Analysis and experiment of thin metal-clad fiber polarizer with index overlay

Author

Tseng, Shiao-Min ; Hsu, Kuang-Yu ; Wei, Hon-Sco ; Chen, Kun-Fa

Author_Institution

Dept. of Electr. Eng., Nat. Tsing Hua Univ., Hsinchu, Taiwan

Volume

9

Issue

5

fYear

1997

fDate

5/1/1997 12:00:00 AM

Firstpage

628

Lastpage

630

Abstract

Fiber polarizers, based on side-polished single-mode fibers covered with a deposited thin metal film and index overlay, were investigated by us. By modeling their interaction region as a layered planar structure and using the quasi-ray-optic method, we theoretically examined the resonant absorption of light in this structure. In such an approach, the characteristics of fiber polarizers can be found without solving the refractive index of any surface plasmon mode. Fiber polarizers with different liquid overlays were presented by us and polarization extinction ratio about 60 dB was achieved. Our theoretical analyzes agreed with experimental results. The advantages of our approach are discussed.

Keywords

metallic thin films; optical fibre cladding; optical fibre theory; optical fibres; optical polarisers; ray tracing; refractive index; resonant states; surface plasmons; fiber polarizers; index overlay; interaction region; layered planar structure; liquid overlays; polarization extinction ratio; quasi-ray-optic method; refractive index; resonant absorption; side-polished single-mode fibers; surface plasmon mode; thin metal film; thin metal-clad fiber polarizer; Absorption; Optical fiber polarization; Optical fiber theory; Optical surface waves; Optical waveguides; Planar waveguides; Plasmons; Propagation constant; Reflectivity; Resonance;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.588161

Filename

588161