UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control

Edward Davies; Kyriacos Kalli; Charalambos Koutsides; Thomas D.P. Allsop; Lin Zhang

doi:10.1117/12.885990

UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control

Edward Davies^*, Kyriacos Kalli, Charalambos Koutsides, Thomas D.P. Allsop, Lin Zhang

^*Corresponding author for this work

Aston Institute of Photonic Technologies (AiPT)

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

Abstract

We present data on the development a new type of optical fibre polariser and the characterisation of its wavelength properties. The device is fashioned using a two step process. Firstly, a standard UV long period grating (LPG) with a period of 330μm is inscribed into hydrogenated SMF-28, followed by femtosecond laser ablation of a groove parallel to the fibre axis. The UV inscribed LPGs have inherently low birefringence. However, the removal of the cladding layer parallel to the location of the LPG within the fibre core (as a result the ablation) modifies the cladding modes that couple with the LPG. Furthermore, the groove breaks the fibre symmetry introducing a non-uniform stress profile across the fibre cross section leading to significant birefringence. We show that increasing the depth of the groove increases the birefringence, and this behaviour coupled with the ability to control the wavelength location of the LPGs attenuations peaks results in a polariser able to operate at almost any wavelength and birefringence. The maximum birefringence reported here as polarisation mode splitting was approximately 39±0.1nm with a polarisation loss of 10dB.

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/10.1117/12.885990
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; Tom Allsop and Lin Zhang, "UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control", 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539G (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/10.1117/12.885990

Keywords

femtosecond laser
long period grating
polariser

Access to Document

10.1117/12.885990

Femtosecond ablated axial fibre slots for polarization control
Edward Davies; Kyriacos Kalli; Charalambos Koutsides; Tom Allsop and Lin Zhang, "UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control", 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539G (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/10.1117/12.885990
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http://proceedings.spiedigitallibrary.org/proceeding.aspx?articleid=1347151

Cite this

@inproceedings{ea333ce5c7ff45dca1fd7f0932567886,

title = "UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control",

abstract = "We present data on the development a new type of optical fibre polariser and the characterisation of its wavelength properties. The device is fashioned using a two step process. Firstly, a standard UV long period grating (LPG) with a period of 330μm is inscribed into hydrogenated SMF-28, followed by femtosecond laser ablation of a groove parallel to the fibre axis. The UV inscribed LPGs have inherently low birefringence. However, the removal of the cladding layer parallel to the location of the LPG within the fibre core (as a result the ablation) modifies the cladding modes that couple with the LPG. Furthermore, the groove breaks the fibre symmetry introducing a non-uniform stress profile across the fibre cross section leading to significant birefringence. We show that increasing the depth of the groove increases the birefringence, and this behaviour coupled with the ability to control the wavelength location of the LPGs attenuations peaks results in a polariser able to operate at almost any wavelength and birefringence. The maximum birefringence reported here as polarisation mode splitting was approximately 39±0.1nm with a polarisation loss of 10dB.",

keywords = "femtosecond laser, long period grating, polariser",

author = "Edward Davies and Kyriacos Kalli and Charalambos Koutsides and Allsop, {Thomas D.P.} and Lin Zhang",

note = "Edward Davies; Kyriacos Kalli; Charalambos Koutsides; Tom Allsop and Lin Zhang, {"}UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control{"}, 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539G (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/10.1117/12.885990; 21st International Conference on Optical Fiber Sensors, OFS21 ; Conference date: 15-05-2011 Through 19-05-2011",

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Davies, E, Kalli, K, Koutsides, C, Allsop, TDP & Zhang, L 2011, UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control. in WJ Bock, J Albert & X Bao (eds), 21st international conference on Optical Fiber Sensors., 77539G, SPIE Proceedings, vol. 7753, SPIE, Bellingham, WA (US), 21st International Conference on Optical Fiber Sensors, Ottawa, ON, Canada, 15/05/11. https://doi.org/10.1117/12.885990

UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control. / 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. 77539G (SPIE Proceedings; Vol. 7753).

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

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AU - Kalli, Kyriacos

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AU - Allsop, Thomas D.P.

AU - Zhang, Lin

N1 - Edward Davies; Kyriacos Kalli; Charalambos Koutsides; Tom Allsop and Lin Zhang, "UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control", 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539G (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/10.1117/12.885990

PY - 2011/5/17

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N2 - We present data on the development a new type of optical fibre polariser and the characterisation of its wavelength properties. The device is fashioned using a two step process. Firstly, a standard UV long period grating (LPG) with a period of 330μm is inscribed into hydrogenated SMF-28, followed by femtosecond laser ablation of a groove parallel to the fibre axis. The UV inscribed LPGs have inherently low birefringence. However, the removal of the cladding layer parallel to the location of the LPG within the fibre core (as a result the ablation) modifies the cladding modes that couple with the LPG. Furthermore, the groove breaks the fibre symmetry introducing a non-uniform stress profile across the fibre cross section leading to significant birefringence. We show that increasing the depth of the groove increases the birefringence, and this behaviour coupled with the ability to control the wavelength location of the LPGs attenuations peaks results in a polariser able to operate at almost any wavelength and birefringence. The maximum birefringence reported here as polarisation mode splitting was approximately 39±0.1nm with a polarisation loss of 10dB.

AB - We present data on the development a new type of optical fibre polariser and the characterisation of its wavelength properties. The device is fashioned using a two step process. Firstly, a standard UV long period grating (LPG) with a period of 330μm is inscribed into hydrogenated SMF-28, followed by femtosecond laser ablation of a groove parallel to the fibre axis. The UV inscribed LPGs have inherently low birefringence. However, the removal of the cladding layer parallel to the location of the LPG within the fibre core (as a result the ablation) modifies the cladding modes that couple with the LPG. Furthermore, the groove breaks the fibre symmetry introducing a non-uniform stress profile across the fibre cross section leading to significant birefringence. We show that increasing the depth of the groove increases the birefringence, and this behaviour coupled with the ability to control the wavelength location of the LPGs attenuations peaks results in a polariser able to operate at almost any wavelength and birefringence. The maximum birefringence reported here as polarisation mode splitting was approximately 39±0.1nm with a polarisation loss of 10dB.

KW - femtosecond laser

KW - long period grating

KW - polariser

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CY - Bellingham, WA (US)

T2 - 21st International Conference on Optical Fiber Sensors

Y2 - 15 May 2011 through 19 May 2011

ER -

UV inscribed long period gratings with femtosecond ablated axial fibre slots for polarization control

Abstract

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Bibliographical note

Keywords

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