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High-speed modulation and demodulation system and method based on tunable laser light source

A laser light source, modulation and demodulation technology, used in instruments, measurement devices, and the use of wave/particle radiation, etc., can solve the problems of slow demodulation speed and long scanning period, and achieve the improvement of demodulation efficiency, reduction of scanning times, strong The effect of practicality

Pending Publication Date: 2022-05-13
武汉烽理光电技术有限公司 +1
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Problems solved by technology

[0005] In view of this, it is necessary to provide a high-speed modulation and demodulation system and method based on a tunable laser light source to solve the problem of long scanning period, The problem of slow demodulation

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  • High-speed modulation and demodulation system and method based on tunable laser light source
  • High-speed modulation and demodulation system and method based on tunable laser light source
  • High-speed modulation and demodulation system and method based on tunable laser light source

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Embodiment Construction

[0042] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.

[0043] The present invention provides a high-speed modulation and demodulation system and method based on a tunable laser light source, which will be described in detail below.

[0044] An embodiment of the present invention provides a high-speed modulation and demodulation system based on a tunable laser light source, and its structural diagram is as follows figure 1 As shown, the high-speed modulation and demodulation system 100 based on the tunable laser light source includes:

[0045] Tunable laser light source module 101, pulse modulation module 102, grating array to be tested 103, photo...

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Abstract

The invention discloses a high-speed modulation and demodulation system and method based on a tunable laser light source, and the system comprises a tunable laser light source module which is used for generating frequency sweeping light in a set wavelength range according to a preset coding rule; the pulse modulation module is used for chopping the sweep frequency light to obtain pulse light with fixed pulse width; the grating array to be measured is used for reflecting the pulsed light to obtain reflected light; the photoelectric conversion module is used for receiving the reflected light and converting the reflected light into an analog electric signal; the data acquisition module is used for sampling the analog electric signal to obtain a digital electric signal; and the demodulation module is used for decoding the digital electric signal to obtain the central wavelength of the grating array to be detected. According to the invention, the problems of long scanning period and low demodulation speed of an optical fiber system based on a tunable laser light source in high-frequency vibration detection in the prior art are solved.

Description

technical field [0001] The invention relates to the technical field of optical fiber sensing, in particular to a high-speed modulation and demodulation system and method based on a tunable laser light source. Background technique [0002] The fiber grating sensor system is a sensor system with light as the carrier and optical fiber as the medium. In addition to the advantages of small size, light weight, wide bandwidth, high sensitivity, strong anti-electromagnetic interference and strong corrosion resistance, it also has the advantages of not being affected by optical power fluctuations, integrating sensing and transmission, easy to manufacture, and embedded materials. Inside, the measurement of various physical quantities such as stress, strain, and temperature is realized. Compared with traditional electrical sensing systems, this technology has more advantages in harsh environments such as strong electromagnetic interference, flammable and explosive or thermal vacuum. ...

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Application Information

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IPC IPC(8): G01H9/00
CPCG01H9/004
Inventor 李凯徐一旻宋珂王月明马俊杰唐婉汪凤鸣
Owner 武汉烽理光电技术有限公司
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