Fiber bragg grating etalon based on closed cavity metal plate temperature control and using method

A fiber grating and metal plate technology, applied in special recording/indicating devices, using optical devices to transmit sensing components, instruments, etc., can solve problems such as instability, fiber grating signal detection equipment is susceptible to interference from the external environment, etc., to achieve The effect of light weight, expanding the ambient temperature range, and improving the accuracy of temperature control

Active Publication Date: 2021-02-09
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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  • Fiber bragg grating etalon based on closed cavity metal plate temperature control and using method
  • Fiber bragg grating etalon based on closed cavity metal plate temperature control and using method
  • Fiber bragg grating etalon based on closed cavity metal plate temperature control and using method

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Embodiment 1

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

[0052] The first heat preservation device 4 includes a first temperature sensor 41, a first temperature control plate 42, a first cooling plate 43 for heating and cooling, a first heat dissipation plate 44, a first heat preservation device outer frame 45, a first heat preservation The airtight first thermal insulation cavity 46 formed by the device outer frame 45 and the first cooling plate 43 and the first le...

Embodiment 2

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

[0056] The first heat preservation device 4 includes a first temperature sensor 41, a first temperature control plate 42, a first cooling plate 43 for heating and cooling, a first heat dissipation plate 44, a first heat preservation device outer frame 45, a first heat preservation The airtight first thermal insulation cavity 46 formed by the device outer frame 45 and the first cooling plate 43 and the first le...

Embodiment 3

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

[0063] The first heat preservation device 4 includes a first temperature sensor 41, a first temperature control plate 42, a first cooling plate 43 for heating and cooling, a first heat dissipation plate 44, a first heat preservation device outer frame 45, a first heat preservation The airtight first thermal chamber 46 formed by the device outer frame 45 and the first cooling plate 43 and the first temperatu...

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Abstract

The invention provides a fiber bragg grating etalon based on closed cavity metal plate temperature control and a using method. The fiber bragg grating etalon comprises a sensitive element, a leading-out optical cable and an optical fiber adapter connected with the sensitive element in sequence, a first heat preservation device connected with thesensitive element, a second heat preservation devicearranged outside the first heat preservation device, and a case arranged outside the second heat preservation device. The using method of the fiber bragg grating etalon comprises the steps of initialtemperature judgment, adjustment, internal and external temperature difference judgment, continuous internal and external layer PID temperature control and the like. The invention provides a fiber bragg grating etalon based on closed cavity metal plate temperature control and a using method of the fiber bragg grating etalon in order to solve the problem that fiber bragg grating signal detection equipment is prone to interference of the external environment and accordingly instability is caused. Thefiber bragg grating etalon can realize accurate control on the center wavelength of thefiber bragg grating, has the advantages of high stability, small size, light weight, good test coverage, flexible configuration of the number of gratings and the like, and can meet the calibration, correction and test requirements of fiber bragg 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 an optical fiber grating etalon based on the temperature control of a metal plate in a closed cavity and a use method thereof. Background technique [0002] Since Hill et al. in Canada first discovered the photosensitive phenomenon in the germanium-doped silica fiber in 1978 and used the standing wave method to manufacture the world's first fiber grating, people's research on fiber grating in light sensing has become more extensive. and in-depth. In addition to the advantages of general fiber optic sensors such as anti-electromagnetic interference, high sensitivity, small size, light weight, long transmission distance, and resistance to harsh environments, fiber grating sensors also have strong intrinsic self-coherence capabilities and are convenient for networking and arrays to achieve multi-parameter distribution. Advantages such as measur...

Claims

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Application Information

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Patent Type & Authority Applications(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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