Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements

Pouneh Saffari; Hongyan Fu; Kaiming Zhou; Lin Zhang; Ian Bennion

doi:10.1117/12.820651

Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements

Pouneh Saffari, Hongyan Fu, Kaiming Zhou, Lin Zhang, Ian Bennion

Aston Institute of Photonic Technologies (AiPT)

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

Abstract

We report here the fabrication, charaterisation and refractive index sensing of two microchanneled chirped fiber Bragg gratings (MCFBGs) with different channel sizes (~550µm and ~1000µm). The chirped grating structures were UV-inscribed in optical fibre and the microchannels were created in the middle of the CFBGs by femtosecond (fs) laser assisted chemical etching method. The creation of microchannels in the CFBG structures gives an access to the external index liquid, thus inducing refractive index (RI) sensitivity to the structure. In comparison with previously reported FBG based RI sensors, for which the cladding layers usually were removed, the MCFBGs represent a more ideal solution for robust devices as the microchannel will not degrade the structure strength. The two MCFBGs were spectrally charaterised for their RI and temperature responses and both gratings exhibited unique thermal and RI sensitivities, which may be utilised for implementation of bio-chemical sensors with capability to eliminate temperature crosssensitivity.

Original language	English
Title of host publication	Optical Sensors 2009 : proceedings
Editors	Francesco Baldini, Jiri Homola, Robert A. Lieberman
Place of Publication	Bellingham, WA (US)
Publisher	SPIE
Number of pages	9
ISBN (Print)	978-0-8194-7630-2
DOIs	https://doi.org/10.1117/12.820651
Publication status	Published - 18 May 2009
Event	Oral presentation at SPIE Europe Optics and Optoelectronics - Prague, Czech Republic Duration: 20 Apr 2009 → 23 Apr 2009

Publication series

Name	SPIE proceedings
Publisher	SPIE
Volume	7356
ISSN (Print)	0277-786X

Conference

Conference	Oral presentation at SPIE Europe Optics and Optoelectronics
Country/Territory	Czech Republic
City	Prague
Period	20/04/09 → 23/04/09

Bibliographical note

Pouneh Saffari ; Hongyan Fu ; Kaiming Zhou ; Lin Zhang and Ian Bennion
"Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements", Francesco Baldini ; Jiri Homola ; and Robert A. Lieberman (eds), Proc. SPIE 7356, Optical Sensors 2009, 735604 (May 18, 2009).
Copyright 2009 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/10.1117/12.820651

Keywords

photonics
fibre Bragg gratings

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10.1117/12.820651

Microchanneled Chirped Fibre Bragg Gratings For Simultaneous Refractive Index and Temperature Measurements
Pouneh Saffari ; Hongyan Fu ; Kaiming Zhou ; Lin Zhang and Ian Bennion "Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements", Francesco Baldini ; Jiri Homola ; and Robert A. Lieberman (eds), Proc. SPIE 7356, Optical Sensors 2009, 735604 (May 18, 2009). Copyright 2009 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/10.1117/12.820651
Final published version, 807 KB

Cite this

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title = "Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements",

abstract = "We report here the fabrication, charaterisation and refractive index sensing of two microchanneled chirped fiber Bragg gratings (MCFBGs) with different channel sizes (~550µm and ~1000µm). The chirped grating structures were UV-inscribed in optical fibre and the microchannels were created in the middle of the CFBGs by femtosecond (fs) laser assisted chemical etching method. The creation of microchannels in the CFBG structures gives an access to the external index liquid, thus inducing refractive index (RI) sensitivity to the structure. In comparison with previously reported FBG based RI sensors, for which the cladding layers usually were removed, the MCFBGs represent a more ideal solution for robust devices as the microchannel will not degrade the structure strength. The two MCFBGs were spectrally charaterised for their RI and temperature responses and both gratings exhibited unique thermal and RI sensitivities, which may be utilised for implementation of bio-chemical sensors with capability to eliminate temperature crosssensitivity.",

keywords = "photonics, fibre Bragg gratings",

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Saffari, P, Fu, H, Zhou, K , Zhang, L & Bennion, I 2009, Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements. in F Baldini, J Homola & RA Lieberman (eds), Optical Sensors 2009 : proceedings. SPIE proceedings, vol. 7356, SPIE, Bellingham, WA (US), Oral presentation at SPIE Europe Optics and Optoelectronics, Prague, Czech Republic, 20/04/09. https://doi.org/10.1117/12.820651

Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements. / Saffari, Pouneh; Fu, Hongyan; Zhou, Kaiming et al.
Optical Sensors 2009 : proceedings. ed. / Francesco Baldini; Jiri Homola; Robert A. Lieberman. Bellingham, WA (US): SPIE, 2009. (SPIE proceedings; Vol. 7356).

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

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AU - Saffari, Pouneh

AU - Fu, Hongyan

AU - Zhou, Kaiming

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N1 - Pouneh Saffari ; Hongyan Fu ; Kaiming Zhou ; Lin Zhang and Ian Bennion "Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements", Francesco Baldini ; Jiri Homola ; and Robert A. Lieberman (eds), Proc. SPIE 7356, Optical Sensors 2009, 735604 (May 18, 2009). Copyright 2009 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/10.1117/12.820651

PY - 2009/5/18

Y1 - 2009/5/18

N2 - We report here the fabrication, charaterisation and refractive index sensing of two microchanneled chirped fiber Bragg gratings (MCFBGs) with different channel sizes (~550µm and ~1000µm). The chirped grating structures were UV-inscribed in optical fibre and the microchannels were created in the middle of the CFBGs by femtosecond (fs) laser assisted chemical etching method. The creation of microchannels in the CFBG structures gives an access to the external index liquid, thus inducing refractive index (RI) sensitivity to the structure. In comparison with previously reported FBG based RI sensors, for which the cladding layers usually were removed, the MCFBGs represent a more ideal solution for robust devices as the microchannel will not degrade the structure strength. The two MCFBGs were spectrally charaterised for their RI and temperature responses and both gratings exhibited unique thermal and RI sensitivities, which may be utilised for implementation of bio-chemical sensors with capability to eliminate temperature crosssensitivity.

AB - We report here the fabrication, charaterisation and refractive index sensing of two microchanneled chirped fiber Bragg gratings (MCFBGs) with different channel sizes (~550µm and ~1000µm). The chirped grating structures were UV-inscribed in optical fibre and the microchannels were created in the middle of the CFBGs by femtosecond (fs) laser assisted chemical etching method. The creation of microchannels in the CFBG structures gives an access to the external index liquid, thus inducing refractive index (RI) sensitivity to the structure. In comparison with previously reported FBG based RI sensors, for which the cladding layers usually were removed, the MCFBGs represent a more ideal solution for robust devices as the microchannel will not degrade the structure strength. The two MCFBGs were spectrally charaterised for their RI and temperature responses and both gratings exhibited unique thermal and RI sensitivities, which may be utilised for implementation of bio-chemical sensors with capability to eliminate temperature crosssensitivity.

KW - photonics

KW - fibre Bragg gratings

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M3 - Chapter

SN - 978-0-8194-7630-2

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A2 - Baldini, Francesco

A2 - Homola, Jiri

A2 - Lieberman, Robert A.

PB - SPIE

CY - Bellingham, WA (US)

T2 - Oral presentation at SPIE Europe Optics and Optoelectronics

Y2 - 20 April 2009 through 23 April 2009

ER -

Microchanneled chirped fibre Bragg gratings for simultaneous refractive index and temperature measurements

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Bibliographical note

Keywords

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Multi-wavelength switchable fibre ring laser based on polarisation selective tilted fibre gratings capable of strain and temperature sensing

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