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A kind of fiber grating etalon based on closed cavity metal plate temperature control and using method

A fiber grating and metal plate technology, which is used in special recording/indicating devices, and uses optical devices to transmit sensing components, instruments, etc., can solve the problems of fiber grating signal detection equipment being easily disturbed and unstable by the external environment, and achieve Expand the ambient temperature range, light weight, reduce the effect of interference

Active Publication Date: 2022-07-26
BEIJING RES INST OF TELEMETRY +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the fiber grating signal detection equipment is easily disturbed by the external environment and cause instability, the present invention proposes a fiber grating etalon based on the temperature control of the closed cavity metal plate and its use method. The fiber grating etalon can realize Precise control of the center wavelength of the fiber grating, and has the advantages of high stability, small size, light weight, good test coverage, flexible configuration of the number of gratings, etc., which can meet the calibration, calibration and testing requirements of fiber grating signal detection equipment

Method used

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  • A kind of fiber grating etalon based on closed cavity metal plate temperature control and using method
  • A kind of fiber grating etalon based on closed cavity metal plate temperature control and using method
  • A kind of fiber grating etalon based on closed cavity metal plate temperature control and using method

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Effect test

Embodiment 1

[0051] like Figure 1-2 As shown in the figure, a fiber grating etalon based on closed-cavity metal plate temperature control includes a sensitive element 1, an outgoing optical cable 2 and an optical fiber adapter 3 connected in sequence with the sensitive element 1, and a first heat preservation device connected with the sensitive element 1. 4, the second heat preservation device 5 arranged outside the first heat preservation device 4 and the case 6 outside the second heat preservation device 5, and the optical fiber adapter 3 is installed on the case 6;

[0052] The first heat preservation device 4 includes a stacked first temperature sensor 41, a first temperature control plate 42, a first refrigeration sheet 43 for heating and cooling, a first heat dissipation plate 44, a first heat preservation device outer frame 45, and a first heat preservation device. A sealed first heat preservation cavity 46 formed by the outer frame 45 of the device and the first refrigeration shee...

Embodiment 2

[0055] like Figure 2-3 As shown in the figure, a fiber grating etalon based on closed-cavity metal plate temperature control includes a sensitive element 1, an outgoing optical cable 2 and an optical fiber adapter 3 connected in sequence with the sensitive element 1, and a first heat preservation device connected with the sensitive element 1. 4, the second heat preservation device 5 arranged outside the first heat preservation device 4 and the case 6 outside the second heat preservation device 5, and the optical fiber adapter 3 is installed on the case 6;

[0056] The first heat preservation device 4 includes a stacked first temperature sensor 41, a first temperature control plate 42, a first refrigeration sheet 43 for heating and cooling, a first heat dissipation plate 44, a first heat preservation device outer frame 45, and a first heat preservation device. A sealed first heat preservation cavity 46 formed by the outer frame 45 of the device and the first refrigeration shee...

Embodiment 3

[0062] like figure 2 , 4 As shown in the figure, a fiber grating etalon based on closed-cavity metal plate temperature control includes a sensitive element 1, an outgoing optical cable 2 and an optical fiber adapter 3 connected in sequence with the sensitive element 1, and a first heat preservation device connected with the sensitive element 1. 4, the second heat preservation device 5 arranged outside the first heat preservation device 4 and the case 6 outside the second heat preservation device 5, and the optical fiber adapter 3 is installed on the case 6;

[0063] The first heat preservation device 4 includes a stacked first temperature sensor 41, a first temperature control plate 42, a first refrigeration sheet 43 for heating and cooling, a first heat dissipation plate 44, a first heat preservation device outer frame 45, and a first heat preservation device. A closed first heat preservation cavity 46 formed by the outer frame 45 of the device and the first refrigeration s...

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Abstract

The invention provides a fiber grating etalon based on a closed cavity metal plate temperature control and a method of using the same. A second heat preservation device outside the first heat preservation device and a cabinet disposed outside the second heat preservation device. The use methods of fiber grating etalon include initial temperature determination, adjustment, determination of temperature difference between inner and outer layers, continuous PID temperature control of inner and outer layers, etc. In order to solve the problem that the fiber grating signal detection equipment is easily disturbed by the external environment and causes instability, the present invention proposes a fiber grating etalon based on a closed cavity metal plate temperature control and a method of using the fiber grating etalon. The fiber grating etalon can realize the optical fiber grating etalon. The precise control of the center wavelength of the grating has the advantages of high stability, small size, light weight, good test coverage, and flexible configuration of the number of gratings, which can meet the calibration, calibration and testing requirements of fiber grating signal detection equipment.

Description

technical field [0001] The invention relates to the technical field of optical fiber grating measurement and testing, in particular to a fiber grating etalon based on a closed cavity metal plate temperature control and a method of using the same. Background technique [0002] Since the first discovery of photosensitive phenomenon in germanium-doped silica fiber by Hill et al. in Canada in 1978 and the world's first fiber grating manufactured by the standing wave method, people's research on fiber grating in light sensing has become more extensive. and in depth. In addition to the advantages of general optical fiber sensors such as anti-electromagnetic interference, high sensitivity, small size and light weight, long transmission distance, and resistance to harsh environments, fiber grating sensors also have strong intrinsic self-coherence capabilities and are easy to network and form arrays to achieve multi-parameter distribution. measurement and other advantages. The fibe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01D5/353G01D3/036
CPCG01D5/35354G01D3/036
Inventor 张伟航史青张高举钟亮刘蓓盛德卫高志强徐暠宁佳晨王兆刚
Owner BEIJING RES INST OF TELEMETRY
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