Title :
All-fiber Brewster windows made with extremely weakly fused asymmetric coupler
Author :
Wu, Cheng Wen ; Lu, Shuh-Tai ; Wu, Tzong-Lin ; Chang, Hung-Chun
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
New type of fiber-optic Brewster windows made with extremely weakly fused asymmetric couplers is reported. The first polarization modulation waist point in the power transfer curve of the asymmetric coupler was taken as the stopping point in the coupler drawing process. A 20-percent power with 26.4-dB extinction ratio at the coupled port and a 80-percent power with 2.5-dB extinction ratio at the throughput port at the designated wavelength have been achieved, with the Brewster bandwidth being 38 nm.<>
Keywords :
drawing (mechanical); optical fibre couplers; optical fibre fabrication; optical fibre polarisation; optical fibres; optical modulation; optical windows; Brewster bandwidth; all-fiber Brewster windows; coupled port; coupler drawing process; designated wavelength; extinction ratio; extremely weakly fused asymmetric coupler; polarization modulation waist point; power transfer curve; throughput port; Bandwidth; Extinction ratio; Fiber lasers; Optical coupling; Optical fiber couplers; Optical fiber devices; Optical fiber polarization; Optical fiber sensors; Optical polarization; Throughput;
Journal_Title :
Photonics Technology Letters, IEEE
