Distributed vibration sensor with a lasing phase-sensitive OTDR

Correia, Marlon; Margulis, Walter; Gomes, Anderson S. L.; Weid, Jean-Pierre Von Der

doi:10.1364/oe.476182

Cited by 10 publications

(3 citation statements)

References 35 publications

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“…This can be either solved through further stabilisation of the enhanced-Rayleigh fibre (e.g., put in a thermally isolated sound-proof box), or explored as a temperature/strain sensor with high spatial resolution and high signal-to-noise ratio (SNR). A high SNR is expected because one would measure the wavelength drift of a strong oscillating light, not from a weak backscattered light as in most fibre-sensors, acting similar to a laser-sensor 37 , 38 .…”

Section: Resultsmentioning

confidence: 99%

A random optical parametric oscillator

Tovar,

von der Weid,

Wang

et al. 2023

Nat Commun

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Synchronously pumped optical parametric oscillators (OPOs) provide ultra-fast light pulses at tuneable wavelengths. Their primary drawback is the need for precise cavity control (temperature and length), with flexibility issues such as fixed repetition rates and marginally tuneable pulse widths. Targeting a simpler and versatile OPO, we explore the inherent disorder of the refractive index in single-mode fibres realising the first random OPO – the parametric analogous of random lasers. This novel approach uses modulation instability (χ(3) non-linearity) for parametric amplification and Rayleigh scattering for feedback. The pulsed system exhibits high inter-pulse coherence (coherence time of ~0.4 ms), offering adjustable repetition rates (16.6–2000 kHz) and pulse widths (0.69–47.9 ns). Moreover, it operates continuously without temperature control loops, resulting in a robust and flexible device, which would find direct application in LiDAR technology. This work sets the stage for future random OPOs using different parametric amplification mechanisms.

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Section: Resultsmentioning

confidence: 99%

A random optical parametric oscillator

Tovar,

von der Weid,

Wang

et al. 2023

Nat Commun

Self Cite

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“…Spatial‐division‐multiplexing together with the WDM technique would be incorporated into RFL‐based sensors to enhance sensing capacity. On the other hand, distributed optical fiber sensing based on RFLs as shown in [ 254,255 ] would be another new research direction of RFLs to realize both distributed and high‐capacity optical fiber sensing. In the field of supercontinuum generation stimulated by random fiber lasing, one future direction could be the extension of the supercontinuum spectral range toward the MIR region, by combining the Q‐switched high peak power TRFL and the MIR nonlinear fibers.…”

Section: Discussionmentioning

confidence: 99%

Spectral Manipulations of Random Fiber Lasers: Principles, Characteristics, and Applications

Han,

Cheng,

Tao

et al. 2024

Laser & Photonics Reviews

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Random fiber lasers (RFLs), a new variety of random lasers, have become a vigorous research spot over the past decades. RFLs possess superiorities in efficiency, structural flexibility, directionality, cost, etc. Particularly, RFLs are discovered to be good platforms for the construction of various forms of high‐performance lasers. Herein, recent progress in the spectral manipulation of RFLs and the applications of spectral‐tailored RFLs are reviewed. Both theoretical and experimental investigations of the unique spectral properties of RFLs up to now are presented. The superior wavelength flexibility of RFLs which can achieve any desired lasing wavelength in the 1–2.1 µm band is highlighted. Via spectral manipulation, RFLs have shown the capability of high‐spectral‐purity, narrow‐bandwidth, and multi‐wavelength output. Furthermore, the RFLs featuring unique spectral properties can lead to various promising applications, which are concisely summarized, including optical fiber communication, optical fiber sensing, imaging, supercontinuum generation, nonlinear‐frequency conversion, mid‐infrared lasing pump sources, and laser‐driven inertial confinement fusion motivation. The challenges and prospects for RFLs are also discussed.

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“…In traditional φ-OTDR systems, with the extension of sensing distance, the signal strength exponentially decreases, causing extreme difficulty in long-distance signal detection. The Pontifical Catholic University of Rio de Janeiro [76] used Rayleigh scattering of dispersion shifted fiber (DSF) to provide random distribution feedback, and the backscattered light was synchronously amplified in the laser cavity, as shown in Figure 13. The pump was regulated by a current controller (CC) and a temperature controller (TC), and an erbium-doped fiber (EDF) was inserted into the fiber loop to provide bidirectional optical amplification.…”

Section: Rayleigh Scattering-based Rfl As a Sensitive Elementmentioning

confidence: 99%

Review of Random Fiber Lasers for Optical Fiber Sensors

Tian,

Zhang,

Huang

2023

Sensors

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A random fiber laser does not need a traditional resonant cavity and only uses the multiple scattering of disordered media to provide feedback to achieve laser output. Therefore, it has the advantages of a simple structure, narrow linewidth, and low noise and is particularly suitable for fiber optic sensors. This paper provides an introduction to the categories and corresponding principles of random fiber lasers. The research progress of random fiber lasers in the sensing field in recent years, including various aspects of random fiber lasers as low-noise light sources or sensitive elements for fiber sensing systems, is the main focus. Finally, the future development trend of random fiber lasers for optical fiber sensors is explored.

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Distributed vibration sensor with a lasing phase-sensitive OTDR

Cited by 10 publications

References 35 publications

A random optical parametric oscillator

A random optical parametric oscillator

Spectral Manipulations of Random Fiber Lasers: Principles, Characteristics, and Applications

Review of Random Fiber Lasers for Optical Fiber Sensors

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