Results 171 to 180 of about 2,469 (206)
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Acoustic backscattering in water at the Rayleigh angle
The Journal of the Acoustical Society of America, 1980An acoustical pulse confined to a finite beam in water, incident on a plane solid surface generates a specular pulse. Also, a pulse radiated from the Rayleigh wave, which is generated on the surface is generated adjacent to and partially overlapping the specular pulse.
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Cooperative stimulated Brillouin and Rayleigh backscattering process in optical fiber
Optics Letters, 1998We observed an unusually narrow spectrum of Stokes field and Gaussian statistics of Stokes power for the stimulated Brillouin scattering (SBS) process in 300-m single-mode optical fiber with high Rayleigh losses. The measured characteristics of the Stokes radiation indicate that SBS lasing took place in the fiber.
A A, Fotiadi, R V, Kiyan
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Effect of Rayleigh backscattering in an optical passive ring-resonator gyro
Applied Optics, 1984Resonance characteristics of Rayleigh backscattering in an optical passive ring-resonator gyro (OPRG) are theoretically formulated taking the temporal coherence of the optical source into account. This resonance has two peaks with separation equal to the Sagnac phase shift when rotation is induced.
K, Iwatsuki, K, Hotate, M, Higashiguchi
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Wideband RF Analysis with Rayleigh Backscattering
CLEO 2024We present an RF spectrum analyzer capable of monitoring a 15GHz band with MHz-level resolution and 385kHz update rate. We use Rayleigh-backscattering in single-mode fiber to produce frequency-dependent speckle patterns to recover the RF spectrum.
Matthew J. Murray +4 more
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Continuous Measurement of Distributed Vibration Using Coherent Rayleigh Backscattering
2019 International Conference on Electronic Engineering and Informatics (EEI), 2019The detection of external vibration with optical pulses is the discrete sampling in phase-sensitive OTDR. In this paper, the continuous measurement of distributed vibration based on the phase-sensitive OTDR is demonstrated. The synchronized optical signal consisting of narrow optical pulses and the background light is injected into the sensing fiber as
Qian He +4 more
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Statistics of Rayleigh Backscatter From a Single-Mode Fiber
IEEE Transactions on Communications, 1987This paper contains a detailed analysis of the statistical properties of the Rayleigh backscatter signal from a single-mode optical fiber. Derivations of the first- and second-order statistics, autocorrelation function, and power spectral density of the backscatter wave are given.
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Spectral broadening of double Rayleigh backscattering in a distributed Raman amplifier
OFC 2001. Optical Fiber Communication Conference and Exhibit. Technical Digest Postconference Edition (IEEE Cat. 01CH37171), 2001We observe broadening of the double Rayleigh backscattering (DRBS) spectrum in a Raman amplifier. This effect is caused by pump intensity fluctuations combined with proper fiber dispersion and can significantly reduce DRBS multipath interference crosstalk.
Stuart Gray +2 more
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Statistical properties of Rayleigh backscattering in single-mode fibers
Journal of Lightwave Technology, 1990An analytical model that takes into account the influence of the laser linewidth on Rayleigh backscattering is given. For an unmodulated source the power spectral density is found to be identical to the delayed self-homodyne spectrum of the laser. The backscattered signal was measured for different laser linewidths, and the results are compared with ...
P. Gysel, R.K. Staubli
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Optical fiber identification using Rayleigh backscattered light
IEEE Photonics Technology Letters, 1992The remote identification of fibers from an office is a key technology for automatically updating the wiring database of an optical fiber network. This work proposes a new fiber identification method that uses the spatial dependency of the power of Rayleigh backscattered light.
T. Kuwabara +3 more
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Effect Of Phase Modulation On Coherent Rayleigh Backscatter Noise
SPIE Proceedings, 1987This paper presents the results of a series of experiments performed on a fibre optic gyroscope to determine the effect of different phase modulation frequencies and modulation depths on coherent backscatter noise. The results suggest that coherent backscatter is modulated in quadrature with the Sagnac signal although a presently unexplained noise ...
J. M. Mackintosh +2 more
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