Share Email Print
cover

Proceedings Paper

Applications of new photorefractive materials in fiber optic devices
Author(s): Claire Gu; Yuan Xu; Yisi Liu; Jing Jong Pan; Fengqing Zhou; Henry He
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

The photorefractive effect is a phenomenon in which the local index of refraction is changed by the spatial variation of the light intensity. Although the phrase 'photorefractive effect' has been traditionally used for such effects in electro-optic materials, new materials, including photopolymers and photosensitive glasses, have been developd in recent years and are playing increasingly important roles in optical fiber communication systems. Photopolymers in combination with liquid crystals are ideal materials for wavelength selective tunable devices. The improved optical quality and large dynamic range of photopolymers make them promising materials for holographic recording. Holographic gratings recorded in photopolymers can be employed as distributed Bragg reflectors. The large birefringence of liquid crystals can be used to tune the index of refraction to cover a large wavelength range. In addition, birefringence of liquid crystals can be used to tune the index of refraction to cover a large wavelength range. In addition, the combination of photopolymer and liquid crystal also leads to a new material known as holographic polymer dispersed liquid crystal (H-PDLC) which provides a medium for switchable holograms. Photonic devices made of these materials can be easily incorporated into an optical fiber system because of the low index of refraction of polymers and liquid crystals, and their relatively easy processing techniques. Besides photopolymers, photosensitive glasses are also promising for applications in fiber optic systems. Fiber Bragg gratings (FBGs) have been used as bandpass filters and dispersion compensators. In this paper, we describe the applications of photopolymers, H-PDLCs, and FBGs in fiber optic devices. Specifically, we will describe our recent works on photonic devices such as filters, switches, and dispersion compensators for WDM systems.

Paper Details

Date Published: 20 November 2002
PDF: 11 pages
Proc. SPIE 4803, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII, (20 November 2002); doi: 10.1117/12.452636
Show Author Affiliations
Claire Gu, Univ. of California/Santa Cruz (United States)
Yuan Xu, Univ. of California/Santa Cruz (United States)
Yisi Liu, Univ. of California/Santa Cruz (United States)
Jing Jong Pan, Lightwaves 2020 Inc. (United States)
Fengqing Zhou, Lightwaves 2020 Inc. (United States)
Henry He, Lightwaves 2020 Inc. (United States)


Published in SPIE Proceedings Vol. 4803:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications VIII
Francis T. S. Yu; Ruyan Guo, Editor(s)

© SPIE. Terms of Use
Back to Top