Calibrating device of fiber strain tester and equipment
A calibration device and optical fiber strain technology, applied in the field of metrology, can solve the problems of third-party organizations not widely conducting business, lack of optical fiber metering standard devices, and inconvenience in metering service work, etc., to improve user experience, simple structure, and improved user experience. Effect
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Embodiment 1
[0034] See figure 1 , Is a schematic diagram of the connection structure between a calibration device 1 and an optical fiber strain tester 2 provided in Embodiment 1 of the present invention.
[0035] In this embodiment, the calibration device 1 includes a strain control module 12, the strain control module 12 includes a temperature controller 121 and a detachable optical fiber reel 122, the optical fiber reel 122 is wound with a first length Standard optical fiber; the strain control module 12 is used to control the temperature change of the standard optical fiber with the first length wound in the optical fiber tray 122 through the temperature controller 121 to change the standard optical fiber with the first length The dependent variable. It can achieve the beneficial effects of reducing the volume of the calibration device, simple structure and convenient use.
[0036] Specifically, when the strain parameter measurement function of the optical fiber strain tester is calibrated...
Embodiment 2
[0040] Such as figure 2 Shown is a schematic diagram of the connection structure between an optical fiber strain tester 2 and a calibration device 1 provided by Embodiment 2 of the present invention. The calibration device 1 of the optical fiber strain tester of this embodiment is further developed on the basis of Embodiment 1. The improvement is that the calibration device further includes a fiber grating with a second length, and the fiber grating with the second length is a fiber grating with the same dispersion characteristics as the standard fiber with a third length; wherein, The second length is not greater than 20cm, and the third length is not less than 10km.
[0041] It should be noted that the second length in the fiber grating 11 having the second length refers to the length of the fiber grating as a whole device.
[0042] Specifically, when calibrating the test function of the optical fiber strain tester 2 for testing dispersion parameters by the calibration device 1 ...
Embodiment 3
[0045] This embodiment is further improved on the basis of embodiment 1. The improvement lies in: Figure 4 As shown, the calibration device 1 further includes an optical fiber coupler 13 and a first optical fiber ring 14. The first optical fiber ring 14 and the optical fiber coupler 13 are connected to form a closed loop through a standard optical fiber. The optical fiber strain tester 2 includes a first optical interface 21 and a second optical interface 22, and the optical fiber coupler 13 includes a first input end 131, a second input end 132, a first output end 133, and a second output end 134 The first input end 131 is connected to the first optical interface 21 through a standard optical fiber, and the first output end 131, the fiber grating 11 and the second optical interface 22 are serially connected through a standard optical fiber; The second input end 132 is connected to one end of the first optical fiber ring 14 through a standard optical fiber, and the second outpu...
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