Results 211 to 220 of about 1,635,520 (251)
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SPIE Proceedings, 2003
This paper describes the fundamental concepts that characterize the phase modulation (PM) noise and amplitude modulation (AM) noise of electronic devices in the frequency-domain, and their relationship to tradition time-domain measures of frequency stability. The statistical confidence of the data is discussed.
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This paper describes the fundamental concepts that characterize the phase modulation (PM) noise and amplitude modulation (AM) noise of electronic devices in the frequency-domain, and their relationship to tradition time-domain measures of frequency stability. The statistical confidence of the data is discussed.
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2018
This chapter recalls the definitions and the insights introduced in Chapter 2 and elaborates on them in mathematical terms. It gives the reader a more complete understanding of the subject from a mathematical point of view, and provide tools and techniques to analyze quantitatively jitter issues in real systems.
Ali Sheikholeslami, Nicola Da Dalt
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This chapter recalls the definitions and the insights introduced in Chapter 2 and elaborates on them in mathematical terms. It gives the reader a more complete understanding of the subject from a mathematical point of view, and provide tools and techniques to analyze quantitatively jitter issues in real systems.
Ali Sheikholeslami, Nicola Da Dalt
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1995
A new derivation of the canonical description of optical phase is given, and it is shown that any covariant method of phase estimation (such as heterodyne phase detection) may be interpreted as a noisy measurement of canonical phase. An important example is Gaussian noise, and it is demonstrated that phase-based communication is relatively robust with ...
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A new derivation of the canonical description of optical phase is given, and it is shown that any covariant method of phase estimation (such as heterodyne phase detection) may be interpreted as a noisy measurement of canonical phase. An important example is Gaussian noise, and it is demonstrated that phase-based communication is relatively robust with ...
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, 1998 A frequency synthesizer or signal source is expected to provide a pure spectral signal. There should be no unwanted amplitude or frequency/phase modulation in the output spectrum. As we will discuss shortly, undesired phase modulation on the local oscillator in communications receivers, can reduce the channel selectivity and degrade the bit error rate ...
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Effect of losses on phase noise
Journal of Modern Optics, 2003Abstract We study the effect of losses on the phase noise of single-mode field states. The losses are described by the standard loss master equation, and it is used to find an upper bound for the increase in the phase noise as a function of time. We compare the time dependence of the phase noise of an initial coherent state to that of a state that ...
Mark Hillery +3 more
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Phase noise estimation based on direct detection using phase noise to intensity noise conversion
2013 12th International Conference on Optical Communications and Networks (ICOCN), 2013We proposed a method to estimate the laser phase noise using the phase noise to intensity noise conversion based on the direct detection (DD) technique. It is shown by simulation that the estimated results approach when the laser line-width is no larger than 1MHz. Besides, compared with coherent detection -based phase noise estimation, the DD technique
Yuan Bao +5 more
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Noise Induced Phase Transitions
1996Models of macroscopic systems with an infinite number of microscopic degrees of freedom perturbed by external noise can undergo sharp phase transitions which are however modified or even induced by the external noise. These non-equilibrium phase transitions exhibit the features characteristic of equilibrium phase transitions such as symmetry breaking ...
Parrondo, J.M.R. +1 more
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Izmeritel`naya Tekhnika
The necessity of developing of an initial relative phase noise level standard to ensure metrological traceability of small values of phase noise measurements. The relevance of creating a standard is due to the increased requirements for short-term frequency stability of modern signal generators and highly stable quartz oscillators, characterized by a ...
Nikolay R. Bazhenov +2 more
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The necessity of developing of an initial relative phase noise level standard to ensure metrological traceability of small values of phase noise measurements. The relevance of creating a standard is due to the increased requirements for short-term frequency stability of modern signal generators and highly stable quartz oscillators, characterized by a ...
Nikolay R. Bazhenov +2 more
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Noise reducing phase retrieval
Applied Optics, 2015In the context of imaging using the Hanbury Brown-Twiss effect, this paper describes a phase retrieval algorithm capable of producing high-quality images despite large amounts of noise in the coherence magnitude measurement data. Previously the problem was conceived as two distinct steps: coherence magnitude estimation, followed by image construction ...
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Phase noise in oscillators: DAEs and colored noise sources
1998 IEEE/ACM International Conference on Computer-Aided Design. Digest of Technical Papers (IEEE Cat. No.98CB36287), 1998Oscillators are key components of electronic systems. Undesired perturbations, i.e. noise, in practical electronic systems adversely affect the spectral and timing properties of oscillators resulting in phase noise, which is a key performance limiting factor, being a major contributor to bit-error-rate (BER) of RF communication systems, and creating ...
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