Spectral polarization measuring device and system

Abstract

The invention provides a spectral polarization measuring device and system, and the device comprises a housing which is provided with a bottom plate; the at least three groups of measuring parts are respectively positioned at preset positions on the bottom plate in the shell, and are used for measuring polarization amounts at different angles; the driving part is located at the central position of the bottom plate and connected with each measuring part, and rotation of the driving part can drive the three sets of measuring parts to rotate at the same time; and the control part is connected with the driving part and controls the driving part to rotate so as to simultaneously drive the three groups of measuring parts to rotate to complete polarization measurement of light. The rotation angle of the measuring part can be conveniently and flexibly controlled. The accuracy of the polarization angle during polarization measurement can be improved, the time loss during angle adjustment is reduced, and the experiment process is accelerated.

Description

Technical Field

[0001] The invention belongs to the technical field of optical fiber measurement, and in particular relates to a spectral polarization measurement device and system. Background Art

[0002] Polarization is one of the basic physical properties of light and contains information that intensity-based sensors ignore. The traditional approach to polarization measurement is to build an optical path that contains a large number of polarization-sensitive optical components (such as polarizers, wave plates, etc.), measure the optical power after passing through each component, calculate the corresponding Stokes parameters, and thus determine the polarization state.

[0003] It has important applications in target recognition. Extracting polarization spectrum information requires measuring polarization information at least at three angles. Therefore, it is very important to obtain polarization information of the target at three different angles.

[0004] At present, there is no equipment or device that can measure polarization information of three detectors at the same time. A single detector is used to measure polarization information of three angles by adjusting the angle of the polarizer. The steps are cumbersome and the measurement cycle is long. Under field measurement conditions, if the light field changes rapidly, the three measurement values ​​have little correlation, which will lead to inaccurate tests and increase the experimental cycle. Summary of the invention

[0005] The present invention provides a spectral polarization measurement device and system, which can solve the problem of using a single detector to measure polarization information at three angles by adjusting the angle of a polarizer, which has cumbersome steps and a long measurement cycle. Under field measurement conditions, if the light field changes rapidly, the three measurement values ​​have little correlation, which will lead to test inaccuracy and increase the experimental cycle.

[0006] The technical solution provided by the present invention is as follows:

[0007] In one aspect, a spectral polarization measurement device is provided, comprising:

[0008] A housing having a bottom plate;

[0009] At least three groups of measuring parts, each group of measuring parts is located at a preset position on the bottom plate in the housing, and each group of measuring parts is used to measure polarization amounts at different angles;

[0010] A driving part, located at the center of the bottom plate and connected to each measuring part, wherein the rotation of the driving part can drive the three groups of measuring parts to rotate simultaneously;

[0011] The control unit is connected to the driving unit, controls the driving unit to rotate and then drives the three groups of measuring units to rotate simultaneously to complete the polarization measurement of light.

[0012] In an optional embodiment, the center of each group of measuring parts intersects with the extension line of the center of the driving part, and three angles formed by the three extension lines are the same.

[0013] In an optional embodiment, the bottom plate of the housing includes three extensions, and the center of each extension intersects with an extension line of the center of the driving part;

[0014] A set of measuring parts is arranged on each extending part.

[0015] In an optional embodiment, the extension lines of the three extensions bisect the bottom plate.

[0016] In an optional embodiment, the measuring part includes a driven wheel, a polarizing plate fixture, a polarizing plate, and an optical fiber mounting position;

[0017] The driven wheel is arranged around the optical fiber installation position;

[0018] The polarizing plate fixture is located at the gap between the driven wheel and the optical fiber installation position;

[0019] The polarizer is arranged at the polarizer fixture;

[0020] The driven wheel is connected to the driving part to drive the polarizing plate fixture to rotate under the rotation of the driving part.

[0021] In an optional embodiment, a groove is provided between the driven wheel and the optical fiber installation position, and the polarizer clamp is located in the groove.

[0022] In an optional embodiment, the central axis of the polarizer fixture is parallel to the central axis of the optical fiber installation position.

[0023] In an optional embodiment, the driving unit includes a driving motor and a driving wheel;

[0024] The driving wheel is rotatably arranged at the center position of the three groups of measuring parts on the bottom plate, the driving motor is connected to the driving wheel, the driving wheel is meshed with the driven wheel, and the driving wheel rotates to drive the driven wheel of each group of measuring parts to rotate.

[0025] On the other hand, a spectral polarization measurement system is provided, the system comprising any of the above-mentioned devices, the system comprising:

[0026] Get the deviation angle of the optical fiber measurement;

[0027] Based on the deviation angle, the control unit controls the driving unit to rotate, thereby driving the three groups of measuring units to rotate, so that the three groups of measuring units stop at a preset position, which corresponds to the deviation angle of the optical fiber measurement; and the measuring unit based on the preset position measures the deviation amount of the optical fiber.

[0028] The spectral polarization measurement device provided by the embodiment of the present invention has at least the following beneficial effects:

[0029] The spectral polarization measurement device provided by the embodiment of the present invention is based on setting at least three groups of measurement parts, and is connected to each measurement part through a driving part, and the rotation of the driving part can drive the three groups of measurement parts to rotate simultaneously; the control part is connected to the driving part, controls the rotation of the driving part and then drives the three groups of measurement parts to rotate simultaneously to complete the polarization measurement of light. The present invention can conveniently and flexibly control the rotation angle of the measurement part. It can improve the accuracy of the polarization angle during polarization measurement, while saving time loss when adjusting the angle, and speeding up the experimental process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and other objects, features and advantages of the present disclosure will become more apparent through a more detailed description of exemplary embodiments of the present disclosure in conjunction with the accompanying drawings, wherein like reference numerals generally represent like components throughout the exemplary embodiments of the present disclosure.

[0031] Figure 1 A schematic structural diagram of a spectral polarization measurement device is shown.

[0032] Wherein, the accompanying drawings are marked as follows:

[0033] 100-extension part, 1-measuring part, 11-driven wheel, 12-polarizer fixture, 13-optical fiber installation position, 2-driving part, 21-driving motor, 22-driving wheel. DETAILED DESCRIPTION

[0034] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to make the present disclosure more thorough and complete, and to fully convey the scope of the present disclosure to those skilled in the art.

[0035] As used herein, the term "including" and its variations mean open inclusion, i.e., "including but not limited to". Unless otherwise stated, the term "or" means "and / or". The term "based on" means "based at least in part on". The terms "an example embodiment" and "an embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "first", "second", etc. may refer to different or the same objects. Other explicit and implicit definitions may also be included below.

[0036] See also Figure 1On the one hand, an embodiment of the present invention provides a spectral polarization measurement device, and an embodiment of the present invention provides a spectral polarization measurement device, including: a shell, at least three groups of measuring parts 1, a driving part 2 and a control part; wherein the shell has a bottom plate; each group of measuring parts 1 in the at least three groups of measuring parts 1 is respectively located at a preset position on the bottom plate in the shell, and each group of measuring parts 1 is used to measure the polarization amount at different angles; the driving part 2 is located at the center position of the bottom plate and is connected to each measuring part 1, and the rotation of the driving part 2 can drive the three groups of measuring parts 1 to rotate simultaneously; the control part is connected to the driving part 2, controls the driving part 2 to rotate and then drives the three groups of measuring parts 1 to rotate simultaneously to complete the polarization measurement of light.

[0037] The spectral polarization measurement device provided by the embodiment of the present invention is based on the setting of at least three groups of measurement parts 1, and is connected to each measurement part 1 through a driving part 2, and the rotation of the driving part 2 can drive the three groups of measurement parts 1 to rotate simultaneously; the control part is connected to the driving part 2, controls the rotation of the driving part 2 and then drives the three groups of measurement parts 1 to rotate simultaneously to complete the polarization measurement of light. The present invention can conveniently and flexibly control the rotation angle of the measurement part 1. It can improve the accuracy of the polarization angle during polarization measurement, while saving time loss when adjusting the angle, and speeding up the experimental process.

[0038] It should be noted that the measuring device provided in the embodiment of the present invention can be used to measure the polarization amount of the spectrum generated by the optical fiber, and can also be used for other types of detectors. The embodiment of the present invention does not limit the source of the spectrum.

[0039] Furthermore, the spectrum sources of the three groups of measurement parts can all be optical fibers, or a mixture of optical fibers and other detectors.

[0040] It should be noted that the measuring device provided in the embodiment of the present invention is based on the fact that both the measuring part 1 and the driving part 2 are located in the shell, so the specific shape of the shell is not shown in the figure, and only the bottom plate of the shell is retained, that is, the shell also includes a shell that surrounds the driving part 2 and the measuring part 1, and a storage space is formed between the shell and the bottom plate, and the driving part 2 and the measuring part 1 are located in the storage space. In addition, the control part is not shown in the figure, and illustratively, the control part can be a PLC controller.

[0041] In an optional embodiment, the extension lines of the center of each group of measuring parts 1 and the center of the driving part 2 intersect, and the three angles formed by the three extension lines are the same.

[0042] In the embodiment of the present invention, each group of measuring parts 1 is arranged at the three vertices of an equilateral triangle, and the driving part 2 is located at the center of the equilateral triangle to ensure that the driving part 2 can drive each group of measuring parts 1 to rotate simultaneously, thereby realizing the measurement of the normalized values ​​of at least three points. On the one hand, the measurement efficiency is improved and the experimental process is accelerated, and on the other hand, the measurement accuracy is improved.

[0043] In an optional embodiment, the bottom plate of the housing includes three extension parts 100 , and the center of each extension part 100 intersects with the extension line of the center of the driving part 2 ; and a group of measuring parts 1 is arranged on each extension part 100 .

[0044] See also Figure 1 , three extension parts 100 extend outward from the center of the bottom plate of the housing, and the centers of the three extension parts 100 intersect with the extension line of the center of the driving part 2. Exemplarily, the shape of the extension part 100 can be circular or rectangular, and the specific shape can be determined as needed. In this embodiment, the shape of the extension part 100 is circular.

[0045] In an optional embodiment, the extension lines of the three extension parts 100 bisect the bottom plate. The extension parts 100 provided in the embodiment of the present invention are of the same size, and the angles between the center lines of the extension parts 100 are the same.

[0046] In an optional embodiment, the measuring part 1 includes a driven wheel 11, a polarizing plate fixture 12, a polarizing plate and an optical fiber installation position 13;

[0047] The driven wheel 11 is arranged around the optical fiber installation position 13;

[0048] The polarizing plate fixture 12 is located at the gap between the driven wheel 11 and the optical fiber installation position 13;

[0049] The polarizing plate is arranged at the polarizing plate fixture 12;

[0050] The driven wheel 11 is connected to the driving part 2 so as to drive the polarizing plate holder 12 to rotate when the driving part 2 rotates.

[0051] In an optional embodiment, a groove is provided between the driven wheel 11 and the optical fiber installation position 13, and the polarizing plate fixture 12 is located in the groove.

[0052] Furthermore, the groove may be a rectangular groove, and the polaroid clamp may be a rectangular clamp, for example, a first clamp and a second clamp are arranged opposite to each other, the first clamp and the second clamp are located in the groove, and the polaroid is located between the first clamp and the second clamp. Since the first clamp and the second clamp are located in the groove and the position of the groove is fixed, the position of the polaroid remains fixed, and the polaroid will not be displaced, thereby ensuring the accuracy of the measurement.

[0053] It should be noted that the source of the spectrum in the embodiment of the present invention may be an optical fiber or other types of detectors, and the diameter of the optical fiber may be different from the diameter of the other detectors, so the size of the optical fiber installation position 13 can be determined according to the size of the optical fiber or other detectors of the spectrum source. However, the specific position of the optical fiber installation position 13 does not change, that is, the relative positions of the three groups of optical fiber installation positions 13 do not change.

[0054] In an optional embodiment, the central axis of the polarizer fixture 12 is parallel to the central axis of the optical fiber installation position 13 .

[0055] In an optional embodiment, the driving unit 2 includes a driving motor 21 and a driving wheel 22;

[0056] The driving wheel 22 is rotatably arranged at the center of the three groups of measuring parts 1 on the bottom plate, the driving motor 21 is connected to the driving wheel 22, the driving wheel 22 is meshed with the driven wheel 11, and the driving wheel 22 rotates to drive the driven wheel 11 of each group of measuring parts 1 to rotate.

[0057] On the other hand, a spectral polarization measurement system is also provided, the system includes any of the above-mentioned devices, the system includes: obtaining the polarization angle of optical fiber measurement; based on the polarization angle, the control unit controls the driving unit 2 to rotate, thereby driving the three groups of measuring units 1 to rotate, so that the three groups of measuring units 1 stop at a preset position, and the preset position corresponds to the polarization angle of optical fiber measurement; and measuring the polarization amount of the optical fiber based on the measuring unit 1 at the preset position.

[0058] The embodiments of the present disclosure have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or technical improvements in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A spectral polarization measurement device, It is characterized in that include: A housing having a bottom plate; At least three groups of measuring parts, each group of measuring parts is located at a preset position on the bottom plate in the housing, and each group of measuring parts is used to measure polarization amounts at different angles; A driving part, located at the center of the bottom plate and connected to each measuring part, wherein the rotation of the driving part can drive the three groups of measuring parts to rotate simultaneously; The control unit is connected to the driving unit, controls the driving unit to rotate and then drives the three groups of measuring units to rotate to complete the polarization measurement of light; the center of each group of measuring units intersects with the extension line of the center of the driving unit, and the three angles formed by the three extension lines are the same.

2. The spectral polarization measurement device according to claim 1, It is characterized in that The bottom plate of the housing includes three extension parts, and the center of each extension part intersects with the extension line of the center of the driving part; A set of measuring parts is arranged on each extending part.

3. The spectral polarization measurement device according to claim 2, It is characterized in that The extension lines of the three extensions bisect the bottom plate.

4. The spectral polarization measurement device according to any one of claims 1 to 3, It is characterized in that The measuring part includes a driven wheel, a polarizing plate fixture, a polarizing plate and an optical fiber installation position; The driven wheel is arranged around the optical fiber installation position; The polarizing plate fixture is located at the gap between the driven wheel and the optical fiber installation position; The polarizer is arranged at the polarizer fixture; The driven wheel is connected to the driving part to drive the polarizing plate fixture to rotate under the rotation of the driving part.

5. The spectral polarization measurement device according to claim 4, It is characterized in that A groove is arranged between the driven wheel and the optical fiber installation position, and the polarizing plate fixture is located in the groove.

6. The spectral polarization measurement device according to claim 4, It is characterized in that The central axis of the polarizing plate fixture is parallel to the central axis of the optical fiber installation position.

7. The spectral polarization measurement device according to claim 4, It is characterized in that The driving part includes a driving motor and a driving wheel; The driving wheel is rotatably arranged at the center position of the three groups of measuring parts on the bottom plate, the driving motor is connected to the driving wheel, the driving wheel is meshed with the driven wheel, and the driving wheel rotates to drive the driven wheel of each group of measuring parts to rotate.

8. A spectral polarization measurement system, It is characterized in that The system comprises the device according to any one of claims 1 to 7, and the system comprises: Get the deviation angle of the optical fiber measurement; Based on the deviation angle, the control unit controls the driving unit to rotate, thereby driving the three groups of measuring units to rotate, so that the three groups of measuring units stop at a preset position, which corresponds to the deviation angle of the optical fiber measurement; and the measuring unit based on the preset position measures the deviation amount of the optical fiber.

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