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Curvature sensor based on resonance mode splitting of multimode interference combined with a long-period grating

Curvature sensor based on resonance mode splitting of multimode interference combined with a long-period grating
Curvature sensor based on resonance mode splitting of multimode interference combined with a long-period grating
Optical microfiber/nanowire-based photonic devices have been widely used in a range of sensing applications, including refractive index, stain, humidity, chemical gas and temperature. Optical fiber based refractive index (RI) sensors have attracted extensive attention due to their unique advantages such as immunity to electromagnetic interference, small size, high sensitivity, etc. The techniques used to implement fiber based RI sensing include a fiber Bragg grating (FBG), long period fiber grating (LPFG), surface plasmon resonance, tapered fiber and a singlemode– multimode–singlemode (SMS) fiber structure. Among these techniques, an SMS fiber structure has the advantages of simplicity and ease of fabrication and previous investigations have shown that an SMS fiber structure can excite and couple multiple modes to an SMF. For Bragg-grating-based sensors, which suffer from limited temperature- and strain-induced spectral displacements, is often required that one use complex interferometric techniques to detect these shifts. On the other hand, the LPFG is a promising technique for optical sensing and may exhibit wavelength blue-shift as the RI increases. If the two types of sensors are combined with each other, the sensitivity will be improved by monitoring the separation wavelength shifts between the resonant wavelengths of the LPFG and SMS fiber structures.
Our proposed technique has advantages of simple configuration, easy fabrication, and simultaneously measurement of both RI and temperature.
He, Jing
b66c81f0-2d9b-449e-adc8-f88f7a038c7e
Ding, Ming
12b31750-03c4-4f76-aab6-64feb8f13bf0
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8
He, Jing
b66c81f0-2d9b-449e-adc8-f88f7a038c7e
Ding, Ming
12b31750-03c4-4f76-aab6-64feb8f13bf0
Brambilla, Gilberto
815d9712-62c7-47d1-8860-9451a363a6c8

He, Jing, Ding, Ming and Brambilla, Gilberto (2015) Curvature sensor based on resonance mode splitting of multimode interference combined with a long-period grating. Optical Nanofiber Applications: From Quantum to Bio Technologies, Okinawa-ken, Japan. 25 - 28 May 2015.

Record type: Conference or Workshop Item (Poster)

Abstract

Optical microfiber/nanowire-based photonic devices have been widely used in a range of sensing applications, including refractive index, stain, humidity, chemical gas and temperature. Optical fiber based refractive index (RI) sensors have attracted extensive attention due to their unique advantages such as immunity to electromagnetic interference, small size, high sensitivity, etc. The techniques used to implement fiber based RI sensing include a fiber Bragg grating (FBG), long period fiber grating (LPFG), surface plasmon resonance, tapered fiber and a singlemode– multimode–singlemode (SMS) fiber structure. Among these techniques, an SMS fiber structure has the advantages of simplicity and ease of fabrication and previous investigations have shown that an SMS fiber structure can excite and couple multiple modes to an SMF. For Bragg-grating-based sensors, which suffer from limited temperature- and strain-induced spectral displacements, is often required that one use complex interferometric techniques to detect these shifts. On the other hand, the LPFG is a promising technique for optical sensing and may exhibit wavelength blue-shift as the RI increases. If the two types of sensors are combined with each other, the sensitivity will be improved by monitoring the separation wavelength shifts between the resonant wavelengths of the LPFG and SMS fiber structures.
Our proposed technique has advantages of simple configuration, easy fabrication, and simultaneously measurement of both RI and temperature.

Full text not available from this repository.

More information

Accepted/In Press date: 8 February 2015
Published date: 25 May 2015
Venue - Dates: Optical Nanofiber Applications: From Quantum to Bio Technologies, Okinawa-ken, Japan, 2015-05-25 - 2015-05-28

Identifiers

Local EPrints ID: 414046
URI: https://eprints.soton.ac.uk/id/eprint/414046
PURE UUID: b445a10c-6d6a-43a8-a0cc-dcf33960399c

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Date deposited: 13 Sep 2017 16:31
Last modified: 30 Jan 2019 17:31

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