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Fabrications and applications of CO2-laser-induced long period fiber gratings

Fabrications and applications of CO2-laser-induced long period fiber gratings
Fabrications and applications of CO2-laser-induced long period fiber gratings
This paper presents a systematic review of recent developments in long period fiber gratings (LPFGs) induced by the CO2 laser irradiation technique. Firstly, various fabrication techniques based on CO2 laser irradiations are demonstrated to inscribe a LPFG in different types of optical fibers such as conventional glass fibers, solid-core photonic crystal fibers, and air-core photonic bandgap fibers. Secondly, possible mechanisms, e.g. residual stress relaxation, glass structure changes, and physical deformation, of refractive index modulations in the CO2-laser-induced LPFGs are analysed. Thirdly, asymmetrical mode coupling, resulting from single-side laser irradiation, is discussed to understand unique optical properties of the CO2-laser-induced LPFGs. Fourthly, several techniques, e.g. hydrogen loading, prestrain, and post-treatment with tensile strain, are proposed to enhance the efficiency of grating fabrications. Fifthly, the sensing applications of CO2-laser-induced LPFGs are investigated to develop various LPFG-based temperature, strain, bend, twist, pressure, and biochemical sensors. Finally, the communication applications of the CO2-laser induced LPFGs are investigated to develop various LPFG-based band-rejection filters, gain equalizers, polarizers and couplers.
Wang, Yiping
3da133a6-980c-4622-9c63-4e691fc0cae1
Wang, Yiping
3da133a6-980c-4622-9c63-4e691fc0cae1

Wang, Yiping (2010) Fabrications and applications of CO2-laser-induced long period fiber gratings. FOFS 2010, Switzerland. 28 Jun - 03 Jul 2010.

Record type: Conference or Workshop Item (Other)

Abstract

This paper presents a systematic review of recent developments in long period fiber gratings (LPFGs) induced by the CO2 laser irradiation technique. Firstly, various fabrication techniques based on CO2 laser irradiations are demonstrated to inscribe a LPFG in different types of optical fibers such as conventional glass fibers, solid-core photonic crystal fibers, and air-core photonic bandgap fibers. Secondly, possible mechanisms, e.g. residual stress relaxation, glass structure changes, and physical deformation, of refractive index modulations in the CO2-laser-induced LPFGs are analysed. Thirdly, asymmetrical mode coupling, resulting from single-side laser irradiation, is discussed to understand unique optical properties of the CO2-laser-induced LPFGs. Fourthly, several techniques, e.g. hydrogen loading, prestrain, and post-treatment with tensile strain, are proposed to enhance the efficiency of grating fabrications. Fifthly, the sensing applications of CO2-laser-induced LPFGs are investigated to develop various LPFG-based temperature, strain, bend, twist, pressure, and biochemical sensors. Finally, the communication applications of the CO2-laser induced LPFGs are investigated to develop various LPFG-based band-rejection filters, gain equalizers, polarizers and couplers.

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More information

e-pub ahead of print date: 2010
Venue - Dates: FOFS 2010, Switzerland, 2010-06-28 - 2010-07-03
Organisations: Optoelectronics Research Centre

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Local EPrints ID: 340344
URI: http://eprints.soton.ac.uk/id/eprint/340344
PURE UUID: 4ebd4647-175b-4e4f-9768-64e5794d29b3

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Date deposited: 19 Jun 2012 13:50
Last modified: 04 Sep 2019 16:31

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