Coherent Rayleigh Backscatter Phase Noise in Digitally Enhanced Fiber Interferometers

Chathura P. Bandutunga; Ya Zhang; Terry G. Mcrae; Malcolm B. Gray; Jong H. Chow

doi:10.1109/JLT.2021.3049567

Coherent Rayleigh Backscatter Phase Noise in Digitally Enhanced Fiber Interferometers

Chathura P. Bandutunga^*, Ya Zhang, Terry G. Mcrae, Malcolm B. Gray, Jong H. Chow

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

The coupling of Rayleigh backscatter induced phase noise in bi-directional, inline fiber interferometers compromises detection sensitivity for Fourier frequencies less than 1 Hz. Here we report experimental and theoretical work highlighting the coupling of backscatter phase noise, and its subsequent range-gating and suppression using digitally enhanced homodyne interferometry. Between two in-line fiber interferometers, each with a differential arm-length of 8 km, we demonstrate a relative stability of 10 Hz/√Hz at a Fourier frequency of 100 mHz.

Original language	English
Article number	9314870
Pages (from-to)	2625-2630
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	39
Issue number	8
DOIs	https://doi.org/10.1109/JLT.2021.3049567
Publication status	Published - 15 Apr 2021

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title = "Coherent Rayleigh Backscatter Phase Noise in Digitally Enhanced Fiber Interferometers",

abstract = "The coupling of Rayleigh backscatter induced phase noise in bi-directional, inline fiber interferometers compromises detection sensitivity for Fourier frequencies less than 1 Hz. Here we report experimental and theoretical work highlighting the coupling of backscatter phase noise, and its subsequent range-gating and suppression using digitally enhanced homodyne interferometry. Between two in-line fiber interferometers, each with a differential arm-length of 8 km, we demonstrate a relative stability of 10 Hz/√Hz at a Fourier frequency of 100 mHz.",

keywords = "Fiber optics, frequency measurement, optical interferometry, phase measurement",

author = "Bandutunga, \{Chathura P.\} and Ya Zhang and Mcrae, \{Terry G.\} and Gray, \{Malcolm B.\} and Chow, \{Jong H.\}",

note = "Publisher Copyright: {\textcopyright} 2020 IEEE.",

year = "2021",

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doi = "10.1109/JLT.2021.3049567",

language = "English",

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T1 - Coherent Rayleigh Backscatter Phase Noise in Digitally Enhanced Fiber Interferometers

AU - Bandutunga, Chathura P.

AU - Zhang, Ya

AU - Mcrae, Terry G.

AU - Gray, Malcolm B.

AU - Chow, Jong H.

PY - 2021/4/15

Y1 - 2021/4/15

N2 - The coupling of Rayleigh backscatter induced phase noise in bi-directional, inline fiber interferometers compromises detection sensitivity for Fourier frequencies less than 1 Hz. Here we report experimental and theoretical work highlighting the coupling of backscatter phase noise, and its subsequent range-gating and suppression using digitally enhanced homodyne interferometry. Between two in-line fiber interferometers, each with a differential arm-length of 8 km, we demonstrate a relative stability of 10 Hz/√Hz at a Fourier frequency of 100 mHz.

AB - The coupling of Rayleigh backscatter induced phase noise in bi-directional, inline fiber interferometers compromises detection sensitivity for Fourier frequencies less than 1 Hz. Here we report experimental and theoretical work highlighting the coupling of backscatter phase noise, and its subsequent range-gating and suppression using digitally enhanced homodyne interferometry. Between two in-line fiber interferometers, each with a differential arm-length of 8 km, we demonstrate a relative stability of 10 Hz/√Hz at a Fourier frequency of 100 mHz.

KW - Fiber optics

KW - frequency measurement

KW - optical interferometry

KW - phase measurement

UR - https://www.scopus.com/pages/publications/85099231020

U2 - 10.1109/JLT.2021.3049567

DO - 10.1109/JLT.2021.3049567

M3 - Article

SN - 0733-8724

VL - 39

SP - 2625

EP - 2630

JO - Journal of Lightwave Technology

JF - Journal of Lightwave Technology

IS - 8

M1 - 9314870

ER -

Coherent Rayleigh Backscatter Phase Noise in Digitally Enhanced Fiber Interferometers

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