Topic
Brillouin scattering
About: Brillouin scattering is a research topic. Over the lifetime, 11426 publications have been published within this topic receiving 178306 citations.
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TL;DR: Time-domain reflectometry of spontaneous Brillouin scattering in a single-mode optical fiber is performed with a coherent self-heterodyne detection system containing a recently proposed external frequency translator and a single light-wave source.
Abstract: Time-domain reflectometry of spontaneous Brillouin scattering in a single-mode optical fiber is performed with a coherent self-heterodyne detection system containing a recently proposed external frequency translator and a single light-wave source. The light wave is divided into probe and reference light waves. The frequency of the probe light wave is upconverted by the translator by an amount approximately equal to the Brillouin frequency shift. The frequency-converted probe is launched into the fiber and spontaneously Brillouin scattered. As the frequency of the scattered probe is downconverted to near that of the reference light wave, coherent self-heterodyne detection of spontaneous Brillouin scattering becomes possible without having to use a fast-speed detector.
77 citations
TL;DR: A self-consistent description of the laser dynamics is proposed that quantitatively reproduces the temporal structure of pulsation and is also attractive for analysis of laser stability and statistics.
Abstract: Backward light scattering can cause passive Q switching in fiber lasers. We propose a self-consistent description of the laser dynamics. Our model quantitatively reproduces the temporal structure of pulsation and is also attractive for analysis of laser stability and statistics. The validity of the model is directly verified in an experiment.
77 citations
TL;DR: In this paper, the authors investigated the effect of the optical fiber length on the performance of optical fiber for mm-wave generation in a radio-over-fiber (ROF) system.
Abstract: Stimulated Brillouin scattering (BS) in optical fibers is investigated for the generation of millimeter waves (mm-waves) for radio over fiber systems. Predictions of a numerical simulation are compared to experimental results, and both are in good agreement with each other. With the numerical simulation, the optimum parameter for the technique is calculated. It will be shown that the optimum length of the fiber for BS depends on the signal rather than on the pump power. This gives us the opportunity to adjust the parameters for any given fiber length. The advantages and limits of the proposed method for mm-wave generation are discussed.
77 citations
TL;DR: In this paper, a one-end-access high-speed distributed strain sensing with high spatial resolution in optical fibers based on Brillouin optical correlation-domain reflectometry was demonstrated.
Abstract: We demonstrate a one-end-access high-speed distributed strain sensing with high spatial resolution in optical fibers based on Brillouin optical correlation-domain reflectometry. In this work, Brillouin frequency shifts (BFSs) of a 3- cm fiber section are measured with 13- mm spatial resolution and 50- Hz sampling rate. To our knowledge, this spatial resolution is the best result ever reported in Brillouin scattering-based reflectometers, and is superior to that obtained in Brillouin optical time-domain analyzers, though the signal-to-noise ratio is deteriorated. Data processing to find the peak in the Brillouin spectrum is newly introduced to show directly the BFS with a sampling rate of 19 Hz, and the measurement of vibrated strains at frequencies of up to 4 Hz is presented under 22- cm resolution.
77 citations
TL;DR: This novel method for producing zero-gain slow & fast light takes advantage of the great flexibility of stimulated Brillouin scattering in optical fibers to generate synthesized gain spectra, resulting in a synthesized spectral profile identical to an ideal electromagnetically-induced transparency.
Abstract: Slow & fast light with null amplification or loss of a light signal is experimentally demonstrated. This novel method for producing zero-gain slow & fast light takes advantage of the great flexibility of stimulated Brillouin scattering in optical fibers to generate synthesized gain spectra. Generation of optical delays and advancements with minor amplitude change is realized through the superposition of gain and loss profiles showing very different spectral widths, resulting in a synthesized spectral profile identical to an ideal electromagnetically-induced transparency.
76 citations