Title :
Compact Design of an Electrically Tunable and Rotatable Polarizer Based on a Liquid Crystal Photonic Bandgap Fiber
Author :
Wei, Lei ; Alkeskjold, Thomas Tanggaard ; Bjarklev, Anders
Author_Institution :
Dept. of Photonics Eng., Tech. Univ. of Denmark, Lyngby, Denmark
Abstract :
In this letter, a compact electrically controlled broadband liquid crystal (LC) photonic bandgap fiber polarizer is designed and fabricated. A good fiber coupling quality between two single-mode fibers and one 10-mm-long LC-filled photonic crystal fiber is obtained and protected by using SU-8 fiber fixing structures during the device assembly. The total insertion loss of this all-in-fiber device is 2.7 dB. An electrically tunable polarization extinction ratio of 21.3 dB is achieved with 45deg rotatable transmission axis as well as switched on and off in the wavelength range of 1300-1600 nm.
Keywords :
electro-optical devices; holey fibres; liquid crystal devices; optical design techniques; optical fabrication; optical fibre losses; optical polarisers; optical rotation; optical tuning; photonic band gap; photonic crystals; LC-filled photonic crystal fiber design; SU-8 fiber fixing structures; electrically tunable polarizer; fiber coupling quality; insertion loss; liquid crystal photonic bandgap fiber; optical fabrication; rotatable polarizer design; single-mode fibers; size 10 mm; wavelength 1300 nm to 1600 nm; Fabrication; liquid crystals (LCs); optical fiber devices; polarization;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2009.2028156
