Multi-channel reflected light signal transmission module
By combining 1×N beam splitters and N circulators, the problems of complex optical paths and difficult maintenance in optical measurement systems are solved, achieving miniaturization and convenient maintenance, and improving the reliability and measurement efficiency of fiber optic sensing systems.
Patent Information
- Application Number
- CN202422774578.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-14
AI Technical Summary
In grating optical measurement systems, the need for multi-channel measurement leads to complex optical paths, fiber entanglement, difficult splicing, high maintenance costs, and fragile and easily damaged optical fibers. Existing technologies make it difficult to achieve miniaturization and convenient maintenance.
The design employs a combination of 1×N optical splitters and N circulators, connecting optical fibers through tapered fusion splicing to form a multi-channel reflected optical signal transmission module. There are no melting points between the components, and the module is fixed and packaged with screws, achieving miniaturization and detachability.
The module achieves miniaturization of multi-channel optical measurement, reducing maintenance costs, improving measurement efficiency and space utilization, enhancing module reliability, and facilitating on-site operation.
Smart Images
Figure CN223525812U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to optical fiber sensing measurement technical field, concretely relates to a kind of multi-channel reflected light signal transmission module. BACKGROUND
[0002] In actual grating optical measurement system, with the complex field environment, the increase of the number of channels and measuring points of light path, from single-channel to multi-channel measurement demand, a system measures hundreds of measuring points to become normal, it will often exist in some channel damage, need to temporarily increase a light channel, this requirement often accompanied by need engineer to carry out on-site light fusion, operation is more difficult.Because of the complexity of light path in practice, multiple grating measuring points, multiple channels, each optical fiber winding, multiple optical fiber fusion points, on-site fusion machine is inconvenient to operate, etc., each light path signal needs to be output separately and connected to an optical detector for separate measurement, and each channel does not interfere with each other.Commonly, optical fibers are relatively fragile, and in the actual construction of optical modules, in order to reduce the structure size, each part of the optical fiber needs to be manually fused together, which can cause the fusion point to be weak and the length to be different, which can easily be damaged and other problems.At present, the common method is to paste a bunch of fusion points together, and to paste the fusion points together by hand, which can cause inconvenience in the test environment and face the problem of high maintenance cost if a light path is damaged. SUMMARY
[0003] Therefore, the utility model provides a kind of multi-channel reflected light signal transmission module, can realize miniaturization and low cost, and it is convenient to measure and repair, meet engineering needs.
[0004] To achieve the above object, the utility model technical scheme is as follows:
[0005] A multi-channel reflected light signal transmission module includes N circulators and N optical splitters connected to one optical fiber; the 1xN optical splitter is connected to one optical fiber by pulling and fusing, and one incident light becomes N light paths; the 1 port of the N circulators is directly pulled and fused, and N optical fibers are fused into one, and one incident light forms N light paths; the N 1 ports form an optical splitter, and each path has two ports of the circulator.
[0006] The circulator includes a 1 port, a 2 port and a 3 port; the 1 port is the incident light, the 2 port is the output light, and the 3 port is the reflected light; the entire light path of the circulator is unidirectional and irreversible; the incident light of the 1 port is output through the 2 port and connected to the grating, and the reflected light from the 2 port through the grating is output through the 3 port; and the output light of the 3 port is finally collected.
[0007] The 1xN optical splitter is connected with each 1 port of the N optical circulators, 1 1 port input, N 2 port outputs, and N 3 port returns are achieved, the output end is connected with a measurement grating, each 2 port and 3 port do not affect each other, and real-time return collection data is achieved in multi-channel grating measurement.
[0008] The optical splitter and the optical circulator are packaged, screw holes are arranged on the packaging shell of the optical splitter and the optical circulator, and the packaged optical splitter and the optical circulator are fixed through screws.
[0009] The ports are FC or APC interfaces, and a multi-channel optical fiber sensing system is formed, and there is no fusion point between the devices in the system, and the devices can be disassembled.
[0010] The 1x8 optical splitter is packaged to obtain a 100mmx80mmx10mm size optical reflection signal transmission module, and the module includes 4 ports to 20 ports. The 4 ports are 8-channel incident light interfaces connected with a wide spectrum sweep light source. The 5, 7, 9, 11, 13, 15, 17 and 19 ports are 8-channel output light interfaces connected with a grating. The 6, 8, 10, 12, 14, 16, 18 and 20 ports are 8-channel reflected light interfaces connected with a photoelectric detector.
[0011] Advantages:
[0012] 1. The module of the utility model includes a sweep light source, an optical splitter and an optical circulator, 1 incident light is decomposed into multiple output lights and reflected lights which do not affect each other, and the module is convenient to disassemble and install in an optical fiber sensing engineering system, and is used for solving problems such as large optical system structure volume, high maintenance cost, internal optical fiber entanglement and difficult fusion, is used for real-time measurement by reflected light signal collection, and is applied to an optical signal measurement field such as optical fiber sensing as a small optical module.
[0013] 2. The utility model is a 1xN optical reflection signal transmission module, the optical circulator and the optical splitter are integrated together, a small size optical module is formed, problems such as difficult optical system construction on site are solved, space utilization is improved, optical path damage caused by human factors is reduced, measurement efficiency is improved, engineering is simplified, and the problem of complex optical path in optical fiber sensing practical engineering application is solved.
[0014] 3. In the utility model, there is no fusion point between the devices of the multi-channel optical fiber sensing system, and the devices can be disassembled at any time.
[0015] 4. In the utility model, the 1 ports of the 8 optical circulators are directly pulled and tapered, the optical circulator and the optical splitter are connected on one optical fiber, the optical fiber winding length and device arrangement volume in the whole module are greatly reduced, there is no fusion point at the connection, the reliability of the module is enhanced, and the module can be disassembled at any time and is convenient for on-site operation. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 It is a schematic diagram of the circulator in the utility model.
[0017] Figure 2 It is a schematic diagram of the 1x8 optical splitter in the utility model embodiment.
[0018] Figure 3 It is a schematic diagram of the 1 port of the 8 circulators directly performing the taper fusion in the utility model embodiment.
[0019] Figure 4 It is a front view of the optical reflection signal transmission module after the optical splitter and the circulator are packaged in the utility model embodiment.
[0020] Figure 5 It is a side view of the optical reflection signal transmission module after the optical splitter and the circulator are packaged in the utility model embodiment.
[0021] Figure 6 It is a schematic diagram of the 8 multi-channel optical fiber sensing system in the utility model embodiment. DETAILED DESCRIPTION
[0022] The utility model is described in detail below in combination with the drawings and embodiments.
[0023] The utility model provides a kind of multi-channel reflected light signal transmission module, specifically 1xN optical reflection signal transmission module, circulator and optical splitter are integrated together to form, solve artificial field construction optical system difficult problem, improve space utilization, reduce the optical path damage caused by human factor, to improve measurement efficiency and simplify engineering.It is specifically, circulator in the utility model as shown in Figure 1 Port 1, port 2 and port 3;Wherein port 1 is incident light, port 2 is output light, and port 3 is reflected light.Circulator entire optical path is unidirectional, irreversible, the light signal of port 1 incident light, is connected with grating by port 2 output, the light reflected by grating of port 2 is output by port 3, finally the output light of port 3 is collected, optical path direction is along port 1→port 2, port 2→port 3 can pass through, port 1→port 3, port 3→port 1, port 2→port 1, port 3→port 2 are not passable.The multi-channel reflected light signal transmission module of the application, 1xN optical splitter is connected with each 1 port of N optical circulator, reaches 1 port input, N port 2 output end, is connected with measurement grating by output end, N port 3 return end, each port 2 and port 3 do not affect each other, and real-time return collection data in multi-channel grating measurement.
[0024] As shown in Figure 2As shown in the 1x8 optical splitter, the 1x8 optical splitter is fused to one optical fiber by the pulling and fusing of the pulling and tapering mode, and one incident light becomes eight; according to the principle of the optical splitter, the 1 port of the eight circulators is directly pulled and fused, and the eight optical fibers become one, at this time one incident light becomes eight; the eight 1 ports form an optical splitter, and each port has circulators 2 and 3 two ports, so that the eight circulators not only have the function of splitting light but also have the function of receiving return signals, such as Figure 3 The circulator and the optical splitter are connected on one optical fiber, which greatly reduces the length of the optical fiber winding and the volume of the device arrangement in the entire module, and there is no fusion point at the connection, which enhances the reliability of the module. The module can be disassembled at any time, which is convenient for on-site operation.
[0025] Further, the optical splitter and the circulator are packaged and designed to obtain an optical reflection signal transmission module with a size of 100mmx80mmx10mm as shown in Figure 4 and Figure 5 The module includes 4 to 20 ports. The 4 ports are 8-channel incident light interfaces connected with a wide-spectrum swept light source; the 5, 7, 9, 11, 13, 15, 17 and 19 ports are 8-channel output light interfaces connected with a grating; the 6, 8, 10, 12, 14, 16, 18 and 20 ports are 8-channel reflected light interfaces connected with a photodetector, each port is an FC or APC interface, and an 8 multi-channel optical fiber sensing system is formed as shown in Figure 6 There is no fusion point between the devices in the system, and the system can be disassembled at any time.
[0026] Further, the packaging shell of the optical splitter and the circulator is provided with a threaded hole, and the packaged optical splitter and the circulator are fixed by a screw.
[0027] In summary, the above is only a preferred embodiment of the present application, and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.
Claims
1. A multi-channel reflected light signal transmission module, characterized by, The application relates to an optical fiber sensor system, which comprises N circulators and N splitters connected to one optical fiber; wherein the 1*N splitter connects N optical fibers to one optical fiber by a fusion splicing method, and one incident light becomes N lights; the 1 port of the N circulators is directly fused by a tapering method, and N optical fibers are fused into one optical fiber, and one incident light becomes N lights; the N 1 ports form a splitter, and each port has two ports of the circulators.
2. The transmission module of claim 1, wherein, The circulator comprises a 1 port, a 2 port and a 3 port; wherein the 1 port is an incident light, the 2 port is an output light, and the 3 port is a reflected light; the whole optical path of the circulator is unidirectional and irreversible; the light signal of the 1 port is incident light, which is output through the 2 port and connected with a grating; the reflected light of the 2 port is output through the 3 port; finally, the output light of the 3 port is collected.
3. The transmission module of claim 2, wherein The 1*N splitter is connected with each 1 port of the N circulators, so that one 1 port input, N 2 port outputs and N 3 port return ends are formed; the output end is connected with a measurement grating; each 2 port and 3 port does not affect each other; in the multi-channel grating measurement, real-time return and collection data are achieved.
4. The transport module of any of claims 1-3, wherein The splitter and the circulator are packaged; the packaging shell of the splitter and the circulator is provided with screw holes, and the packaged splitter and circulator are fixed by screws.
5. The transport module of claim 4, wherein Each port is an FC or APC interface, and a multi-channel optical fiber sensing system is formed; there is no fusion point between the devices in the system, and each device can be disassembled.
6. The transport module of any of claims 1-3 and 5, wherein, An optical reflection signal transmission module with a size of 100mm*80mm*10mm is obtained by packaging a 1*8 splitter, and the module comprises 4 ports to 20 ports; the 4 ports are 8-channel incident light interfaces connected with a wide-spectrum sweep light source; the 5, 7, 9, 11, 13, 15, 17 and 19 ports are 8-channel output light interfaces connected with gratings; and the 6, 8, 10, 12, 14, 16, 18 and 20 ports are 8-channel reflected light interfaces connected with photoelectric detectors.