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首页> 外文期刊>IEEE Microwave and Guided Wave Letters >Group velocity dispersion cancellation and additive group delays by cascaded fiber Bragg gratings in transmission
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Group velocity dispersion cancellation and additive group delays by cascaded fiber Bragg gratings in transmission

机译：级联光纤布拉格光栅在传输中的群速度色散消除和加性群延迟

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摘要

We have demonstrated that cascaded fiber Bragg gratings can provide delays of propagating pulses with minimal pulse reshaping. The grating pair used exhibited an overlap transmission region centered at 1551.05 nm, where both gratings contribute to the group delay and the group velocity dispersion (GVD) was canceled. Using wavelength tunable pulses spectrally sliced from a mode-locked fiber laser, the measurement was performed in the time domain with single picosecond resolution. Both gratings were 3 mm long and a maximum group delay of 15 ps was measured for the cascaded sequence. This compound grating configuration can be implemented as encoders and decoders in spread spectrum CDMA systems.
机译：我们已经证明，级联光纤布拉格光栅可以以最小的脉冲整形提供传播脉冲的延迟。所使用的光栅对表现出以1551.05 nm为中心的重叠透射区域，其中两个光栅都对群延迟有贡献，并且消除了群速度色散（GVD）。使用从锁模光纤激光器光谱切片的波长可调脉冲，可以在时域内以单皮秒分辨率进行测量。两个光栅的长度均为3 mm，对于级联序列，最大群延迟为15 ps。这种复合光栅配置可以实现为扩频CDMA系统中的编码器和解码器。

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