Optical refractive-index sensor based on dual fiber-Bragg gratings interposed with a multimode-fiber taper

Li Yang Shao; Aping Zhang; Wei Sheng Liu; Hong Yan Fu; Sailing He

doi:10.1109/LPT.2006.889010

Optical refractive-index sensor based on dual fiber-Bragg gratings interposed with a multimode-fiber taper

Li Yang Shao, Aping Zhang, Wei Sheng Liu, Hong Yan Fu, Sailing He

Research output: Journal article publication › Journal article › Academic research › peer-review

59 Citations (Scopus)

Abstract

A new type of optical refractive-index (RI) sensor is proposed and experimentally demonstrated by using a structure of two single-mode fiber (SMF) Bragg gratings with a multimode fiber (MMF) taper in-between. The loss induced by a mismatch of waveguide structure between SMFs and MMFs is amplified by a tapering process, and is utilized for RI sensing through evanescent field. Experimental results show that the sensor possesses a tailorable sensitivity to the change of external RI and has a good linear response in the simultaneous measurement of external RI and temperature.

Original language	English
Pages (from-to)	30-32
Number of pages	3
Journal	IEEE Photonics Technology Letters
Volume	19
Issue number	1
DOIs	https://doi.org/10.1109/LPT.2006.889010
Publication status	Published - 1 Jan 2007
Externally published	Yes

Keywords

Fiber Bragg grating (FBG)
Fiber-optic sensor
Multimode fiber taper (MFT)
Refractive-index (RI) measurement

ASJC Scopus subject areas

Electrical and Electronic Engineering
Atomic and Molecular Physics, and Optics
Physics and Astronomy (miscellaneous)

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10.1109/LPT.2006.889010

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title = "Optical refractive-index sensor based on dual fiber-Bragg gratings interposed with a multimode-fiber taper",

abstract = "A new type of optical refractive-index (RI) sensor is proposed and experimentally demonstrated by using a structure of two single-mode fiber (SMF) Bragg gratings with a multimode fiber (MMF) taper in-between. The loss induced by a mismatch of waveguide structure between SMFs and MMFs is amplified by a tapering process, and is utilized for RI sensing through evanescent field. Experimental results show that the sensor possesses a tailorable sensitivity to the change of external RI and has a good linear response in the simultaneous measurement of external RI and temperature.",

keywords = "Fiber Bragg grating (FBG), Fiber-optic sensor, Multimode fiber taper (MFT), Refractive-index (RI) measurement",

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AU - Shao, Li Yang

AU - Zhang, Aping

AU - Liu, Wei Sheng

AU - Fu, Hong Yan

AU - He, Sailing

PY - 2007/1/1

Y1 - 2007/1/1

N2 - A new type of optical refractive-index (RI) sensor is proposed and experimentally demonstrated by using a structure of two single-mode fiber (SMF) Bragg gratings with a multimode fiber (MMF) taper in-between. The loss induced by a mismatch of waveguide structure between SMFs and MMFs is amplified by a tapering process, and is utilized for RI sensing through evanescent field. Experimental results show that the sensor possesses a tailorable sensitivity to the change of external RI and has a good linear response in the simultaneous measurement of external RI and temperature.

AB - A new type of optical refractive-index (RI) sensor is proposed and experimentally demonstrated by using a structure of two single-mode fiber (SMF) Bragg gratings with a multimode fiber (MMF) taper in-between. The loss induced by a mismatch of waveguide structure between SMFs and MMFs is amplified by a tapering process, and is utilized for RI sensing through evanescent field. Experimental results show that the sensor possesses a tailorable sensitivity to the change of external RI and has a good linear response in the simultaneous measurement of external RI and temperature.

KW - Fiber Bragg grating (FBG)

KW - Fiber-optic sensor

KW - Multimode fiber taper (MFT)

KW - Refractive-index (RI) measurement

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JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

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ER -

Optical refractive-index sensor based on dual fiber-Bragg gratings interposed with a multimode-fiber taper

Abstract

Keywords

ASJC Scopus subject areas

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