Compact Variable ${\\rm TE}$ - ${\\rm TM}$ Polarization Splitter Based on Simplified Coherent Couplin

Author

Lin, Chia-Wei ; Huang, Wen-Hung ; Wang, Way-Seen

Author_Institution

Grad. Inst. of Electron. Eng., Nat. Taiwan Univ., Taipei

Volume

27

Issue

13

fYear

2009

fDate

7/1/2009 12:00:00 AM

Firstpage

2282

Lastpage

2288

Abstract

A compact-sized electrically tunable TE-TM mode splitter composed of a mode converter and an asymmetric Y-branch structure is presented. The asymmetric Y-branch consists of a straight and a bent waveguides to split two polarization modes based on the mode-sorting effect. To shorten the device length, a simplified coherently coupled-bending structure is utilized for the bent waveguide. Experimental results show that the device length is reduced about 52%, extinction ratios of both TE and TM modes are higher than 25 dB, yet the applied voltage is not significantly increased.

Keywords

convertors; electro-optical devices; extinction coefficients; light polarisation; lithium compounds; optical beam splitters; optical polarisers; optical waveguides; ridge waveguides; LiNbO₃; asymmetric Y-branch structure; bent waveguide; electrically tunable mode splitter; electro-optic device; extinction ratio; lithium niobate; mode converter; mode-sorting effect; polarization mode; ridge waveguide; simplified coherent coupling; variable TE-TM polarization splitter; Electro-optic device; optical polarization splitter; ridge waveguide; simplified coherent coupling;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2008.2006995

Filename

4815484

Compact Variable - Polarization Splitter Based on Simplified Coherent Couplin

Lin, Chia-Wei ; Huang, Wen-Hung ; Wang, Way-Seen

jour

Compact Variable ${\\rm TE}$ - ${\\rm TM}$ Polarization Splitter Based on Simplified Coherent Couplin