Highly refractive index sensitive femtosecond laser inscribed long period gratings

Edward Davies; Kyriacos Kalli; Charalambos Koutsides; Lin Zhang

doi:10.1117/12.885993

Highly refractive index sensitive femtosecond laser inscribed long period gratings

Edward Davies^*, Kyriacos Kalli, Charalambos Koutsides, Lin Zhang

^*Corresponding author for this work

Aston Institute of Photonic Technologies (AiPT)

Research output: Chapter in Book/Published conference output › Conference publication

Abstract

The distinct behaviour of femtosecond laser inscribed long period gratings, with a non-uniform index perturbation within the optical fibre core, has been studied experimentally. The non-uniform laser-induced perturbation results in light coupling from the core mode to a greater number of cladding modes than is the case with their UV laser inscribed counterparts, and this is made evident from the surrounding refractive index (SRI) grating response. Femtosecond inscribed long period gratings are shown to simultaneously couple to multiple sets of cladding modes. A 400μm LPG is shown to result in attenuation peaks that have both blue and red wavelength shifts over a 1250nm to 1700nm wavelength range. This gives rise to SRI sensitivities far greater than anything achievable by monitoring a single attenuation peak. The maximum sensitivity produced by monitoring a single attenuation peak was 1106nm/RIU, whereas monitoring opposing wavelength shifts resulted in a significantly improved sensitivity of 1680nm/RIU.

Original language	English
Title of host publication	21st international conference on Optical Fiber Sensors
Editors	Wojtek J. Bock, Jacques Albert, Xiaoyi Bao
Place of Publication	Bellingham, WA (US)
Publisher	SPIE
Number of pages	4
ISBN (Print)	978-0-8194-8246-4
DOIs	https://doi.org/10.1117/12.885993
Publication status	Published - 17 May 2011
Event	21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada Duration: 15 May 2011 → 19 May 2011 http://www.ofs21.org/

Publication series

Name	SPIE Proceedings
Publisher	SPIE
Volume	7753
ISSN (Print)	0277-786X

Conference

Conference	21st International Conference on Optical Fiber Sensors
Abbreviated title	OFS21
Country/Territory	Canada
City	Ottawa, ON
Period	15/05/11 → 19/05/11
Internet address	http://www.ofs21.org/

Bibliographical note

Edward Davies; Kyriacos Kalli; Charalambos Koutsides and Lin Zhang, "Highly refractive index sensitive femtosecond laser inscribed long period gratings", 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539H (2011).

Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

http://dx.doi.org/10.1117/12.885993

Keywords

femtosecond laser
long period grating
refractive index

Access to Document

10.1117/12.885993

Highly refractive index sensitive femtosecond laser
Edward Davies; Kyriacos Kalli; Charalambos Koutsides and Lin Zhang, "Highly refractive index sensitive femtosecond laser inscribed long period gratings", 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539H (2011). Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.885993
Final published version, 668 KB

http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1347152

Cite this

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title = "Highly refractive index sensitive femtosecond laser inscribed long period gratings",

abstract = "The distinct behaviour of femtosecond laser inscribed long period gratings, with a non-uniform index perturbation within the optical fibre core, has been studied experimentally. The non-uniform laser-induced perturbation results in light coupling from the core mode to a greater number of cladding modes than is the case with their UV laser inscribed counterparts, and this is made evident from the surrounding refractive index (SRI) grating response. Femtosecond inscribed long period gratings are shown to simultaneously couple to multiple sets of cladding modes. A 400μm LPG is shown to result in attenuation peaks that have both blue and red wavelength shifts over a 1250nm to 1700nm wavelength range. This gives rise to SRI sensitivities far greater than anything achievable by monitoring a single attenuation peak. The maximum sensitivity produced by monitoring a single attenuation peak was 1106nm/RIU, whereas monitoring opposing wavelength shifts resulted in a significantly improved sensitivity of 1680nm/RIU.",

keywords = "femtosecond laser, long period grating, refractive index",

author = "Edward Davies and Kyriacos Kalli and Charalambos Koutsides and Lin Zhang",

note = "Edward Davies; Kyriacos Kalli; Charalambos Koutsides and Lin Zhang, {"}Highly refractive index sensitive femtosecond laser inscribed long period gratings{"}, 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539H (2011). Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.885993; 21st International Conference on Optical Fiber Sensors, OFS21 ; Conference date: 15-05-2011 Through 19-05-2011",

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month = may,

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Davies, E, Kalli, K, Koutsides, C & Zhang, L 2011, Highly refractive index sensitive femtosecond laser inscribed long period gratings. in WJ Bock, J Albert & X Bao (eds), 21st international conference on Optical Fiber Sensors., 77539H, SPIE Proceedings, vol. 7753, SPIE, Bellingham, WA (US), 21st International Conference on Optical Fiber Sensors, Ottawa, ON, Canada, 15/05/11. https://doi.org/10.1117/12.885993

Highly refractive index sensitive femtosecond laser inscribed long period gratings. / Davies, Edward; Kalli, Kyriacos; Koutsides, Charalambos et al.
21st international conference on Optical Fiber Sensors. ed. / Wojtek J. Bock; Jacques Albert; Xiaoyi Bao. Bellingham, WA (US): SPIE, 2011. 77539H (SPIE Proceedings; Vol. 7753).

Research output: Chapter in Book/Published conference output › Conference publication

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T1 - Highly refractive index sensitive femtosecond laser inscribed long period gratings

AU - Davies, Edward

AU - Kalli, Kyriacos

AU - Koutsides, Charalambos

AU - Zhang, Lin

N1 - Edward Davies; Kyriacos Kalli; Charalambos Koutsides and Lin Zhang, "Highly refractive index sensitive femtosecond laser inscribed long period gratings", 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539H (2011). Copyright 2011 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited. http://dx.doi.org/10.1117/12.885993

PY - 2011/5/17

Y1 - 2011/5/17

N2 - The distinct behaviour of femtosecond laser inscribed long period gratings, with a non-uniform index perturbation within the optical fibre core, has been studied experimentally. The non-uniform laser-induced perturbation results in light coupling from the core mode to a greater number of cladding modes than is the case with their UV laser inscribed counterparts, and this is made evident from the surrounding refractive index (SRI) grating response. Femtosecond inscribed long period gratings are shown to simultaneously couple to multiple sets of cladding modes. A 400μm LPG is shown to result in attenuation peaks that have both blue and red wavelength shifts over a 1250nm to 1700nm wavelength range. This gives rise to SRI sensitivities far greater than anything achievable by monitoring a single attenuation peak. The maximum sensitivity produced by monitoring a single attenuation peak was 1106nm/RIU, whereas monitoring opposing wavelength shifts resulted in a significantly improved sensitivity of 1680nm/RIU.

AB - The distinct behaviour of femtosecond laser inscribed long period gratings, with a non-uniform index perturbation within the optical fibre core, has been studied experimentally. The non-uniform laser-induced perturbation results in light coupling from the core mode to a greater number of cladding modes than is the case with their UV laser inscribed counterparts, and this is made evident from the surrounding refractive index (SRI) grating response. Femtosecond inscribed long period gratings are shown to simultaneously couple to multiple sets of cladding modes. A 400μm LPG is shown to result in attenuation peaks that have both blue and red wavelength shifts over a 1250nm to 1700nm wavelength range. This gives rise to SRI sensitivities far greater than anything achievable by monitoring a single attenuation peak. The maximum sensitivity produced by monitoring a single attenuation peak was 1106nm/RIU, whereas monitoring opposing wavelength shifts resulted in a significantly improved sensitivity of 1680nm/RIU.

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KW - long period grating

KW - refractive index

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AN - SCOPUS:79958005306

SN - 978-0-8194-8246-4

T3 - SPIE Proceedings

BT - 21st international conference on Optical Fiber Sensors

A2 - Bock, Wojtek J.

A2 - Albert, Jacques

A2 - Bao, Xiaoyi

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Y2 - 15 May 2011 through 19 May 2011

ER -

Highly refractive index sensitive femtosecond laser inscribed long period gratings

Abstract

Publication series

Conference

Bibliographical note

Keywords

Access to Document

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