Modified Expression for Spatial Resolution in Optical Correlation-Domain Reflectometry

Kiyozumi, Takaki; Noda, Kohei; Zhu, Guangtao; Nakamura, Kentaro; Mizuno, Yosuke

doi:10.1109/tim.2023.3346492

IEEE Trans. Instrum. Meas.

2024

DOI: 10.1109/tim.2023.3346492

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Modified Expression for Spatial Resolution in Optical Correlation-Domain Reflectometry

Takaki Kiyozumi,

Kohei Noda,

Guangtao Zhu

et al.

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2024

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Cited by 3 publications

(1 citation statement)

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“…The spatial resolution is defined as the full width at half maximum (FWHM) of Eq. ( 3), which is theoretically given by 34)…”

mentioning

confidence: 99%

Simplified correlation-domain LiDAR without long delay fiber

Kiyozumi,

Yoshida,

Noda

et al. 2024

Jpn. J. Appl. Phys.

Self Cite

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Light detection and ranging (LiDAR) measures distance by emitting light onto targets and analyzing reflections. In addition to conventional LiDAR systems based on time-of-flight and frequency-modulated continuous-wave methods, correlation-domain LiDAR has been developed but with some challenges in miniaturization due to the use of a long delay fiber. This study addresses this issue by specifying modulation conditions and removing the delay fiber. We then demonstrate the distance measurement by this simplified correlation-domain LiDAR. This result enhances the potential of integrating correlation-domain LiDAR into various applications.

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“…The spatial resolution is defined as the full width at half maximum (FWHM) of Eq. ( 3), which is theoretically given by 34)…”

mentioning

confidence: 99%

Simplified correlation-domain LiDAR without long delay fiber

Kiyozumi,

Yoshida,

Noda

et al. 2024

Jpn. J. Appl. Phys.

Self Cite

View full text Add to dashboard Cite

show abstract

Ghost-Peak Suppression for Optical Correlation-Domain Reflectometry by Gigahertz-Order Frequency Shift

Kiyozumi,

Yoshida,

Noda

et al. 2024

J. Lightwave Technol.

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Extension of measurement range in optical correlation-domain reflectometry based on temporal gating scheme

Suzuki,

Sakamoto,

Lee

et al. 2024

Jpn. J. Appl. Phys.

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Optical correlation-domain reflectometry (OCDR), which measures the locations and reflectivities of faulty connections and other reflective points along an optical fiber, is valued for its random accessibility, real-time operation, and cost-effective implementation. In Brillouin OCDR for distributed strain and temperature sensing, there is a trade-off between spatial resolution and measurement range. To address this, a temporal gating scheme has been developed. Recent studies reveal that this trade-off also applies to simplified OCDR with no frequency shifter, necessitating methods to extend the measurement range while maintaining spatial resolution. This work experimentally demonstrates the effectiveness of the temporal gating scheme in simplified OCDR.

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Modified Expression for Spatial Resolution in Optical Correlation-Domain Reflectometry

Cited by 3 publications

References 52 publications

Simplified correlation-domain LiDAR without long delay fiber

Simplified correlation-domain LiDAR without long delay fiber

Ghost-Peak Suppression for Optical Correlation-Domain Reflectometry by Gigahertz-Order Frequency Shift

Extension of measurement range in optical correlation-domain reflectometry based on temporal gating scheme

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