Ferroelectric liquid-crystal polarization switching-based high-speed multiwavelength add/drop filters using fiber and array waveguide gratings

Ferroelectric Liquid Crystal Polarization Switching-based High Speed Multi-WavelengthAdd/Drop Filters using Fiber and Array Waveguide GratingsNabeel A. RizaCenter for Research & Education in Optics and Lasers (CREOL)and the Department of Electrical & Computer EngineeringUniversity of Central FloridaP. 0. Box 162700, Orlando, FL 32816-2700Tel: 407-823-6829; Fax: 407-823-3354email: riza@creol.ucf.eduA number of approaches have been used to implement programmable add/drop optical filters for wavelength divisionmultiplexed (WDM) optical communications. These include integrated-optic (10) acousto-optic tunable filters(AOTFs) [1], all-fiber mechanically tuned fiber Bragg grating (FBG) devices [2], 10 grating switch with 10 couplerdevices [3], array waveguide grating (AWG) multiplexer with 10 thermo-optic switches [4], FBG devices withmagnetic field tuning [5],

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