通信中长周期光纤光栅温度敏感性的补偿方法

Compensation technology for the temperature sensitivity of long-period fiber gratings in communications

为减小环境温度变化对通信中长周期光纤光栅(LPFG)器件谐振波长的影响,文章设计了一种补偿谐振波长漂移的方案,即在光栅表面涂覆一层随温度升高折射率变大的薄膜。计算结果表明,该方案是可行的,实现了谐振波长的零漂移,在通信领域具有广阔的应用前景。

In order to reduce the effects of the ambient temperature variations on the resonant wavelength ot the Lon-Period Fibet Grating （LPFG） devices in communications, a scheme for the compensation of its drift is designed, i.e. coating the grating with a thin film whose refractive index increases with the rising temperature. The calculation results show that this scheme is feasible and will find extensive applications in communications as there will be no drift in the resonate wavelength.