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Liquid-crystal-cladding fiber Bragg gratings with electrically controllable polarization-dependent characteristics

Liquid-crystal-cladding fiber Bragg gratings with electrically controllable polarization-dependent characteristics
Liquid-crystal-cladding fiber Bragg gratings with electrically controllable polarization-dependent characteristics
An electrically controllable fiber Bragg grating (FBG) with polarization-dependent characteristics is described. The optic axis of a liquid crystal (LC) can be rearrangeable by means of external electric fields, which results in the change of an effective refractive index of an LC. The reflectivity and Bragg wavelength of an LC-cladding FBG can be controlled according to the refractive index of surrounding region of the fiber which is determined by the refractive index of the LC-cladding. The tuning ranges of the LC-cladding FBG were ~4.6 dB of the reflectivity and ~0.3 nm of Bragg wavelength based on unpolarized light, respectively, and polarization isolation of 1.5 dB was achieved at 100 V(p-p) based on polarized light.
electro-optics, fiber bragg grating, liquid crystal, etching, polarization dependency
0021-4922
4044-4050
Baek, Seungin
5ed7385c-2343-4011-907e-550efb61ace5
Roh, Sookyoung
6610ed93-4ec7-4a8c-85bf-8c91eccb6cff
Na, Jun-Hee
096aebfa-8e3c-40d1-a7fc-b46dc22ddd83
Jeong, Yoonchan
94ab6f5b-7623-4061-8598-8de2e7aa751e
Jeong, Cherlhyun
4931cb8a-7211-43d5-9c02-840f71c8c079
Lee, Sin-Doo
3f409483-4882-4cb8-9484-1d340d451322
Lee, Byoungho
43dfa9db-b2d8-4a26-9594-2d0e484f8388
Baek, Seungin
5ed7385c-2343-4011-907e-550efb61ace5
Roh, Sookyoung
6610ed93-4ec7-4a8c-85bf-8c91eccb6cff
Na, Jun-Hee
096aebfa-8e3c-40d1-a7fc-b46dc22ddd83
Jeong, Yoonchan
94ab6f5b-7623-4061-8598-8de2e7aa751e
Jeong, Cherlhyun
4931cb8a-7211-43d5-9c02-840f71c8c079
Lee, Sin-Doo
3f409483-4882-4cb8-9484-1d340d451322
Lee, Byoungho
43dfa9db-b2d8-4a26-9594-2d0e484f8388

Baek, Seungin, Roh, Sookyoung, Na, Jun-Hee, Jeong, Yoonchan, Jeong, Cherlhyun, Lee, Sin-Doo and Lee, Byoungho (2006) Liquid-crystal-cladding fiber Bragg gratings with electrically controllable polarization-dependent characteristics. Japanese Journal of Applied Physics, 45 (5A), 4044-4050. (doi:10.1143/JJAP.45.4044).

Record type: Article

Abstract

An electrically controllable fiber Bragg grating (FBG) with polarization-dependent characteristics is described. The optic axis of a liquid crystal (LC) can be rearrangeable by means of external electric fields, which results in the change of an effective refractive index of an LC. The reflectivity and Bragg wavelength of an LC-cladding FBG can be controlled according to the refractive index of surrounding region of the fiber which is determined by the refractive index of the LC-cladding. The tuning ranges of the LC-cladding FBG were ~4.6 dB of the reflectivity and ~0.3 nm of Bragg wavelength based on unpolarized light, respectively, and polarization isolation of 1.5 dB was achieved at 100 V(p-p) based on polarized light.

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More information

Published date: 2006
Keywords: electro-optics, fiber bragg grating, liquid crystal, etching, polarization dependency

Identifiers

Local EPrints ID: 46901
URI: https://eprints.soton.ac.uk/id/eprint/46901
ISSN: 0021-4922
PURE UUID: 003b20ed-f381-4d29-8598-53707f755f0b

Catalogue record

Date deposited: 27 Jul 2007
Last modified: 13 Mar 2019 21:01

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