Fabry-Perot Sensor Using Cascaded Chirped Fiber Bragg Gratings with Opposite Chirp Directions

Yupeng Zhu, Qi Zhang, Guigen Liu, Xiangyu Luo, Ming Han

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

We report a fiber-optic strain sensor that can simultaneously achieve high resolution and large dynamic range. The sensor is a fiber-optic Fabry-Perot cavity formed by cascaded high-reflection chirped fiber Bragg gratings with opposite chirp directions. The reflection spectrum of the sensor features a series of narrow spectral notches with unequal spacings. The sensor is demodulated by the wavelength scanning of a distributed feedback laser diode through the current-injection modulation. The narrow spectral notch leads to high measurement resolution; while the unambiguous identification of the spectral notches through their unique spectral spacings results in large measurement range without the need for fringe counting. We have demonstrated a linear axial strain response of the sensor with strain resolution of 0.033~\mu \varepsilon over a range of 1000~\mu \varepsilon .

Original languageEnglish (US)
Article number8399852
Pages (from-to)1431-1434
Number of pages4
JournalIEEE Photonics Technology Letters
Volume30
Issue number16
DOIs
StatePublished - Aug 15 2018

Fingerprint

Fiber Bragg gratings
chirp
Bragg gratings
notches
fibers
sensors
Sensors
Fiber optics
fiber optics
spacing
axial strain
Distributed feedback lasers
rangefinding
distributed feedback lasers
dynamic range
Semiconductor lasers
counting
semiconductor lasers
Modulation
Direction compound

Keywords

  • Fabry-Perot interferometers
  • Optical fiber sensors
  • chirped fiber Bragg gratings
  • distributed feedback lasers
  • strain measurement

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Fabry-Perot Sensor Using Cascaded Chirped Fiber Bragg Gratings with Opposite Chirp Directions. / Zhu, Yupeng; Zhang, Qi; Liu, Guigen; Luo, Xiangyu; Han, Ming.

In: IEEE Photonics Technology Letters, Vol. 30, No. 16, 8399852, 15.08.2018, p. 1431-1434.

Research output: Contribution to journalArticle

Zhu, Yupeng ; Zhang, Qi ; Liu, Guigen ; Luo, Xiangyu ; Han, Ming. / Fabry-Perot Sensor Using Cascaded Chirped Fiber Bragg Gratings with Opposite Chirp Directions. In: IEEE Photonics Technology Letters. 2018 ; Vol. 30, No. 16. pp. 1431-1434.
@article{caa77f3943404e8d9de68daab3393814,
title = "Fabry-Perot Sensor Using Cascaded Chirped Fiber Bragg Gratings with Opposite Chirp Directions",
abstract = "We report a fiber-optic strain sensor that can simultaneously achieve high resolution and large dynamic range. The sensor is a fiber-optic Fabry-Perot cavity formed by cascaded high-reflection chirped fiber Bragg gratings with opposite chirp directions. The reflection spectrum of the sensor features a series of narrow spectral notches with unequal spacings. The sensor is demodulated by the wavelength scanning of a distributed feedback laser diode through the current-injection modulation. The narrow spectral notch leads to high measurement resolution; while the unambiguous identification of the spectral notches through their unique spectral spacings results in large measurement range without the need for fringe counting. We have demonstrated a linear axial strain response of the sensor with strain resolution of 0.033~\mu \varepsilon over a range of 1000~\mu \varepsilon .",
keywords = "Fabry-Perot interferometers, Optical fiber sensors, chirped fiber Bragg gratings, distributed feedback lasers, strain measurement",
author = "Yupeng Zhu and Qi Zhang and Guigen Liu and Xiangyu Luo and Ming Han",
year = "2018",
month = "8",
day = "15",
doi = "10.1109/LPT.2018.2851538",
language = "English (US)",
volume = "30",
pages = "1431--1434",
journal = "IEEE Photonics Technology Letters",
issn = "1041-1135",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
number = "16",

}

TY - JOUR

T1 - Fabry-Perot Sensor Using Cascaded Chirped Fiber Bragg Gratings with Opposite Chirp Directions

AU - Zhu, Yupeng

AU - Zhang, Qi

AU - Liu, Guigen

AU - Luo, Xiangyu

AU - Han, Ming

PY - 2018/8/15

Y1 - 2018/8/15

N2 - We report a fiber-optic strain sensor that can simultaneously achieve high resolution and large dynamic range. The sensor is a fiber-optic Fabry-Perot cavity formed by cascaded high-reflection chirped fiber Bragg gratings with opposite chirp directions. The reflection spectrum of the sensor features a series of narrow spectral notches with unequal spacings. The sensor is demodulated by the wavelength scanning of a distributed feedback laser diode through the current-injection modulation. The narrow spectral notch leads to high measurement resolution; while the unambiguous identification of the spectral notches through their unique spectral spacings results in large measurement range without the need for fringe counting. We have demonstrated a linear axial strain response of the sensor with strain resolution of 0.033~\mu \varepsilon over a range of 1000~\mu \varepsilon .

AB - We report a fiber-optic strain sensor that can simultaneously achieve high resolution and large dynamic range. The sensor is a fiber-optic Fabry-Perot cavity formed by cascaded high-reflection chirped fiber Bragg gratings with opposite chirp directions. The reflection spectrum of the sensor features a series of narrow spectral notches with unequal spacings. The sensor is demodulated by the wavelength scanning of a distributed feedback laser diode through the current-injection modulation. The narrow spectral notch leads to high measurement resolution; while the unambiguous identification of the spectral notches through their unique spectral spacings results in large measurement range without the need for fringe counting. We have demonstrated a linear axial strain response of the sensor with strain resolution of 0.033~\mu \varepsilon over a range of 1000~\mu \varepsilon .

KW - Fabry-Perot interferometers

KW - Optical fiber sensors

KW - chirped fiber Bragg gratings

KW - distributed feedback lasers

KW - strain measurement

UR - http://www.scopus.com/inward/record.url?scp=85049307908&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85049307908&partnerID=8YFLogxK

U2 - 10.1109/LPT.2018.2851538

DO - 10.1109/LPT.2018.2851538

M3 - Article

AN - SCOPUS:85049307908

VL - 30

SP - 1431

EP - 1434

JO - IEEE Photonics Technology Letters

JF - IEEE Photonics Technology Letters

SN - 1041-1135

IS - 16

M1 - 8399852

ER -