Demodulation of polarimetric fibre laser ultrasonic sensor with intensity noise cancellation

Research output: Contribution to journalArticle

Abstract

In this paper, the influences of the relative intensity noise (RIN), in particular the relaxation oscillation noise, of an erbium distributed feedback (DFB) fibre laser has been investigated theoretically and experimentally for use a polarimetric ultrasonic sensor. We show that the relaxation oscillation noise and the ultrasonic signal both induce modulation sidebands on the polarization beat frequency of the DFB laser ultrasonic sensor. We present a novel demodulation algorithm for the polarimetric DFB fibre laser ultrasonic sensor, which can effectively eliminate the influences of the intensity noise and slowly varying drift of the polarization beat frequency.
LanguageEnglish
Number of pages9
JournalJournal of Lightwave Technology
Publication statusAccepted/In press - 13 Jun 2019

Fingerprint

Ultrasonic sensors
Distributed feedback lasers
noise intensity
demodulation
Fiber lasers
Demodulation
cancellation
fiber lasers
distributed feedback lasers
ultrasonics
beat frequencies
sensors
Polarization
Erbium
Acoustic noise
oscillations
polarization
Ultrasonics
sidebands
Modulation

Keywords

  • ultrasonic sensor
  • fibre laser
  • intensity noise

Cite this

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title = "Demodulation of polarimetric fibre laser ultrasonic sensor with intensity noise cancellation",
abstract = "In this paper, the influences of the relative intensity noise (RIN), in particular the relaxation oscillation noise, of an erbium distributed feedback (DFB) fibre laser has been investigated theoretically and experimentally for use a polarimetric ultrasonic sensor. We show that the relaxation oscillation noise and the ultrasonic signal both induce modulation sidebands on the polarization beat frequency of the DFB laser ultrasonic sensor. We present a novel demodulation algorithm for the polarimetric DFB fibre laser ultrasonic sensor, which can effectively eliminate the influences of the intensity noise and slowly varying drift of the polarization beat frequency.",
keywords = "ultrasonic sensor, fibre laser, intensity noise",
author = "Jianfei Wang and Flockhart, {Gordon M. H.} and Deepak Uttamchandani",
year = "2019",
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day = "13",
language = "English",
journal = "Journal of Lightwave Technology",
issn = "0733-8724",
publisher = "Optical Society of America",

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AU - Flockhart, Gordon M. H.

AU - Uttamchandani, Deepak

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N2 - In this paper, the influences of the relative intensity noise (RIN), in particular the relaxation oscillation noise, of an erbium distributed feedback (DFB) fibre laser has been investigated theoretically and experimentally for use a polarimetric ultrasonic sensor. We show that the relaxation oscillation noise and the ultrasonic signal both induce modulation sidebands on the polarization beat frequency of the DFB laser ultrasonic sensor. We present a novel demodulation algorithm for the polarimetric DFB fibre laser ultrasonic sensor, which can effectively eliminate the influences of the intensity noise and slowly varying drift of the polarization beat frequency.

AB - In this paper, the influences of the relative intensity noise (RIN), in particular the relaxation oscillation noise, of an erbium distributed feedback (DFB) fibre laser has been investigated theoretically and experimentally for use a polarimetric ultrasonic sensor. We show that the relaxation oscillation noise and the ultrasonic signal both induce modulation sidebands on the polarization beat frequency of the DFB laser ultrasonic sensor. We present a novel demodulation algorithm for the polarimetric DFB fibre laser ultrasonic sensor, which can effectively eliminate the influences of the intensity noise and slowly varying drift of the polarization beat frequency.

KW - ultrasonic sensor

KW - fibre laser

KW - intensity noise

UR - https://www.osapublishing.org/jlt/

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JO - Journal of Lightwave Technology

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