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http://dx.doi.org/10.5370/JEET.2009.4.3.405

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

Lee, Yong-Wook (School of Electrical Engineering, Pukyong National University)
Publication Information
Journal of Electrical Engineering and Technology / v.4, no.3, 2009 , pp. 405-409 More about this Journal
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 ${\sim}3$ dB, whose channel spacing and switching displacement were 0.8 and 0.4 nm in common, respectively, could be obtained. A channel interleaving operation could be performed by the proper control of waveplates within the Sagnac birefringence loop.
Keywords
multiwavelength; switching; optical filter; polarization beam splitter; high birefringent fiber;
Citations & Related Records

Times Cited By SCOPUS : 5
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