Analysis of polarization-independent tunable optical comb filter by cascading MZI and phase modulating Sagnac loop |
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Authors: | Jin-Jin Guo Yuanhong Yang |
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Affiliation: | a School of Instrumentation Science and Opto-electronics Engineering, BeiHang University, Beijing 100191, Chinab School of Electrical Engineering & Telecommunications, University of New South Wales, Sydney 2052, Australia |
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Abstract: | A novel scheme of tunable optical comb filter constructed by cascading a polarization-swapping MZI and a phase modulating Sagnac loop is proposed. The key features of this comb filter design are its polarization-independence and high speed in wavelength tuning. The wavelength tunability can be readily achieved by incorporating an electro-optic phase modulator into the Sagnac loop. In addition, the filter can be made amplitude adjustable as well. The filter will be desirable for multi-wavelength fiber lasers, multi-channel optical signal processing and optical WDM systems. |
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Keywords: | Comb filters Sagnac loop Tunable filters |
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