The characteristic of gap FBG and its application

Yuanhong Yang; Jun Hu; Xuejing Liu; Wei Jin

doi:10.1117/12.2183662

The characteristic of gap FBG and its application

Yuanhong Yang, Jun Hu, Xuejing Liu, Wei Jin

Research output: Chapter in book / Conference proceeding › Conference article published in proceeding or book › Academic research › peer-review

Abstract

A gap fiber Bragg grating (g-FBG) is fabricated by cutting a uniform FBG in the middle to introduce a small air gap between the two sections. Numerical and experimental investigations show that the g-FBG has the characteristics of both a phase shifted FBG and a Fizeau interferometer. The influence of the air-gap shift longitudinally or transversely with respect to the fiber central axis and temperature to g-FBG's spectrums are investigated with numerical simulation and experiments, and the mathematic models are made. Based on g-FBG's different sensitivity to gap width and temperature, a micro-gap and temperature simultaneous measurement sensor was demonstrated. And a g-FBG based tunable fiber ring laser with a narrow line-width is demonstrated.

Original language	English
Title of host publication	Fifth Asia-Pacific Optical Sensors Conference, APOS 2015
Publisher	SPIE
Volume	9655
ISBN (Electronic)	9781628418651
DOIs	https://doi.org/10.1117/12.2183662
Publication status	Published - 1 Jan 2015
Event	5th Asia-Pacific Optical Sensors Conference, APOS 2015 - Lotte City Hotel Jeju, Jeju, Korea, Republic of Duration: 20 May 2015 → 22 May 2015

Conference

Conference	5th Asia-Pacific Optical Sensors Conference, APOS 2015
Country	Korea, Republic of
City	Jeju
Period	20/05/15 → 22/05/15

Keywords

Fizeau interferometer
gap fiber Bragg gratings
phase shift FBG
sensor
tunable fiber laser

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Computer Science Applications
Applied Mathematics
Electrical and Electronic Engineering

More information

10.1117/12.2183662

Scopus Link

Cite this

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abstract = "A gap fiber Bragg grating (g-FBG) is fabricated by cutting a uniform FBG in the middle to introduce a small air gap between the two sections. Numerical and experimental investigations show that the g-FBG has the characteristics of both a phase shifted FBG and a Fizeau interferometer. The influence of the air-gap shift longitudinally or transversely with respect to the fiber central axis and temperature to g-FBG's spectrums are investigated with numerical simulation and experiments, and the mathematic models are made. Based on g-FBG's different sensitivity to gap width and temperature, a micro-gap and temperature simultaneous measurement sensor was demonstrated. And a g-FBG based tunable fiber ring laser with a narrow line-width is demonstrated.",

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AU - Hu, Jun

AU - Liu, Xuejing

AU - Jin, Wei

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N2 - A gap fiber Bragg grating (g-FBG) is fabricated by cutting a uniform FBG in the middle to introduce a small air gap between the two sections. Numerical and experimental investigations show that the g-FBG has the characteristics of both a phase shifted FBG and a Fizeau interferometer. The influence of the air-gap shift longitudinally or transversely with respect to the fiber central axis and temperature to g-FBG's spectrums are investigated with numerical simulation and experiments, and the mathematic models are made. Based on g-FBG's different sensitivity to gap width and temperature, a micro-gap and temperature simultaneous measurement sensor was demonstrated. And a g-FBG based tunable fiber ring laser with a narrow line-width is demonstrated.

AB - A gap fiber Bragg grating (g-FBG) is fabricated by cutting a uniform FBG in the middle to introduce a small air gap between the two sections. Numerical and experimental investigations show that the g-FBG has the characteristics of both a phase shifted FBG and a Fizeau interferometer. The influence of the air-gap shift longitudinally or transversely with respect to the fiber central axis and temperature to g-FBG's spectrums are investigated with numerical simulation and experiments, and the mathematic models are made. Based on g-FBG's different sensitivity to gap width and temperature, a micro-gap and temperature simultaneous measurement sensor was demonstrated. And a g-FBG based tunable fiber ring laser with a narrow line-width is demonstrated.

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KW - phase shift FBG

KW - sensor

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