Fiber waveguides: a novel technique for investigating attenuation characteristics

Barnoski, M. K.; Jensen, S. M.

doi:10.1364/ao.15.002112

Cited by 488 publications

(166 citation statements)

References 2 publications

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“…This technique was first used by Barnoski and Jensen 13 as a mean to investigate the attenuation characteristics along a 360 m long optical fibre. The principle of this technique is based on launching a pulse of light down one end of the sensing fibre and collecting the backscattered Rayleigh light from the same end.…”

Section: A Optical Time Domain Reflectometry (Otdr)mentioning

confidence: 99%

Contributed Review: Distributed optical fibre dynamic strain sensing

Masoudi

Newson

2016

Review of Scientific Instruments

207

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Extensive research on Brillouin- and Raman-based distributed optical fibre sensors over the past two decades has resulted in the commercialization of distributed sensors capable of measuring static and quasi-static phenomena such as temperature and strain. Recently, the focus has been shifted towards developing distributed sensors for measurement of dynamic phenomena such as dynamic strain and sound waves. This article reviews the current state of the art distributed optical fibre sensors capable of quantifying dynamic vibrations. The most important aspect of Rayleigh and Brillouin scattering processes which have been used for distributed dynamic measurement are studied. The principle of the sensing techniques used to measure dynamic perturbations are analyzed followed by a case study of the most recent advances in this field. It is shown that the Rayleigh-based sensors have longer sensing range and higher frequency range, but their spatial resolution is limited to 1 m. On the other hand, the Brillouin-based sensors have shown a higher spatial resolution, but relatively lower frequency and sensing ranges.

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Section: A Optical Time Domain Reflectometry (Otdr)mentioning

confidence: 99%

Contributed Review: Distributed optical fibre dynamic strain sensing

Masoudi

Newson

2016

Review of Scientific Instruments

207

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“…One of the most widely used techniques is fiber-optic reflectometry based on Fresnel reflection. Two of its major configurations are optical time-domain reflectometry (OTDR) [1,2,3,4,5] and optical frequencydomain reflectometry (OFDR) [6,7,8,9,10]. OTDR, however, generally suffers from its insufficient spatial resolution and relatively long measurement time, whereas OFDR is susceptible to phase fluctuations caused by environmental disturbance.…”

Section: Introductionmentioning

confidence: 99%

Simplified optical correlation-domain reflectometry using polymer fiber

Hayashi

Shizuka

Minakawa

et al. 2015

IEICE Electron. Express

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We develop a simplified configuration of optical correlation-(or coherence-) domain reflectometry (OCDR) using a polymer optical fiber (POF). The conventional reference light path is removed by using as reference light the Fresnel-reflected light caused at the interface between a silica single-mode fiber and the POF. We demonstrate its basic operation and investigate the dependences of the spatial resolution and signal-to-noise ratio (SNR) on the sweep time of the laser modulation frequency. The optimal sweep time is found to be 30 ms (corresponding to a repetition rate of 33 Hz), at which both the resolution and SNR are maintained at high values.

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“…The principle of operation of optical time domain reflectometer, involves emission of many short optical impulses into the fiber splice (multi or single mode) and recording intensity of the light returning from the fiber in the form of "optical echo" that is, power backscattered (Rayleigh backscattered [7]) and reflected in the fiber power. Backscattered power detected by a reflectometer from a point of route directly before the splice is [7]:…”

Section: Reflectometric Measurement Of Splices Without Thermally Expamentioning

confidence: 99%

“…Backscattered power detected by a reflectometer from a point of route directly before the splice is [7]:…”

Section: Reflectometric Measurement Of Splices Without Thermally Expamentioning

confidence: 99%

Reflectometric measurements of thermally expanded core area

Ratuszek¹,

Zakrzewski²,

Majewski³

2010

Bulletin of the Polish Academy of Sciences: Technical Sciences

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Abstract.In this work an analysis method of one-way optical time domain reflectometer (OTDR) measurements has been presented. This method uniquely confirms mode field radii matching in diffusion transit area of the thermally expanded core (TEC) of thermally connected single mode telecommunication fibers. A comparison of reflectometric measurements with theoretical calculations of losses in TEC areas has been demonstrated.

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Fiber waveguides: a novel technique for investigating attenuation characteristics

Cited by 488 publications

References 2 publications

Contributed Review: Distributed optical fibre dynamic strain sensing

Contributed Review: Distributed optical fibre dynamic strain sensing

Simplified optical correlation-domain reflectometry using polymer fiber

Reflectometric measurements of thermally expanded core area

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