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首页> 外文期刊>Optics Letters >High-speed wavelength tunable DPSK demodulation using a phase modulator based loop mirror filter
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High-speed wavelength tunable DPSK demodulation using a phase modulator based loop mirror filter

机译：使用基于相位调制器的环路镜滤波器实现高速波长可调DPSK解调

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摘要

A high-speed wavelength tunable differential phase-shift-keying (DPSK) signal demodulator is presented using a phase modulator (PM) based fiber loop mirror filter. By controlling the birefringence of the PM inside the loop through electro-optic effect, wavelength tuning speed of tens of GHz and tuning range of over two free spectral ranges are achieved. Stable filter spectra with extinction ratio over 30 dB are obtained through the tuning process. By combining the birefringence of polarization maintaining fiber and PM, error-free demodulation performance is experimentally achieved throughout the wavelength tuning range for DPSK signals with flexible bit-rate range from 2.5 to 10 Gb/s. This design significantly improves the wavelength tuning speed and is potentially valuable for high-speed switching and tuning applications.
机译：提出了一种基于基于相位调制器（PM）的光纤环路镜滤波器的高速波长可调差分相移键控（DPSK）信号解调器。通过电光效应控制环路内PM的双折射，可实现数十GHz的波长调谐速度和超过两个自由光谱范围的调谐范围。通过调谐过程可获得消光比超过30 dB的稳定滤波器光谱。通过将保偏光纤和PM的双折射相结合，可以在DPSK信号的整个波长调谐范围内以2.5至10 Gb / s的灵活比特率在实验上实现无差错解调性能。该设计大大提高了波长调谐速度，对于高速开关和调谐应用具有潜在的价值。

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