signal and the second optical signal are transmitted between the optical fiber core 200 and the lens assembly 5 through the light-transmitting glass. Both sides of the sealing wave plate 9 are coated with anti-reflection film, which can reduce the insertion loss of the light-transmitting glass to the optical signal and ensure the transmission quality of the first optical signal and the second optical signal.

[0052] It should be understood that the above embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit it. For those skilled in the art, the technical solutions described in the above embodiments can be modified, or some of the technical features therein can be replaced by equivalents; and all these modifications and replacements should fall within the scope of protection of the claims attached to the present utility model.

Claims

1. A single-fiber bidirectional transmission optical component, characterized in that: For bidirectional communication via a single fiber optic ferrule, including: An optical transmitter, configured to transmit a first optical signal to the optical fiber ferrule; An optical receiver, used to receive a second optical signal transmitted by the optical fiber ferrule; A light monitor, used to monitor the emission state of the light emitter; a lens assembly, located between the optical fiber ferrule and the optical transmitter, for transmitting part of the first optical signal to the optical fiber ferrule, transmitting another part of the first optical signal to the optical monitor, and transmitting the second optical signal to the optical receiver; The control module is electrically connected to the optical transmitter, the optical receiver and the optical monitor, and is used to control the working state of the optical transmitter.

2. The single-fiber bidirectional transmission optical component according to claim 1, characterized in that: The lens assembly includes a first prism and a second prism, wherein a reflective surface of the first prism and a reflective surface of the second prism are overlapped, and the reflective surface of the first prism is coated with a first coating, and the first coating can transmit and reflect the first optical signal according to a preset ratio, so that a part of the first optical signal can be emitted to the optical fiber ferrule, and another part of the first optical signal can be reflected to the optical monitor; The reflective surface of the second prism is coated with a second coating layer, and the second coating layer is capable of transmitting the first optical signal and reflecting the second optical signal, so as to reflect the second optical signal to the optical receiver.

3. The single-fiber bidirectional transmission optical component according to claim 2, characterized in that: The first optical signal has a first wavelength, the second optical signal has a second wavelength, and the first wavelength and the second wavelength are not equal; The first cladding layer can partially reflect the optical signal having the first wavelength, and the second cladding layer can transmit the optical signal having the first wavelength and reflect the optical signal having the second wavelength.

4. The single-fiber bidirectional transmission optical component according to claim 3, characterized in that: The lens assembly also includes a third prism and a fourth prism, the light-emitting surface of the first prism is fitted with the light-incident surface of the third prism, the reflection surface of the third prism is perpendicular to the reflection surface of the first prism, and the third prism is used to change the emission direction of the first light signal; the light-emitting surface of the second prism is fitted with the light-incident surface of the fourth prism, the reflection surface of the fourth prism is parallel to the reflection surface of the first prism, and the fourth prism is used to change the emission direction of the second light signal.

5. The single-fiber bidirectional transmission optical component according to claim 4, characterized in that: The reflective surface of the third prism is coated with a third coating layer, and the third coating layer is capable of reflecting the optical signal having the first wavelength; The reflective surface of the fourth prism is coated with a fourth coating layer, and the fourth coating layer can reflect the optical signal with the second wavelength.

6. The single-fiber bidirectional transmission optical component according to claim 4, characterized in that: The lens assembly further includes a first coupling lens, and the first coupling lens is disposed on the light incident surface of the first prism; The lens assembly further includes a second coupling lens, and the second coupling lens is arranged on the light-emitting surface of the fourth prism.

7. The single-fiber bidirectional transmission optical component according to claim 1, characterized in that: It also includes a heat-conducting substrate, which is arranged on the inner wall of one end of the single-fiber bidirectional transmission optical component away from the optical fiber core interface, and the optical transmitter, the optical receiver, the optical monitor and the control module are arranged on the heat-conducting substrate.

8. The single-fiber bidirectional transmission optical component according to claim 7, characterized in that: It also includes a temperature measuring component, which is arranged on the heat-conducting substrate and is electrically connected to the control module.

9. The single-fiber bidirectional transmission optical component according to any one of claims 1 to 8, characterized in that: It also includes a sealed wave plate. An installation cavity is provided in the single-fiber bidirectional transmission optical component. The sealed wave plate separates the installation cavity to form a first cavity and a second cavity. The optical fiber core is inserted into the first cavity. The lens assembly, the optical transmitter, the optical receiver, the optical monitor and the control module are located in the second cavity.

10. The single-fiber bidirectional transmission optical component according to claim 9, characterized in that: Anti-reflection films are provided on both sides of the sealed wave plate.

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