Operation of Brillouin Optical Correlation-Domain Reflectometry: Theoretical Analysis and Experimental Validation

Mizuno, Yosuke; Zou, Weiwen; He, Zuyuan; Hotate, Kazuo

doi:10.1109/jlt.2010.2081348

Cited by 67 publications

(128 citation statements)

References 20 publications

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“…The Brillouin optical correlation domain reflectometry (BOCDR) is a distributed optical fiber sensing technique based on spontaneous Brillouin scattering [1][2][3] . The spatially localized Brillouin scattering can be extracted by utilizing the synthesis of optical correlation function (SOCF), which provides the strain and temperature information along the optical fiber 1,2 .…”

Section: Introductionmentioning

confidence: 99%

“…The spatially localized Brillouin scattering can be extracted by utilizing the synthesis of optical correlation function (SOCF), which provides the strain and temperature information along the optical fiber 1,2 . Compared with Brillouin optical correlation domain Analysis (BOCDA) 3,4 , BOCDR has the merits of one-endaccess and the ability to measure broken point.…”

Section: Introductionmentioning

confidence: 99%

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Brillouin optical correlation domain reflectometry with lock-in detection scheme

2015

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We have proposed a Brillouin optical correlation domain reflectometry (BOCDR) with lock-in detection scheme. The weak and noisy spontaneous Brillouin signal is output from the electrical spectrum analyzer as an analog signal, and detected synchronously and amplified using a lock-in amplifier. By further introducing phase modulation into the system to suppress the background optical noise, and using large frequency modulation amplitude with appropriate filtering, the performance of the system is enhanced. A 4cm spatial resolution is experimented over 100m measurement range.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Brillouin optical correlation domain reflectometry with lock-in detection scheme

2015

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“…Various sensing schemes have been developed, such as time-, frequency-, and correlation-domain techniques [4,5,6,7,8,9,10,11]. Among them, time-domain techniques have been reported to have the widest measurement range, which is limited by optical attenuation.…”

Section: Introductionmentioning

confidence: 99%

Brillouin signal amplification in pumped erbium-doped optical fiber

Ding

Hayashi

Mizuno

2014

IEICE Electron. Express

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Amplification of Brillouin scattering signal extends the measurement range and improves the signal-to-noise ratio of fiber-optic distributed Brillouin sensors. Here, we investigate the amplification effect of a 980-nm pump laser on Brillouin gain spectrum in an erbium-doped optical fiber. The Brillouin-scattered Stokes power increased exponentially with increasing pump power, exhibiting approximately 87% enhancement at 252 mW compared with the Stokes power obtained without the pump. This suggests that a more significant increase in the Stokes power is feasible with a higher-power 980-nm pump laser.

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“…The fiber optic nerve system of the Brillouin optical correlation-domain analysis (BOCDA) [1][2][3] or reflectometry (BOCDR) [4][5][6] takes use of the correlation-domain continuous-wave technique, which is more advantageous than the Brillouin optical time-domain analysis (BOTDA) [7,8] and reflectometry (BOTDR) [9,10]. Fiber optic nerve systems (BOCDA and BOCDR) have been theoretically investigated and experimentally realized to provide outstanding performances in diagnosis of fully-distributed strain or temperature disturbances with an extremely-high spatial resolution of from centimeters [1,2,4,5] to several millimeters [3,6] along the whole fiber under test (FUT).…”

Section: Introductionmentioning

confidence: 99%

“…Fiber optic nerve systems (BOCDA and BOCDR) have been theoretically investigated and experimentally realized to provide outstanding performances in diagnosis of fully-distributed strain or temperature disturbances with an extremely-high spatial resolution of from centimeters [1,2,4,5] to several millimeters [3,6] along the whole fiber under test (FUT). Regardless of the ability of how short segment can be diagnosed, either BOCDA/R or BOTDA/R via measurement of a single parameter (i.e., Brillouin frequency shift, BFS) is unable to distinguish the response to strain from the response to temperature [11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Distributed discrimination of strain and temperature based on Brillouin dynamic grating in an optical fiber

et al. 2013

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This paper reviews distributed discrimination of strain and temperature by use of an optical fiber based on fiber optic nerve systems. The preliminary method based on multiple resonance peaks of the Brillouin gain spectrum in a specially-designed fiber is firstly introduced. The complete discrimination of strain and temperature based on the Brillouin dynamic grating in a polarization maintaining fiber is extensively presented. The basic principle and two experimental schemes of distributed discrimination based on fiber optic nerve systems are demonstrated. The performance of the high discriminative accuracy (0.1 ℃-0.3 ℃ and 5 -12 ) and high spatial resolution (~10 cm) with the effective measurement points of about 50 for a standard system configuration or about 1000 for a modified one will be highly expected in real industry applications.

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Operation of Brillouin Optical Correlation-Domain Reflectometry: Theoretical Analysis and Experimental Validation

Cited by 67 publications

References 20 publications

Brillouin optical correlation domain reflectometry with lock-in detection scheme

Brillouin optical correlation domain reflectometry with lock-in detection scheme

Brillouin signal amplification in pumped erbium-doped optical fiber

Distributed discrimination of strain and temperature based on Brillouin dynamic grating in an optical fiber

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