Application of phosphate doped fibers for OFDR dosimetry

Faustov, Alexey; Gusarov, Andreï; Mégret, Patrice; Wuilpart, Marc; Zhukov, A. V.; Novikov, S. G.; Светухин, В. В.; Fotiadi, Andrei A.

doi:10.1016/j.rinp.2016.02.001

Cited by 24 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Compact cost-effective laser sources with tunable coherency are of the great demand for a number of potential applications [1][2][3][4][5][6][7][8][9] . Among them are high-resolution spectroscopy, phase-coherent optical communications, microwave photonics, coherent optical spectrum analyze, and distributed fiber optics sensing [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] . Therefore, linewidth narrowing and stabilization of semiconductor laser light generation are of topical research interest.…”

Section: Introductionmentioning

confidence: 99%

Stabilizing DFB laser injection-locked to an external polarization maintaining optical fiber ring cavity

Panyaev

Itrin

Коробко

et al. 2023

Optical Sensors 2023

View full text Add to dashboard Cite

We report on linewidth narrowing and stabilization of semiconductor DFB laser implemented through its self-injection locking to an external fiber ring cavity in conjunction with an active optoelectronic feedback circuit controlled by a simple low-cost USB-DAQ card. The system enables narrowing of the DFB laser linewidth below ~0.5 kHz and drastically reduced the laser phase noise. Specifically, the laser configuration is fully spliced from the polarization maintaining (PM) single-mode optical fiber that exhibits significantly improved stability against the environment noise. Drastic narrowing of the DFB laser linewidth down to ~310 Hz and a phase noise less than -100 dBc/Hz (>30 kHz) are achieved with the PM fiber ring cavity built from a single fiber coupler. The reported PM laser configuration is of great interest for many laser applications where a narrow sub-kHz linewidth, simple design and low cost are important.

show abstract

Section: Introductionmentioning

confidence: 99%

Stabilizing DFB laser injection-locked to an external polarization maintaining optical fiber ring cavity

Panyaev

Itrin

Коробко

et al. 2023

Optical Sensors 2023

View full text Add to dashboard Cite

show abstract

“…Distributed optical fiber sensors show superior advantages over their electronic counterparts due to their high sensitivity to external disturbances and low loss transmission, which are important for remote sensing [ 1 ]. Unlike single-point optical fiber sensors [ 2 , 3 ], distributed optical fiber sensors can interrogate and spatially resolve measurands along an optical fiber due to their specific sensing mechanisms [ 4 , 5 , 6 , 7 ]. Among them, Brillouin-based distributed sensors [ 8 , 9 , 10 ] have attracted immense interest in recent years in fields such as the health monitoring of large structures in oil and gas pipelines [ 11 ], railways and high-voltage transmission lines [ 12 ], high-temperature distributed measurement in industrial applications [ 13 ], distributed strain measurement for cracks detection [ 14 ], and structural health monitoring [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

Application of Dual-Frequency Self-Injection Locked DFB Laser for Brillouin Optical Time Domain Analysis

López-Mercado

Коробко

Zolotovskii

et al. 2021

Sensors

View full text Add to dashboard Cite

Self-injection locking to an external fiber cavity is an efficient technique enabling drastic linewidth narrowing of semiconductor lasers. Recently, we constructed a simple dual-frequency laser source that employs self-injection locking of a DFB laser in the external ring fiber cavity and Brillouin lasing in the same cavity. The laser performance characteristics are on the level of the laser modules commonly used with BOTDA. The use of a laser source operating two frequencies strongly locked through the Brillouin resonance simplifies the BOTDA system, avoiding the use of a broadband electrooptical modulator (EOM) and high-frequency electronics. Here, in a direct comparison with the commercial BOTDA, we explore the capacity of our low-cost solution for BOTDA sensing, demonstrating distributed measurements of the Brillouin frequency shift in a 10 km sensing fiber with a 1.5 m spatial resolution.

show abstract

“…Advanced techniques of fiber optic distributed measurements are very promising for a number of applications such as pressure, strain, vibration and temperature measurements [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18]. Among distributed optical fiber sensors, distributed acoustic/vibration sensors (DAS/DVS), which are based on the use of an optical fiber to localize and measure acoustic signals or vibrations along its length, are becoming increasingly attractive for a wide range of applications.…”

Section: Introductionmentioning

confidence: 99%

Cost-effective solution for phase-OTDR distributed acoustic/vibration sensing

Spirin

López-Mercado²,

Jason

et al. 2019

Real-Time Measurements, Rogue Phenomena, and Single-Shot Applications IV

View full text Add to dashboard Cite

Self-injection locking-an efficient method to improve the spectral performance of semiconductor lasers without active stabilization-has already demonstrated its high potential for operation with single-longitude-mode fiber lasers. Recently, we demonstrated that self-injection locking of a conventional DFB laser through an external fiber optic ring cavity causes a drastic decrease of the laser linewidth and makes possible its direct application in a phase-sensitive optical time domain reflectometry (φ-OTDR) acoustic sensor system. Detection and localization of dynamic perturbations in the optical fiber were successfully demonstrated at the distance of 9270 m. However, the ability of the system to restore the perturbating frequency spectrum was not quantified. Here, we have evaluated the performance of a φ-OTDR system for acoustic/vibration measurements utilizing a conventional telecom DFB laser self-stabilized through an external PM optical fiber ring resonator. The use of PM fiber components prevents the polarization mode-hopping that is proved to be a major source of the laser instability, resulting in single frequency laser operation with 6 kHz linewidth. The laser diode current and the laser fiber configuration temperature both have been stabilized with accuracies better than 0.3%. All laser components have been placed into a special insulating box to protect the laser from external perturbations. Under these conditions, the typical duration of laser operation in self-maintaining stabilization regime is ~30 minutes. The laser long-term frequency drift is estimated to be less than ~30 MHz/min. This low-cost solution is directly compared with the use of a commercial, ultra-narrow linewidth (~ 100 Hz) fiber laser implemented into the same setup. Both systems are tested for measurement of the frequency of vibration applied to a fiber at a distance of 3500 m. The obtained SNR value higher than 6 dB demonstrates the ability of the DFB laser to be used in distributed measurements of vibrations with frequencies up to 5600 Hz with a spatial resolution of 10 meters.

show abstract

Application of phosphate doped fibers for OFDR dosimetry

Cited by 24 publications

References 4 publications

Stabilizing DFB laser injection-locked to an external polarization maintaining optical fiber ring cavity

Stabilizing DFB laser injection-locked to an external polarization maintaining optical fiber ring cavity

Application of Dual-Frequency Self-Injection Locked DFB Laser for Brillouin Optical Time Domain Analysis

Cost-effective solution for phase-OTDR distributed acoustic/vibration sensing

Contact Info

Product

Resources

About