摘要
提出利用钒酸钇晶体偏振干涉滤波器对密集波分复用光通讯系统信道光源 (分布反馈激光器 )的波长漂移进行监视 .由于通过改变钒酸钇晶体的温度可以移动滤波器透射谱的峰值位置 ,因此该方法可以实现无盲区波长监视 .在实验中 ,保持滤波器的光强透过率不变 ,通过测量相应的滤波器温度改变 ,取得了 0 .0 2nm的波长监视精度 .
A temperature-tunable polarization interference filter (PIF) made of YVO 4 crystal has been presented and applied for wavelength monitoring of a distributed feedback (DFB) laser in a dense wavelength-division-multiplexing (DWDM) optical communication system. This novel device offers a flexible way to monitor the operating wavelength of a transmitter over a wide capture range. Furthermore, the monitoring resolution of 0.02 nm can be obtained by tracking the temperature of the filter locked to a constant transmission value.
基金
theNaturalScienceFoundationofAnhuiProvince (No .0 10 4 2 4 0 2 )
关键词
激光稳定性
可调滤波器
双折射
光通讯
密集波分复用
laser stability
tunable filters
birefringence
optical communication
dense wavelength division multiplexing
