1-way multi-circulator array system

Abstract

The present invention discloses a 1-way multi-channel circulator array system, including a polarization component, a 1-way multi-channel optical fiber collimation component, a first multi-channel optical fiber collimation component, a second multi-channel optical fiber collimation component and an optical rotation component; the 1-way multi-channel optical fiber collimation component is used to divide a single-channel signal light into multiple channels of signal light; the polarization component can transmit P-polarized signal light and transmit it to the optical rotation component, the optical rotation component receives the forward input P-polarized signal light and inputs the signal light into the first multi-channel optical fiber collimation component; the optical rotation component can convert the reverse input P-polarized signal light received by the first multi-channel optical fiber collimation component into S-polarized signal light and transmit it to the polarization component, the polarization component can fully reflect the S-polarized signal light and input it into the second multi-channel optical fiber collimation component. The present invention includes at least the following advantages: it can realize the function of dividing a single-channel P-polarized signal light from 1 channel into 8 channels, and outputting the 8-channel signal light array.

Description

Technical Field

[0001] The invention relates to the field of optical technology, in particular to a one-way multi-path circulator array system. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] Fiber circulator is a unidirectional device that can guide signal light from one port to another port, and only transmits in one direction at a time. For example, if the signal is input from port 1, it will be output from port 2; if the signal is output from port 2, it will be output from port 3. Among them, fiber circulator can also realize bidirectional transmission on one optical fiber, and is commonly used in laser radar, active electronic scanning antenna (AESA) array, satellite communication and optical communication dense wavelength division multiplexing system, two-way communication system, dispersion compensation, EDFA application and optical time domain reflectometry (OTDR) technology measurement and other fields.

[0004] As communication technology enters the 5G era, the number of channels of 5G key technology Massive MIMO (Multi Input MultiOutput) will double. The demand for fiber circulators will increase significantly with the application of Massive MIMO, and the requirements for their arraying and integration will also increase accordingly.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0006] In order to overcome the defects in the prior art, an embodiment of the present invention provides a 1-to-multi-path circulator array system, which can simultaneously realize the functions of splitting a single-path P-polarization state signal light from 1 path into 8 paths, and array output of the 8-path signal light.

[0007] The embodiment of the present application discloses: a 1-way multi-channel circulator array system, comprising a polarization component, a 1-way multi-channel optical fiber collimation component, a first multi-channel optical fiber collimation component, a second multi-channel optical fiber collimation component and an optical rotation component;

[0008] The one-way multi-channel optical fiber collimation component, the first multi-channel optical fiber collimation component and the second multi-channel optical fiber collimation component are respectively arranged corresponding to the polarization component, wherein the one-way multi-channel optical fiber collimation component and the first multi-channel optical fiber collimation component are respectively arranged on opposite sides of the polarization component;

[0009] The optical rotation component is arranged between the polarization component and the first multi-path optical fiber collimation component;

[0010] The one-to-multi-path optical fiber collimation assembly is used to split a single-path P-polarization state signal light into multiple-path P-polarization state signal lights;

[0011] The first multi-channel optical fiber collimation component is capable of receiving the first signal light which is input in the forward direction through the 1-channel multi-channel optical fiber collimation component, the polarization component, and the optical rotation component respectively;

[0012] The optical rotation component can transmit the reverse input second signal light from the polarization component to the second multi-path collimation component.

[0013] Furthermore, the polarization component includes a polarization beam splitter prism formed by two right-angle prisms, and an interference film layer is arranged on the inclined surfaces of the two right-angle prisms that are attached to each other, so as to be able to transmit P-polarization state signal light and totally reflect S-polarization state signal light.

[0014] Furthermore, the 1-way multi-channel optical fiber collimation component is composed of a polarization-maintaining single-core optical fiber pigtail, a splitter chip and a first 8-channel lens array, wherein the polarization-maintaining single-core optical fiber pigtail and the first 8-channel lens array are respectively arranged on both sides of the splitter chip and are optically coupled to the splitter chip respectively, wherein the first 8-channel lens array is located between the splitter chip and the polarization component.

[0015] Furthermore, the first multi-channel optical fiber collimation component is composed of a first 8-channel polarization-maintaining optical fiber array and a second 8-channel lens array optically coupled, wherein the second 8-channel lens array is located between the first 8-channel polarization-maintaining optical fiber array and the optical rotation component.

[0016] Furthermore, the second multi-channel optical fiber collimation assembly is composed of a second 8-channel polarization-maintaining optical fiber array and a third 8-channel lens array optically coupled, wherein the third 8-channel lens array is located between the second 8-channel polarization-maintaining optical fiber array and the polarization assembly.

[0017] Furthermore, the optical rotation component includes a quarter wave plate, a Faraday rotator and a magnetic ring arranged at intervals, so that the polarization state of the optical signal passing through the optical rotation component in the forward direction is maintained, and the polarization state of the optical signal passing through the optical rotation component in the reverse direction is rotated by 90°.

[0018] Furthermore, the interval between two adjacent channels of the first 8-channel lens array, the interval between two adjacent channels of the second 8-channel lens array, and the interval between two adjacent channels of the third 8-channel lens array are all 0.5 or 0.75 mm.

[0019] Furthermore, the polarization component, the 1-way multi-channel optical fiber collimation component, the first multi-channel optical fiber collimation component, the second multi-channel optical fiber collimation component and the optical rotation component are glued on the substrate by optical glue.

[0020] Furthermore, the first optical path is formed along the signal light transmission direction by the 1-way multi-channel optical fiber collimation component, polarization component, optical rotation component and the first multi-channel optical fiber collimation component; the second optical path is formed along the signal light transmission direction by the first multi-channel optical fiber collimation component, optical rotation component, polarization component and the second multi-channel optical fiber collimation component, wherein the amplitude and frequency of the signal light in the first optical path are different from the amplitude and frequency of the signal light in the second optical path.

[0021] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0022] 1. In the present application, the first optical path is set up, and the first optical path is formed by a 1-to-8 optical fiber collimation component, a polarization component, an optical rotation component and a first multi-channel optical fiber collimation component along the signal light transmission direction, thereby enabling a single-channel P-polarization state signal light to be divided into 8 channels from 1 channel and effectively output;

[0023] 2. In the present application, a second optical path is set up, and the second optical path is formed by a first multi-channel optical fiber collimation component, an optical rotation component, a polarization component and a second multi-channel optical fiber collimation component along the signal light transmission direction, thereby realizing the function of array output of 8-channel signal light.

[0024] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 is a schematic diagram of the overall device structure in an embodiment of the present invention;

[0027] Figure 2 is a schematic structural diagram of the overall device in an embodiment of the present invention in a first optical path;

[0028] Figure 3 is a schematic structural diagram of the overall device in an embodiment of the present invention being in the second optical path;

[0029] Figure 4is a schematic structural diagram of a first multi-channel optical fiber collimation assembly in an embodiment of the present invention;

[0030] Figure 5 is a schematic structural diagram of a second multi-channel optical fiber collimation assembly in an embodiment of the present invention;

[0031] Figure 6 Schematic diagram of the structure of the optical rotation component in the embodiment of the present invention.

[0032] The figure marks of the above drawings are: 1. Polarization component; 2. First multi-channel optical fiber collimation component; 3. Second multi-channel optical fiber collimation component; 4. Optical rotation component; 5. Polarization-maintaining single-core optical fiber pigtail; 6. Splitter chip; 7. First 8-channel lens array; 8. Substrate; 21. First 8-channel polarization-maintaining optical fiber array; 22. Second 8-channel lens array; 31. Second 8-channel polarization-maintaining optical fiber array; 32. Third 8-channel lens array; 41. 1 / 4 wave plate; 42. Faraday rotator; 43. Magnetic ring. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0035] Combination Figure 1 As shown, this embodiment discloses a 1-way multi-channel circulator array system, including a polarization component 1, a 1-way multi-channel optical fiber collimation component, a first multi-channel optical fiber collimation component 2, a second multi-channel optical fiber collimation component 3, an optical rotation component 4 and a substrate 8, wherein the above-mentioned multiple components are all glued to the substrate 8 by optical glue.

[0036] In this embodiment, the polarization component 1 includes a polarization beam splitter formed by two right-angle prisms, and an interference film layer is provided on the inclined surfaces of the two right-angle prisms that are attached to each other, so as to be able to transmit the P polarization state signal light and fully reflect the S polarization state signal light. Among them, the interference film layer can be provided with multiple layers according to actual needs. Specifically, in one state, the polarization component 1 can transmit the polarization state signal light and transmit it to the optical rotation component 4; in another state, the polarization component 1 can fully reflect the S polarization state signal light and input it into the second multi-path optical fiber collimation component 3.

[0037] Combination Figure 6 As shown, in this embodiment, the optical rotation component 4 includes a quarter wave plate 41, a Faraday rotator 42 and a magnetic ring 43 arranged at intervals, so that the polarization state of the optical signal passing through the optical rotation component 4 in the forward direction is maintained, and the polarization state of the optical signal passing through the optical rotation component 4 in the reverse direction is rotated by 90°. Specifically, the magnetic ring 43 is in the shape of a hollow cylinder, and the quarter wave plate 41 and the Faraday rotator 42 are arranged in the magnetic ring 43 at intervals. In one embodiment, the signal light passing through the quarter wave plate 41 in the forward direction is rotated by 45° to the left, and is rotated by 45° to the right through the Faraday rotator 42, so that the polarization state of the signal light passing through the optical rotation component 4 in the forward direction is maintained. Since the quarter wave plate 41 has a direction, the signal light passing through the Faraday rotator 42 in the reverse direction is rotated by 45° to the right, and is rotated by 45° to the right through the quarter wave plate 41, so that the polarization state of the signal light passing through the optical rotation component 4 in the reverse direction is rotated by 90°.

[0038] The system includes a first optical path and a second optical path. The signal light (P-state polarized signal light) of the first optical path is input from the 1-way multi-way optical fiber collimation component (Prot1) end and output from the first multi-way optical fiber collimation component 2 (Prot2) end, realizing the function of dividing a single-way P-state polarized signal light from 1 to 8 ways. The signal light (P-state polarized signal light) of the second optical path is input from the first multi-way optical fiber collimation component 2 (Prot2) end and input from the second multi-way optical fiber collimation component 3 (Prot3) end, realizing the function of array output of 8-way signal light. It is worth noting that the signal light (P-state polarized signal light) of the first optical path and the signal light (P-state polarized signal light) of the second optical path have different parameters such as amplitude and frequency, so no interference will occur.

[0039] Combination Figure 1-2 , Figure 4As shown, in this embodiment, the first optical path is formed by the first multi-channel optical fiber collimation component 2, the polarization component 1, the optical rotation component 4 and the first multi-channel optical fiber collimation component 2 along the signal light transmission direction. Among them, the 1-way multi-channel optical fiber collimation component is composed of a polarization-maintaining single-core optical fiber pigtail 5, a splitter chip 6 and a first 8-channel lens array 7, and the polarization-maintaining single-core optical fiber pigtail 5 and the first 8-channel lens array 7 are optically coupled to the splitter chip 6 respectively. The first multi-channel optical fiber collimation component 2 is composed of a first 8-channel polarization-maintaining optical fiber array 21 and a second 8-channel lens array 22 optically coupled. Specifically, the above-mentioned components are, from left to right, the polarization-maintaining single-core optical fiber pigtail 5, the splitter chip 6, the first 8-channel lens array 7, the polarization component 1, the optical rotation component 4, the second 8-channel lens array 22 and the first 8-channel polarization-maintaining optical fiber array 21.

[0040] Through the above-mentioned setting method, a single-path P-polarization state signal light is input from the end of the polarization-maintaining single-core optical fiber pigtail 5 (Prot1), and the single-path P-polarization state signal light is divided into multiple signal lights after passing through the splitter chip 6, and is preferably divided into 8 signal lights (P-state polarization signal lights) in this method; when the above-mentioned 8 signal lights (P-state polarization signal lights) pass through the first 8-channel lens array 7, the first 8-channel lens array 7 respectively performs beam collimation on each signal light; after the beam collimation, the 8 signal lights first pass through the polarization component 1 in a straight direction, and then pass through the optical rotation component 4 in a forward direction. At this time, the polarization state directions of the 8 signal lights do not change, and continue to be transmitted to the second 8-channel lens array 22; the second 8-channel lens array 22 outputs the 8 signal lights from the first 8-channel polarization-maintaining optical fiber array 21 (Prot2) end after beam collimation, thereby realizing the function of dividing the single-path P-polarization state signal light from 1 path to 8 paths.

[0041] Combination Figure 1 , Figure 3 and Figure 6 As shown, in this embodiment, the second optical path is formed along the signal light transmission direction by the first multi-channel optical fiber collimation component 2, the optical rotation component 4, the polarization component 1 and the second multi-channel optical fiber collimation component 3. The second multi-channel optical fiber collimation component 3 is composed of a second 8-channel polarization-maintaining optical fiber array 31 and a third 8-channel lens array 32 optically coupled. Specifically, the second 8-channel polarization-maintaining optical fiber array 31 is located below the polarization component 1, and the third 8-channel lens array 32 is located between the second 8-channel polarization-maintaining optical fiber array 31 and the polarization component 1.

[0042] Through the above-mentioned setting, 8 signal lights (P-state polarized signal lights) are input from the first 8-channel polarization-maintaining fiber array 21 (Prot2) end, and when passing through the second 8-channel lens array 22, the second 8-channel lens array 22 performs beam collimation on each signal light respectively; the 8 signal lights after beam collimation enter the optical rotation component 4 in the reverse direction, at this time, the polarization state direction of the 8 signal lights (P-state polarized signal lights) is rotated 90°, and are converted into 8 S-state polarized signal lights; after the 8 S-state polarized signal lights enter the polarization component 1, they are totally reflected under the action of the interference film layer set on the inclined surfaces of the two right-angle prisms, and the 8 S-state polarized signal lights are deflected downward by 90° to be input into the third 8-channel lens array 32; the third 8-channel lens array 32 outputs the 8 S-state polarized signal lights from the second 8-channel polarization-maintaining fiber array 31 (Prot2) end after beam collimation, thereby realizing the array output function of the 8 signal lights.

[0043] In this embodiment, it is worth noting that in one mode, the interval between two adjacent channels of the first 8-channel lens array 7, the interval between two adjacent channels of the second 8-channel lens array 22, and the interval between two adjacent channels of the third 8-channel lens array 32 are 0.5 mm.

[0044] In another embodiment, the interval between two adjacent channels of the first 8-channel lens array 7, the interval between two adjacent channels of the second 8-channel lens array 22, and the interval between two adjacent channels of the third 8-channel lens array 32 are 0.75 mm.

[0045] It is worth noting that the system can be used as an in-vehicle product in the automotive industry, and one of the in-vehicle products can be a laser radar detector. The laser radar detector inputs a single P-polarized state signal light from the Prot1 end, and outputs 8 signal lights in different directions from the Prot2 end through the first optical path to detect external obstacles; when one or more signal lights detect an obstacle, the feedback signal light is input from the Prot2 end and output from the Prot3 end through the second optical path, thereby obtaining obstacle information.

[0046] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A 1-way multi-circulator array system, characterized in that: It includes a polarization component, a 1-way multi-channel optical fiber collimation component, a first multi-channel optical fiber collimation component, a second multi-channel optical fiber collimation component and an optical rotation component; The one-way multi-channel optical fiber collimation component, the first multi-channel optical fiber collimation component and the second multi-channel optical fiber collimation component are respectively arranged corresponding to the polarization component, wherein the one-way multi-channel optical fiber collimation component and the first multi-channel optical fiber collimation component are respectively arranged on opposite sides of the polarization component; The optical rotation component is arranged between the polarization component and the first multi-path optical fiber collimation component; The one-to-multi-path optical fiber collimation assembly is used to split a single-path P-polarization state signal light into multiple-path P-polarization state signal lights; The polarization component can transmit the P-polarization signal light and transmit it to the optical rotation component. The optical rotation component inputs the P-polarization signal light into the first multi-path optical fiber collimation component after receiving the forward input P-polarization signal light. The optical rotation component can convert the P-polarization state signal light received by the first multi-channel optical fiber collimation component into the S-polarization state signal light, and transmit it to the polarization component, and the polarization component can totally reflect the S-polarization state signal light and input it to the second multi-channel optical fiber collimation component. The polarization component includes a polarization beam splitter prism formed by two right-angle prisms, and an interference film layer is arranged on the inclined surfaces of the two right-angle prisms that are attached to each other, so as to be able to transmit the P polarization state signal light and fully reflect the S polarization state signal light. The 1-way multi-channel optical fiber collimation component is composed of a polarization-maintaining single-core optical fiber pigtail, a splitter chip and a first 8-channel lens array. The polarization-maintaining single-core optical fiber pigtail and the first 8-channel lens array are respectively arranged on both sides of the splitter chip and are optically coupled to the splitter chip respectively, wherein the first 8-channel lens array is located between the splitter chip and the polarization component.

2. The one-way multi-circulator array system according to claim 1, characterized in that: The first multi-channel fiber collimation assembly is composed of a first 8-channel polarization-maintaining fiber array and a second 8-channel lens array optically coupled, wherein the second 8-channel lens array is located between the first 8-channel polarization-maintaining fiber array and the optical rotation assembly.

3. The one-way multi-circulator array system according to claim 2, characterized in that: The second multi-channel fiber collimation assembly is composed of a second 8-channel polarization-maintaining fiber array and a third 8-channel lens array optically coupled, wherein the third 8-channel lens array is located between the second 8-channel polarization-maintaining fiber array and the polarization assembly.

4. The one-way multi-circulator array system according to claim 1, wherein: The optical rotation component includes a quarter wave plate, a Faraday rotator and a magnetic ring arranged at intervals, so that the polarization state of the optical signal passing through the optical rotation component in the forward direction is maintained, and the polarization state of the optical signal passing through the optical rotation component in the reverse direction is rotated by 90°.

5. The one-way multi-circulator array system as claimed in claim 3, characterized in that: The interval between two adjacent channels of the first 8-channel lens array, the interval between two adjacent channels of the second 8-channel lens array, and the interval between two adjacent channels of the third 8-channel lens array are all 0.5 or 0.75 mm.

6. The one-way multi-circulator array system according to claim 1, wherein: It comprises a substrate, on which the polarization component, the 1-way multi-channel optical fiber collimation component, the first multi-channel optical fiber collimation component, the second multi-channel optical fiber collimation component and the optical rotation component are glued by optical glue.

7. The one-way multi-circulator array system according to claim 1, wherein: It includes a first optical path formed by the 1-way multi-channel optical fiber collimation component, polarization component, optical rotation component and the first multi-channel optical fiber collimation component along the signal light transmission direction; and a second optical path formed by the first multi-channel optical fiber collimation component, optical rotation component, polarization component and the second multi-channel optical fiber collimation component along the signal light transmission direction, wherein the amplitude and frequency of the signal light in the first optical path are different from the amplitude and frequency of the signal light in the second optical path.

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