Spectral modification of type IA fibre Bragg gratings by high power near infra-red lasers

Kyriacos Kalli; A. George Simpson; Kaimin Zhou; Lin Zhang; David Birkin; Tim Ellingham; Ian Bennion

doi:10.1117/12.662315

Spectral modification of type IA fibre Bragg gratings by high power near infra-red lasers

Kyriacos Kalli^*, A. George Simpson, Kaimin Zhou, Lin Zhang, David Birkin, Tim Ellingham, Ian Bennion

^*Corresponding author for this work

Aston Institute of Photonic Technologies (AiPT)

Research output: Contribution to journal › Conference article › peer-review

Abstract

We report the first experimental measurements on the spectral modification of Type IA fibre Bragg gratings, incorporated in an optical network, which result from the use of high-power, near infrared lasers. The fibre grating properties are modified in a controlled manner by exploiting the characteristics of the inherent 1400nm absorption band of the optical fibre, which grows in strength during the Type IA grating inscription. If the fibre network is illuminated with a high power laser, having an emission wavelength coincident with the absorption band, the Type IA centre wavelength and chirp can be modified. Furthermore, partial grating erasure is demonstrated. This has serious implications when using Type IA gratings in an optical network, as their spectrum can be modified using purely optical methods (no external heating source acts on the fibre), and to their long-term stability as the grating is shown to decay. Conversely, suitably stabilised gratings can be spectrally tailored, for tuning fibre lasers or edge filter modification in sensing applications, by purely optical means.

Original language	English
Article number	61930Y
Journal	Proceedings of SPIE - International Society for Optical Engineering
Volume	6193
DOIs	https://doi.org/10.1117/12.662315
Publication status	Published - 9 Aug 2006
Event	Reliability of Optical Fiber Components, Devices, Systems, and Networks III - Strasbourg, United Kingdom Duration: 3 Apr 2006 → 4 Apr 2006

Bibliographical note

Copyright 2006 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

Keywords

Fibre Bragg gratings
Optical fibre sensors
Photosensitivity
Type IA grating
Wavelength tuning

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10.1117/12.662315

Spectral modification of type IA fibre Bragg gratings by high power near infra-red lasers
Copyright 2006 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.
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title = "Spectral modification of type IA fibre Bragg gratings by high power near infra-red lasers",

abstract = "We report the first experimental measurements on the spectral modification of Type IA fibre Bragg gratings, incorporated in an optical network, which result from the use of high-power, near infrared lasers. The fibre grating properties are modified in a controlled manner by exploiting the characteristics of the inherent 1400nm absorption band of the optical fibre, which grows in strength during the Type IA grating inscription. If the fibre network is illuminated with a high power laser, having an emission wavelength coincident with the absorption band, the Type IA centre wavelength and chirp can be modified. Furthermore, partial grating erasure is demonstrated. This has serious implications when using Type IA gratings in an optical network, as their spectrum can be modified using purely optical methods (no external heating source acts on the fibre), and to their long-term stability as the grating is shown to decay. Conversely, suitably stabilised gratings can be spectrally tailored, for tuning fibre lasers or edge filter modification in sensing applications, by purely optical means.",

keywords = "Fibre Bragg gratings, Optical fibre sensors, Photosensitivity, Type IA grating, Wavelength tuning",

author = "Kyriacos Kalli and Simpson, {A. George} and Kaimin Zhou and Lin Zhang and David Birkin and Tim Ellingham and Ian Bennion",

note = "Copyright 2006 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. ; Reliability of Optical Fiber Components, Devices, Systems, and Networks III ; Conference date: 03-04-2006 Through 04-04-2006",

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T1 - Spectral modification of type IA fibre Bragg gratings by high power near infra-red lasers

AU - Kalli, Kyriacos

AU - Simpson, A. George

AU - Zhou, Kaimin

AU - Zhang, Lin

AU - Birkin, David

AU - Ellingham, Tim

AU - Bennion, Ian

N1 - Copyright 2006 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

PY - 2006/8/9

Y1 - 2006/8/9

N2 - We report the first experimental measurements on the spectral modification of Type IA fibre Bragg gratings, incorporated in an optical network, which result from the use of high-power, near infrared lasers. The fibre grating properties are modified in a controlled manner by exploiting the characteristics of the inherent 1400nm absorption band of the optical fibre, which grows in strength during the Type IA grating inscription. If the fibre network is illuminated with a high power laser, having an emission wavelength coincident with the absorption band, the Type IA centre wavelength and chirp can be modified. Furthermore, partial grating erasure is demonstrated. This has serious implications when using Type IA gratings in an optical network, as their spectrum can be modified using purely optical methods (no external heating source acts on the fibre), and to their long-term stability as the grating is shown to decay. Conversely, suitably stabilised gratings can be spectrally tailored, for tuning fibre lasers or edge filter modification in sensing applications, by purely optical means.

AB - We report the first experimental measurements on the spectral modification of Type IA fibre Bragg gratings, incorporated in an optical network, which result from the use of high-power, near infrared lasers. The fibre grating properties are modified in a controlled manner by exploiting the characteristics of the inherent 1400nm absorption band of the optical fibre, which grows in strength during the Type IA grating inscription. If the fibre network is illuminated with a high power laser, having an emission wavelength coincident with the absorption band, the Type IA centre wavelength and chirp can be modified. Furthermore, partial grating erasure is demonstrated. This has serious implications when using Type IA gratings in an optical network, as their spectrum can be modified using purely optical methods (no external heating source acts on the fibre), and to their long-term stability as the grating is shown to decay. Conversely, suitably stabilised gratings can be spectrally tailored, for tuning fibre lasers or edge filter modification in sensing applications, by purely optical means.

KW - Fibre Bragg gratings

KW - Optical fibre sensors

KW - Photosensitivity

KW - Type IA grating

KW - Wavelength tuning

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Spectral modification of type IA fibre Bragg gratings by high power near infra-red lasers

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