Summary

     GM8050B 12 channel optical fiber grating demodulator with fast tunable laser light source, wavelength tunable laser by changing the intensity of the reflected light scanning FBG sensor line, calculate the center wavelength of the FBG sensor, the sensor according to the wavelength response characteristic parameters calculated the detection point of the temperature, stress and other physical parameters. The performance of demodulation demodulation module is mainly decided by the light source, compared with the traditional scheme of fast tunable laser light source output laser power density, wavelength accuracy, wavelength repeatability, reproducibility, power output stability indexes have great advantages, do not need to increase the optical path of complex and auxiliary circuit can realize high precision demodulation GM8050B is a small optical fiber grating sensor demodulation module by a PC control channel, it can be used with random distribution software, PC machine, and the external device is composed of a Prague grating sensor demodulation system and high precision spectrum analysis system. The demodulation module can be applied to various types of grating sensor, grating sensor system according to the different temperature conditions for reaction, draw a clear and complete spectrum graphics, not only shows the offset of the center wavelength.

performance index