Optical time domain reflectometer integrated device with receiving and transmitting integrated optical assembly

Abstract

The invention relates to the technical field of time domain reflectometer integration, in particular to an optical time domain reflectometer integration device with a transceiving integrated optical component, which comprises a base and an optical transmitting component mounted at one end of the base, an optical receiving component is mounted at the top of the base, and a lens is mounted in an adapter. An optical fiber connecting port is arranged in the adapter, an optical fiber body penetrating through the lens is installed in the adapter, one end of the optical fiber body is connected with an SC optical fiber connector, a 0-degree filter is installed in the base, a 45-degree filter is installed in the base, and the optical fiber connector is connected with the SC optical fiber connector. An isolator opposite to the reflector plate is mounted in the base; the light receiving assembly and the light emitting assembly are coupled with the base to form a one-transmitting and one-receiving light receiving and transmitting assembly, the light receiving and transmitting assembly, the isolator and the optical fiber connecting port form a wave combining channel capable of completing transmission of light with the wavelengths of 1310 nm, 1270 nm, 1490 nm and 1577 nm, parallel light transmission is guaranteed, and a stable parallel light link is formed for transmission of light signals.

Description

Technical Field

[0001] The present invention relates to the technical field of optical time domain reflectometer integration, and in particular to an optical time domain reflectometer integrated device with an integrated transceiver optical component. Background Art

[0002] Optical Time Domain Reflectometer, or OTDR for short, is an instrument that analyzes the measurement curve to understand the uniformity, defects, breaks, joint coupling and other properties of optical fibers. It is made based on the backscattering of light and the Fresnel reverse principle, and uses the backscattered light generated when light propagates in the optical fiber to obtain attenuation information. It can be used to measure optical fiber attenuation, joint loss, locate optical fiber fault points, and understand the loss distribution along the length of the optical fiber. It is an indispensable tool in optical cable construction, maintenance and monitoring.

[0003] However, in order to ensure the smooth operation and safety of optical fiber communications, optical time domain reflectometers using backscattering as measurement signals are currently used on the market, but they require technicians to use dedicated OTDRs and supporting test equipment for detection; OTDR is a monitoring module independent of the 25G BiDi optical module, and its size is too large, occupying a large space in the equipment room; and the optical lines used in the test are prone to damage, resulting in unnecessary waste of wires and complicated test operations; at the same time, the communication system is slow to repair and takes a long time. Summary of the invention

[0004] In view of the problems in the prior art, the present invention provides an integrated optical time domain reflectometer device with an integrated transceiver optical component.

[0005] The technical solution adopted by the present invention to solve its technical problems is: an optical time domain reflectometer integrated device with an integrated transceiver optical component, comprising a base, an optical transmitting component installed at one end of the base, a light receiving component installed on the top of the base, an adapter connected to the end of the base away from the optical transmitting component, a lens installed inside the adapter, an optical fiber connection port is provided inside the adapter, an optical fiber body passing through the lens is installed inside the adapter, one end of the optical fiber body is connected to an SC optical fiber connector, a 0° filter is installed inside the base, a 45° filter is installed inside the base, a reflector is installed at the optical fiber connection port, and an isolator opposite to the reflector is installed inside the base.

[0006] Specifically, the 45° filter is located below the 0° filter, and the 45° filter is flush with the top and bottom of the reflector.

[0007] Specifically, the optical emission component is composed of GND / PD+, LD-, LD+ and PD- to form a pin emission end, and the optical emission component and the isolator are arranged in parallel.

[0008] Specifically, the optical receiving component is composed of GND, D+, Vcc, Vapd and D- to form a pin receiving end, and the optical receiving component is arranged opposite to the 0° filter.

[0009] Specifically, a metal shell is provided between the adapter and the SC optical fiber connector, and the metal shell is sleeved on the outer side of the optical fiber body.

[0010] Specifically, the light emitting component and the light receiving component are arranged vertically, and the light emitting component and the adapter are arranged oppositely.

[0011] Specifically, a hole is provided at the center of the isolator, and the isolator is in a circular ring structure.

[0012] Specifically, the center of the isolator and the center of the reflector are located on the same straight line, and the reflector is in a rectangular structure.

[0013] The beneficial effects of the present invention are:

[0014] (1) The optical time domain reflectometer integrated device with an integrated transceiver optical component described in the present invention converts an external optical signal into parallel light by injecting it into a lens through an optical fiber body insert with an SC connector, and then enters the base accommodating cavity through a reflector. The required wavelength light is filtered twice by a 45° filter aligned with the reflector and a 0° filter under the optical receiving component to retain the required wavelength light. The wavelength light passing through will be received by the detection chip of the optical receiving component to complete the optical signal reception work; the optical receiving component and the optical transmitting component are coupled with the base to form a one-transmitter and one-receiver optical transceiver component, and together with the isolator and the optical fiber connection port, a wavelength combining channel that can complete the transmission of 1310nm, 1270nm, 1490nm and 1577nm wavelength light is formed, thereby ensuring parallel light transmission and forming a stable parallel optical link for optical signal transmission; based on the coaxial coupling of ordinary TOSA and ROSA into BOSA, an OTDR optical component that utilizes the backscattering principle and is suitable for the requirements of optical fiber diagnosis is integrated, with a built-in miniaturized embedded OTDR BOSA, and a high stability 1270nm and 1310nm design. MQW-DFB laser, with built-in GaInAs / InP display photodiode, has automatic fault detection and fault finding functions, which will save the supplier maintenance and door-to-door service expenses.

[0015] (2) The optical time domain reflectometer integrated device with an integrated optical transceiver assembly described in the present invention closely links the product technology with the miniaturized embedded OTDR optical assembly monitoring technology, and provides an OTDR integrated solution for the integrated optical transceiver assembly BOSA; the optical device of the built-in OTDR optical assembly with automatic fault detection and fault finding functions solves the disadvantages and expensive costs of the complex solution that requires the use of a dedicated OTDR and supporting equipment for testing; the built-in OTDR optical communication products on the market only include hardware units such as drive and sampling, and the key product functions require secondary in-depth processing during integration, while the embodiments of the present application can directly use the data to perform real-time scanning and monitoring of the optical fiber status without affecting the optical communication system business, thereby realizing the visualization of the optical fiber. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the connection structure of the adapter, the optical fiber body and the SC optical fiber connector of the present invention;

[0019] Figure 3 It is a schematic diagram of the connection structure of the adapter, the base and the light receiving component of the present invention;

[0020] Figure 4 It is a schematic diagram of the connection structure of the base, the 0° filter and the 45° filter of the present invention;

[0021] Figure 5 It is a schematic diagram of the connection structure of the base, the reflector, the adapter of the isolator, the light receiving component and the light emitting component of the present invention.

[0022] In the figure: 1. base; 2. adapter; 3. isolator; 4. reflector; 5. light emitting component; 6. light receiving component; 7. optical fiber body; 8. SC optical fiber connector; 9. lens; 10. optical fiber connection port; 11. 45° filter; 12. 0° filter; 13. metal casing. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0024] like Figure 1-Figure 5As shown, an optical time domain reflectometer integrated device with an integrated transceiver optical component described in the present invention includes a base 1, an optical transmitting component 5 installed at one end of the base 1, the optical transmitting component 5 is composed of GND / PD+, LD-, LD+ and PD- to form a 4-pin transmitting end, and the optical transmitting component 5 is arranged in parallel with the isolator 3; the isolator 3 and the optical transmitting component 5 are parallel to each other to prevent serious jitter of the eye diagram, and a parallel optical link is formed between the isolator 3, the optical fiber connection port 10 and the adapter 2. The divergent light of the optical transmitting component 5 is converged into parallel light through the isolator 3, and optical signal transmission is performed in the parallel optical link. After being filtered by a 45° filter 11, it reaches the reflector 4 at the optical fiber connection port 10, and the optical signal is transmitted through a lens 9 and an optical fiber body 7 with an SC connector 8.

[0025] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, a light receiving component 6 is installed on the top of the base 1. The light receiving component 6 is composed of GND, D+, Vcc, Vapd and D- to form a 5-pin receiving end. The light receiving component 6 is arranged opposite to the 0° filter 12; the 0° filter 12 and the 45° filter 11 under the light receiving component 6 can filter the required wavelength light, and the reflector 4 at the optical fiber connection port 10 filters out the 1610nm wavelength light, so that it cannot enter the accommodating cavity of the base 1, which plays a key role in the realization of OTDR technology in the light receiving component 6 and the light transmitting component 5.

[0026] Specifically, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, the end of the base 1 facing away from the optical emitting component 5 is connected to an adapter 2, a lens 9 is installed inside the adapter 2, an optical fiber connection port 10 is provided inside the adapter 2, an optical fiber body 7 penetrating the lens 9 is installed inside the adapter 2, an SC optical fiber connector 8 is connected to one end of the optical fiber body 7, a 0° filter 12 is installed inside the base 1, a 45° filter 11 is installed inside the base 1, a reflector 4 is installed at the optical fiber connection port 10, and an isolator 3 opposite to the reflector 4 is installed inside the base 1; the 45° filter 11 is located below the 0° filter 12, and the 45° filter 11 is flush with the top and bottom of the reflector 4; a metal shell 13 is provided between the adapter 2 and the SC optical fiber connector 8, and the metal shell 13 is sleeved on the outside of the optical fiber body 7; the optical emitting component 5 and the optical receiving component 6 are vertically arranged, and the optical emitting component 5 is arranged opposite to the adapter 2; the A hole is provided at the center of the isolator 3, and the isolator 3 is in a circular ring structure; the center of the isolator 3 is located on the same straight line as the center of the reflector 4, and the reflector 4 is in a rectangular structure; the external optical signal is injected into the lens 9 through the optical fiber body 7 with the SC connector 8 to transform the parallel light into the shuttle in the optical component, and then enters the accommodating cavity of the base 1 through the reflector 4, and is filtered twice by the 45° filter 11 aligned with the reflector 4 and the 0° filter 12 under the optical receiving component 6 to retain the required wavelength light, and the wavelength light passing through will be received by the detection chip of the optical receiving component 6 to complete the optical signal reception work; the optical receiving component 6 and the optical transmitting component 5 are coupled with the base 1 to form a one-transmitting and one-receiving optical transceiver component, and form a combined channel that can complete the transmission of 1310nm, 1270nm, 1490nm and 1577nm wavelength light with the isolator 3 and the optical fiber connection port 10, ensuring parallel light transmission and forming a stable parallel optical link for optical signal transmission.

[0027] When the present invention is used, first, the external optical signal is injected into the lens 9 through the optical fiber body 7 with the SC connector 8, and converted into parallel light to shuttle in the optical component, and then enters the accommodating cavity of the base 1 through the reflector 4, and is filtered twice by the 45° filter 11 aligned with the reflector 4 and the 0° filter 12 under the optical receiving component 6 to retain the required wavelength light, and the wavelength light passing through will be received by the detection chip of the optical receiving component 6, completing the optical signal reception work;

[0028] Then, the isolator 3 is parallel to the optical emitting component 5 to prevent serious jitter of the eye diagram. A parallel optical link is formed between the isolator 3, the optical fiber connection port 10 and the adapter 2. The divergent light of the optical emitting component 5 is converged into parallel light through the isolator 3, and the optical signal is transmitted in the parallel optical link. After being filtered by the 45° filter 11, it reaches the reflector 4 at the optical fiber connection port 10, and transmits the optical signal through the lens 9 and the optical fiber body 7 with the SC connector 8; the 0° filter 12 and the 45° filter 11 under the optical receiving component 6 can filter the required wavelength light, and the optical fiber connection port The reflector 4 at 10 filters out the 1610nm wavelength light, so that it cannot enter the accommodating cavity of the base 1, which plays a key role in the realization of OTDR technology in the optical receiving component 6 and the optical transmitting component 5; the optical receiving component 6 and the optical transmitting component 5 are coupled with the base 1 to form a one-transmitting and one-receiving optical transceiver component, and form a combined channel with the isolator 3 and the optical fiber connection port 10 to complete the 1310nm, 1270nm, 1490nm and 1577nm wavelength optical transmission, ensuring parallel optical transmission and forming a stable parallel optical link for optical signal transmission;

[0029] Finally, the present application provides a method of combining the OTDR optical fiber network monitoring system with the 1G, 10G EPON BOSA product technology, implementing the embedded OTDR of the miniaturized product, realizing the online optical channel monitoring function and the optical time domain reflection detection function simultaneously, accurately locating the optical fiber fault in the DWDM system, and building the OTDR function into the 1G / 10G EPON BOSA; on the basis of the ordinary TOSA, ROSA coaxial coupling into BOSA, it integrates the OTDR optical component integrated by the backscattering principle and the requirements for optical fiber diagnosis, and has a built-in miniaturized embedded OTDR. BOSA is designed with high-stability 1270nm and 1310nm MQW-DFB lasers and built-in GaInAs / InP display photodiodes. It has automatic fault detection and fault finding functions, which will save the supplier's maintenance and door-to-door service expenses. The built-in OTDR optical communication products on the market only include hardware units such as drive and sampling, and the key product functions require secondary deep processing during integration. The embodiments of the present application can directly use the data to perform real-time scanning and monitoring of the optical fiber status without affecting the optical communication system business, thereby realizing the visualization of the optical fiber.

[0030] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0031] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An integrated optical time domain reflectometer device with an integrated transceiver optical component, characterized in that: The invention comprises a base (1), an optical transmitting component (5) installed at one end of the base (1), an optical receiving component (6) installed at the top of the base (1), an adapter (2) connected to the end of the base (1) away from the optical transmitting component (5), a lens (9) installed inside the adapter (2), an optical fiber connection port (10) provided inside the adapter (2), an optical fiber body (7) penetrating the lens (9) installed inside the adapter (2), an SC optical fiber connector (8) connected to one end of the optical fiber body (7), a 0° filter (12) installed inside the base (1), a 45° filter (11) installed inside the base (1), a reflector (4) installed at the optical fiber connection port (10), and an isolator (3) opposite to the reflector (4) installed inside the base (1).

2. The optical time domain reflectometer integrated device with a transceiver integrated optical component according to claim 1, characterized in that: The 45° filter (11) is located below the 0° filter (12), and the 45° filter (11) is flush with the top and bottom of the reflective sheet (4).

3. The optical time domain reflectometer integrated device with a transceiver integrated optical component according to claim 1, characterized in that: The optical emission component (5) is composed of GND / PD+, LD-, LD+ and PD- to form a 4-pin emission end, and the optical emission component (5) and the isolator (3) are arranged in parallel.

4. The optical time domain reflectometer integrated device with a transceiver integrated optical component according to claim 1, characterized in that: The optical receiving component (6) is composed of GND, D+, Vcc, Vapd and D- to form a 5-pin receiving end, and the optical receiving component (6) is arranged opposite to the 0° filter (12).

5. The optical time domain reflectometer integrated device with a transceiver integrated optical component according to claim 1, characterized in that: A metal shell (13) is provided between the adapter (2) and the SC optical fiber connector (8), and the metal shell (13) is sleeved on the outside of the optical fiber body (7).

6. The optical time domain reflectometer integrated device with a transceiver integrated optical component according to claim 1, characterized in that: The light emitting component (5) and the light receiving component (6) are arranged vertically, and the light emitting component (5) and the adapter (2) are arranged opposite to each other.

7. The optical time domain reflectometer integrated device with a transceiver integrated optical component according to claim 1, characterized in that: A hole is provided at the center of the isolator (3), and the isolator (3) is in a circular ring structure.

8. The optical time domain reflectometer integrated device with a transceiver integrated optical component according to claim 1, characterized in that: The center of the isolator (3) and the center of the reflector (4) are located on the same straight line, and the reflector (4) has a rectangular structure.

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