Polarization-Independent Multiwavelength-Switchable Filter Based on Polarization Beam Splitter and Fiber Coupler

다국어 초록 (Multilingual Abstract)

A polarization-independent multiwavelength-switchable fiber filter is proposed based on a polarization beam splitter and fiber coupler, which can function as a polarization-independent transmission or reflection-type interleaving filter. The proposed filter consists of a polarization beam splitter and a Sagnac birefringence loop composed of a 50:50 coupler, high birefringent fibers, and two quarter-wave plates. In the proposed filter, a transmission-type interleaver with a channel isolation > 18 dB or a reflection-type one with a channel isolation of ~3 dB, whose channel spacing and switching dis-placement were 0.8 and 0.4 nm in common, respectively, could be obtained. A channel interleaving op-eration could be performed by the proper control of waveplates within the Sagnac birefringence loop.

참고문헌 (Reference)

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