The multi-phase-shifts fiber grating with cascade phase-shifts can be used as bandwidth filter and its bandwidth can be widened by increasing cascade numbers.
相移级联光栅可用作带宽滤波器，通过增加相移光栅的级联数增加带宽。
The multi-phase-shifts fiber grating with cascade phase-shifts can be used as bandwidth filter and its bandwidth can be widened by increasing cascade numbers.
相移级联光栅可用作带宽滤波器，通过增加相移光栅的级联数增加带宽。
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