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Super-simplified optical correlation-domain reflectometry

Takaki Kiyozumi Tomoya Miyamae Kohei Noda Heeyoung Lee 30870787 Kentaro Nakamura 20242315 Yosuke Mizuno 30630818 横浜国立大学

2022.07

概要

Optical correlation-domain reflectometry (OCDR), which is known as one of the fiber-optic techniques for distributed reflectivity sensing, conventionally included an acousto-optic modulator, a reference path, and erbium-doped fiber amplifiers in its setup. In this work, by removing all of these components simultaneously, we develop a super-simplified configuration of OCDR, which consists of a light source and a photodetector only. We experimentally show that this system can still perform distributed reflectivity sensing with a moderate signal-to-noise ratio, which will boost the portability and cost efficiency of the OCDR technology.

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参考文献

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Template for JJAP Rapid Communications and Brief Notes (Jan. 2014)

Figure Captions

Fig. 1. (Color online) Schematic of the reference-path-free OCDR. EDFA: erbium-doped

fiber amplifier.

Fig. 2. (Color online) Experimental setup of the super-simplified OCDR. PC: physicalcontact, APC: angled-physical-contact.

Fig. 3. (Color online) (a) Normalized power distributions measured at different incident

powers. (b) SNRs plotted as a function of the incident power.

Template for JJAP Rapid Communications and Brief Notes (Jan. 2014)

Figures

Fig. 1

Fig. 2

Sensing part

ig t source

irculator

otodetector

Signal processing

lectrical

spectrum

analy er

nit

scilloscope

Fig. 3

(a)

(b)

...

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