Proposal and analysis of an ultrashort directional-coupler polarization splitter with an NLC coupling layer

Author

Lin, Kuen-Cherng ; Chuang, Wei-Ching ; Lee, Wei-Yu

Author_Institution

Dept. of Electr. Eng., Tatung Inst. of Technol., Taipei, Taiwan

Volume

14

Issue

11

fYear

1996

fDate

11/1/1996 12:00:00 AM

Firstpage

2547

Lastpage

2553

Abstract

We propose a novel, high-performance directional-coupler polarization splitter using a nematic liquid crystal (NLC) as the coupling layer. The beam propagation method is used to investigate the propagation characteristics of the device under various conditions. Results of numerical calculations relevant to the design conditions are presented. Because of the large birefringence of NLC, a very short device length of 140 μm is achievable at a high extinction ratio of 28 dB

Keywords

birefringence; finite difference methods; liquid crystal devices; nematic liquid crystals; optical directional couplers; optical polarisers; 140 mum; beam propagation method; birefringence; design conditions; device length; finite difference BPM; high extinction ratio; ion exchanged glass waveguide; nematic liquid crystal coupling layer; numerical calculation; propagation characteristics; single-mode fiber system compatibility; slab waveguides; ultrashort directional-coupler polarization splitter; Birefringence; Extinction ratio; Liquid crystal displays; Optical devices; Optical fiber polarization; Optical receivers; Optical refraction; Optical waveguides; Proposals; Tellurium;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.548153

Filename

548153