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Phase noise in semiconductor lasers: A theoretical approach
IEEE Journal of Quantum Electronics, 1983Noise phenomena in semiconductor lasers have been extensively studied from an experimental point of view because of their importance in designing optical communication systems. Recently, a semiclassical theory of laser noise has been presented [1].
P. Spano, S. Piazzolla, M. Tamburrini
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Laser Phase Noise Tolerance of Probabilistically-Shaped Constellations
Optical Fiber Communication Conference, 2018We numerically confirmed that required-OSNR gain was obtained by probabilistically-shaped 64/256 QAM compared with uniformly-shaped 16/64 QAM in not only arbitrary white Gaussian noise condition but also in phase noise condition.
Seiji Okamoto +3 more
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Laser excess noise reduction in optical phase-shift measurements
Applied Optics, 2003We describe an optical detection scheme that reduces laser excess noise in measurements of small optical phase shifts. The scheme improves the sensitivity of the balanced differential detection. Analysis of the scheme and comparison with the conventional detection are presented.
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Effect of laser and RF oscillator phase noises
2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535), 2004The effect of phase noises from a laser and an oscillator on radio over fiber (RoF) systems is analyzed and discussed with a power spectral density (PSD) function. It is shown that the carrier to noise ratio (CNR) penalty is deeply related to the bandwidth of a electrical filter at a receiver and the phase noise from a radio frequency (RF) signal ...
null Tae-Sik Cho +3 more
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The Effects of Laser Phase Noise on Laser Radar Performance
1992Abstract : Laser phase noise is shown to degrade the sensitivity in target vibration measurements using a CW laser with an FM discriminator.
A. L. Kachelmyer +4 more
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Effect of laser phase noise in Sagnac interferometers
Journal of Lightwave Technology, 1993A theoretical analysis of the responsivity and the noise caused by backscattering in a Sagnac interferometer used as a sensor for reciprocal measurands, such as acoustic waves, is presented. Both Rayleigh backscattering and reflections from splices are taken into account. The noise power is found to increase proportionally to the source coherence time,
K. Krakenes, K. Blotekjaer
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Conference on Lasers and Electro-Optics/International Quantum Electronics Conference, 2009
Using intracavity active phase modulation, we have verified the theory of Haus and Rana and realized timing jitter reduction from 304 fs to 150 fs integrated to Nyquist frequency on a 10.24 GHz actively mode-locked pulse train.
Ozharar, Sarper +3 more
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Using intracavity active phase modulation, we have verified the theory of Haus and Rana and realized timing jitter reduction from 304 fs to 150 fs integrated to Nyquist frequency on a 10.24 GHz actively mode-locked pulse train.
Ozharar, Sarper +3 more
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Comparison of laser phase and suppression of noise
AIP Conference Proceedings, 1986The sensitivity and accuracy of the usual methods for comparing the phases of two beams of light are affected by the intensity noise of environment and light source, although they can be improved by a lock-in circuit only for a periodic signal.
Xuan-Min Yang, Ming Yi, Zong-Hua Huan
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Influence of laser phase noise on single-frequency semiconductor laser system
Conference on Lasers and Electro-Optics, 1984For a single-frequency constant amplitude laser source operating far above threshold, the random quantum phase fluctuations are usually considered the major source of optical spectral spread. The phase noise of a single-frequency semiconductor laser is a parameter of major importance in applications in which the temporal coherence properties of optical
Philippe Gallion, Guy Debarge
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Speckle phase noise in coherent laser ranging: fundamental precision limitations
Optics Letters, 2014Frequency-modulated continuous-wave laser detection and ranging (FMCW LADAR) measures the range to a surface through coherent detection of the backscattered light from a frequency-swept laser source. The ultimate limit to the range precision of FMCW LADAR, or any coherent LADAR, to a diffusely scattering surface will be determined by the unavoidable ...
Esther, Baumann +5 more
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