Power and wavelength response of H-LITES sensor based on FPI using phase demodulation method. (IMAGE)

Light Publishing Center, Changchun Institute of Optics, Fine Mechanics And Physics, CAS

Power and wavelength response of H-LITES sensor based on FPI using phase demodulation method.

Caption

a, Using the phase demodulation method, the peak-to-peak values of H-LITES signal were generally consistent, with an average of 55.54° and a standard deviation of 0.64°. The phase demodulation method is immune to disturbances from the laser source, and can produce excellent detection performance even with a low-power probe laser. b, The peak-to-peak values remained constant at wavelengths from 1536 nm to 1555 nm. The phase demodulation method is approximately wavelength-independent, with the same sensitivity at any wavelength; it does not require the wavelength to be fixed at the Q-point, and is immune to laser wavelength disturbances. Q-point drifting due to ambient interference can be overcome using the phase demodulation method in the FPI.

Credit

by Ziting Lang, Shunda Qiao, and Yufei Ma

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Credit must be given to the creator.

License

CC BY

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