Young's optical fiber white-light interferometry interrogator with optical path adjusting function

A technology of white light interferometer and demodulator, which is applied in the field of optical fiber, can solve the problems of small measurement dynamic range, achieve the effects of expanding dynamic range, improving signal-to-noise ratio, and ensuring stability

Active Publication Date: 2015-04-22
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

[0005] The above-mentioned prior art has the disadvantages of sm

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  • Young's optical fiber white-light interferometry interrogator with optical path adjusting function
  • Young's optical fiber white-light interferometry interrogator with optical path adjusting function
  • Young's optical fiber white-light interferometry interrogator with optical path adjusting function

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[0022] The invention provides a Young's fiber white light interferometer demodulator with adjustable optical path. It can be used in the demodulation system of multiplexed fiber white light interference sensor array. The Young's fiber white light interference demodulator is composed of a fiber coupler, a three-port optical circulator, a fiber collimator, a scanning mirror, an optical fiber, a cylindrical lens, and a photoelectric coupling device CCD array. The light carrying the information to be measured generated by the measuring interferometer is divided into two beams by the optical fiber coupler 1 and output at the fiber end 3 and the fiber end 4 respectively. The two output light fields are coherently superimposed and are converged on the linear CCD detection array 6 to form a series of light and dark stripes. The information to be measured carried by the external measurement interferometer can be demodulated by performing subsequent signal processing on the received int...

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Abstract

The invention belongs to the technical field of optical fibers, and particularly relates to a Young's optical fiber white-light interferometry interrogator with an optical path adjusting function. The Young's optical fiber white-light interferometry interrogator can be applied to a demodulating system of a multiplexing optical fiber white light interference sensor array. The Young's optical fiber white-light interferometry interrogator is formed by connecting an optical fiber coupler, an optical path adjusting device, a first optical fiber emitting end, a second optical fiber emitting end, a cylindrical lens, a linear CCD detection array and optical fibers. A light beam which is generated by an external measurement interferometer and contains information to be tested is divided into two branches through the optical fiber coupler and output at a first optical fiber tail end and a second optical fiber tail end, and two output light fields are subjected to coherence stack and then are gathered to the linear CCD detection array to form a row of strips which are dark and bright alternately. The Young's optical fiber white-light interferometry interrogator is achieved by connecting one optical fiber arm of two arms of Young's optical fiber interferometry interrogator and a space optical path adjusting device in series, the dynamic measurement range of the system can be greatly expanded, and the interferometry interrogator can be in the best state in work.

Description

technical field [0001] The invention belongs to the field of optical fiber technology, and specifically relates to a Young's optical fiber white light interferometric demodulator with an optical path adjustable function that can be used in a demodulation system of a multiplexed optical fiber white light interference sensor array. Background technique [0002] Optical fiber white light interference technology and method is a unique measurement method and sensing technology in the field of optical fiber technology. This specialized technology is used in the study of wide-spectrum optical interference characteristics, absolute deformation optical fiber sensing measurement, the structure of optical waveguide devices and the detection of light wave reflection characteristic parameters, and the measurement and evaluation of optical polarization state transverse coupling in fiber optic gyroscope rings, especially in It is widely used in the aspects of optical tomography of tissue s...

Claims

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Application Information

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IPC IPC(8): G01D5/26
Inventor 苑立波罗昊
Owner GUILIN UNIV OF ELECTRONIC TECH
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