High-speed frequency swept light source used for grating demodulator

Ping Han

doi:10.1117/12.2031365

Abstract

For high-precision, the grating demodulator based on WDM theory is widely used. In order to satisfy the request of high-speed and high-precision grating demodulator using F-P tuned filter, a high-speed frequency swept laser light source based on semiconductor optical amplifier is designed. This light source uses the work pattern of Fourier Domain Mode Locking and ring cavity geometry. It can provide narrow band tuning light using for grating demodulation, and the tuned frequency is above 4000Hz, the bandwidth is 40nm. Its output light power is higher than 12dBm, and it can greatly improve the speed and SNR of grating demodulator. Under the conditions of swept speed above 4000Hz, the precision of grating demodulator using this light source can reach 2pm.

Citation Download Citation

Ping Han, Ping Han, "High-speed frequency swept light source used for grating demodulator", Proc. SPIE 8924, Fourth Asia Pacific Optical Sensors Conference, 89240M (15 October 2013); doi: 10.1117/12.2031365; https://doi.org/10.1117/12.2031365

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