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

Volume

7

Issue

7

fYear

1995

fDate

7/1/1995 12:00:00 AM

Firstpage

786

Lastpage

788

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;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.393206

Filename

393206