Effects of laser intensity noise on polarimetric distributed feedback fibre laser ultrasonic sensor

Jianfei Wang; Gordon M. H. Flockhart; Deepak Uttamchandani

doi:10.1364/OFS.2018.TuE48

Effects of laser intensity noise on polarimetric distributed feedback fibre laser ultrasonic sensor

Jianfei Wang, Gordon M. H. Flockhart, Deepak Uttamchandani

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

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Abstract

The influence of the relative intensity noise, in particular the relaxation oscillation noise, of a distributed feedback (DFB) fibre laser on the performance of a polarimetric DFB fibre laser ultrasonic sensor is investigated theoretically and experimentally. A novel demodulation algorithm for the DFB fibre laser ultrasonic sensor is used to demodulate the polarization beat frequency and eliminate the effects of the intensity noise completely. The sensing system is demonstrated to demodulate time varying ultrasonic signals at 2.25 MHz and 10 MHz.

Original language	English
Title of host publication	26th International Conference on Optical Fiber Sensors
Place of Publication	Washington D.C.
Publisher	Optical Society of America
Number of pages	4
ISBN (Print)	978-1-943580-50-7
DOIs	https://doi.org/10.1364/OFS.2018.TuE48
Publication status	Published - 24 Sept 2018
Event	The 26th International Conference on Optical Fibre Sensors - SwissTech Convention Center, EPFL Campus, Lausanne, Switzerland Duration: 24 Sept 2018 → 28 Sept 2018 Conference number: 26 https://www.ofs26.org/site/OFS-26/page-143739.html

Conference

Conference	The 26th International Conference on Optical Fibre Sensors
Abbreviated title	OFS-26
Country/Territory	Switzerland
City	Lausanne
Period	24/09/18 → 28/09/18
Internet address	https://www.ofs26.org/site/OFS-26/page-143739.html

Keywords

distributed feedback
fibre laser
intensity noise

Access to Document

10.1364/OFS.2018.TuE48

Wang-etal-OFS2018-Effects-of-laser-intensity-noise-on-polarimetric-distributed-feedbackAccepted author manuscript, 754 KB

Cite this

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title = "Effects of laser intensity noise on polarimetric distributed feedback fibre laser ultrasonic sensor",

abstract = "The influence of the relative intensity noise, in particular the relaxation oscillation noise, of a distributed feedback (DFB) fibre laser on the performance of a polarimetric DFB fibre laser ultrasonic sensor is investigated theoretically and experimentally. A novel demodulation algorithm for the DFB fibre laser ultrasonic sensor is used to demodulate the polarization beat frequency and eliminate the effects of the intensity noise completely. The sensing system is demonstrated to demodulate time varying ultrasonic signals at 2.25 MHz and 10 MHz.",

keywords = "distributed feedback, fibre laser, intensity noise",

author = "Jianfei Wang and Flockhart, {Gordon M. H.} and Deepak Uttamchandani",

year = "2018",

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day = "24",

doi = "10.1364/OFS.2018.TuE48",

language = "English",

isbn = "978-1-943580-50-7",

booktitle = "26th International Conference on Optical Fiber Sensors",

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note = " The 26th International Conference on Optical Fibre Sensors , OFS-26 ; Conference date: 24-09-2018 Through 28-09-2018",

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}

Wang, J, Flockhart, GMH & Uttamchandani, D 2018, Effects of laser intensity noise on polarimetric distributed feedback fibre laser ultrasonic sensor. in 26th International Conference on Optical Fiber Sensors., TuE48, Optical Society of America, Washington D.C., The 26th International Conference on Optical Fibre Sensors , Lausanne, Switzerland, 24/09/18. https://doi.org/10.1364/OFS.2018.TuE48

Effects of laser intensity noise on polarimetric distributed feedback fibre laser ultrasonic sensor. / Wang, Jianfei; Flockhart, Gordon M. H.; Uttamchandani, Deepak.
26th International Conference on Optical Fiber Sensors. Washington D.C.: Optical Society of America, 2018. TuE48.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

TY - GEN

T1 - Effects of laser intensity noise on polarimetric distributed feedback fibre laser ultrasonic sensor

AU - Wang, Jianfei

AU - Flockhart, Gordon M. H.

AU - Uttamchandani, Deepak

N1 - Conference code: 26

PY - 2018/9/24

Y1 - 2018/9/24

N2 - The influence of the relative intensity noise, in particular the relaxation oscillation noise, of a distributed feedback (DFB) fibre laser on the performance of a polarimetric DFB fibre laser ultrasonic sensor is investigated theoretically and experimentally. A novel demodulation algorithm for the DFB fibre laser ultrasonic sensor is used to demodulate the polarization beat frequency and eliminate the effects of the intensity noise completely. The sensing system is demonstrated to demodulate time varying ultrasonic signals at 2.25 MHz and 10 MHz.

AB - The influence of the relative intensity noise, in particular the relaxation oscillation noise, of a distributed feedback (DFB) fibre laser on the performance of a polarimetric DFB fibre laser ultrasonic sensor is investigated theoretically and experimentally. A novel demodulation algorithm for the DFB fibre laser ultrasonic sensor is used to demodulate the polarization beat frequency and eliminate the effects of the intensity noise completely. The sensing system is demonstrated to demodulate time varying ultrasonic signals at 2.25 MHz and 10 MHz.

KW - distributed feedback

KW - fibre laser

KW - intensity noise

UR - https://www.ofs26.org/

U2 - 10.1364/OFS.2018.TuE48

DO - 10.1364/OFS.2018.TuE48

M3 - Conference contribution book

SN - 978-1-943580-50-7

BT - 26th International Conference on Optical Fiber Sensors

PB - Optical Society of America

CY - Washington D.C.

T2 - The 26th International Conference on Optical Fibre Sensors

Y2 - 24 September 2018 through 28 September 2018

ER -

Effects of laser intensity noise on polarimetric distributed feedback fibre laser ultrasonic sensor

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Keywords

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