为满足高速高精光栅解调器的要求,研制了一种基于半导体光放大器(SOA)的高速扫频激光光源。采用傅里叶畴模式锁定(FDML)的工作模式和环形腔结构,能够提供调谐频率高于2000 Hz的窄带调谐光用于光栅解调,输出光功率大于12 dBm,大大提高了光栅解调的速度和信噪比。使用该光源的光栅解调器在扫描频率不低于2 000 Hz的条件下,精度能够达到2 pm。 To meet the requirements of high-speed and high-precision grating demodulator, a high-speed swept-frequency laser source based on semiconductor optical amplifier (SOA) was developed. Using Fourier domain mode locking (FDML) mode of operation and ring cavity structure, it is possible to provide narrow-band tuning light with tuning frequencies above 2000 Hz for raster demodulation and output optical powers greater than 12 dBm, greatly improving the performance of the raster demodulated Speed ​​and signal to noise ratio. The grating demodulator using this light source can achieve an accuracy of 2 pm with a scanning frequency of 2,000 Hz or less.