Title :
A novel fabrication method for all-fiber, weakly fused, polarization beamsplitters
Author :
Wu, Cheng Wen ; Wu, Tzong-Lin ; Chang, Hung-Chun
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
fDate :
7/1/1995 12:00:00 AM
Abstract :
A simple method for fabricating single-mode fused couplers for polarization beamsplitting is presented. The coupler is extremely weakly fused such that the first polarization modulation waist in its power transfer characteristic is clearly extended. Due to such a feature, the coupler drawing process may accurately be stopped at the waist point by simply monitoring the power variations of the output ports. We have achieved an average extinction ratio of -23.7 dB at the throughput port and -23.8 dB at the coupled port at the designated wavelength. The polarization bandwidth obtained is 38 nm.<>
Keywords :
drawing (mechanical); optical communication equipment; optical elements; optical fibre couplers; optical fibre fabrication; optical fibre polarisation; all-fiber weakly fused polarization beamsplitters; average extinction ratio; coupled port; coupler drawing process; fabrication method; first polarization modulation waist; output ports; polarization bandwidth; polarization beamsplitting; power transfer characteristic; power variations; single-mode fused couplers; throughput port; waist point; Bandwidth; Birefringence; Extinction ratio; Fabrication; Monitoring; Optical fiber couplers; Optical fiber polarization; Optical polarization; Phase modulation; Throughput;
Journal_Title :
Photonics Technology Letters, IEEE
