phase modulation

n. Abbr. pm or p-m

A method of signal transmission in which the phase of a carrier wave is varied to transmit information contained in the signal.

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

phase modulation

(Electronics) a type of modulation, used in communication systems, in which the phase of a radio carrier wave is varied by an amount proportional to the instantaneous amplitude of the modulating signal

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

phase′ modula`tion

radio transmission in which the carrier wave is modulated by changing its phase to transmit the amplitude and pitch of the signal.

[1925–30]

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Noun

phase modulation - modulation of the phase of the carrier wave

modulation - (electronics) the transmission of a signal by using it to vary a carrier wave; changing the carrier's amplitude or frequency or phase

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References in periodicals archive

This case indicates that scattering can bring about a decreasing of the impacts of cross phase modulation and four waves mixing in the dispersive fiber.

The Optical Soliton Propagation in Nonlinear Dispersive Fiber

The idea of this method with respect to a DDS is based on the isolation the clock frequency with parasitic phase modulation in the spectrum of the output signal of digital-analog converter with, its comparison with the input clock frequency of the synthesizer (without phase distortions) and the formation of a control signal.

Analysis of Noise Characteristics of Multichannel Systems of the Formation of Signals of Georadars with Synthesized Aperture

One consequence of phase modulation is angular spectrum aberration, which also describes the phenomenon in the insets of Figure 1.

Numerical Simulations of Transfer of Spatial Beam Aberrations in Optical Parametric Chirped-Pulse Amplification

Byun et al., "All-optical AND gate using probe and pump signals as the multiple binary points in cross phase modulation," Japanese Journal of Applied Physics, vol.

Phase-Shift Keying Modulated Data Signal Using SOA-MZI-Based All-Optical Logic AND Gate at 80 Gb/s

However, optical phase modulation technique has been proposed to increase the capacity and reach in the access, in response to the demand of services and applications in future smart cities.

Comparacion de tecnicas de compensacion electronica en redes de acceso con modulacion de fase optica y deteccion coherente

As it was mentioned previously, there are 2 main goals of this research--investigation of impact of FOPA pump phase modulation and of polarization dependence of the FOPA provided gain on the generated idler spectral components.

FOPA pump phase modulation and polarization impact on generation of idler components

These phase modulation effects have been observed before [43] using nanosecond laser pulses and an experimental set-up shown in Figure 9(a).

Maxwell Stress Induced Flow-Deformation and Optical Nonlinearities in Liquid Crystals

Keywords:Self Phase Modulation Tributary Mapping Multiplexing Dispersion Compensation

SELF PHASE MODULATION EFFECTS ON DISPERSION COMPENSATED TRIBUTARY MAPPING MULTIPLEXING TRANSMISSION

The 34-year-old, who moved to Durham from his native Hungary in 2004, will start studying the development and chemical application of phase modulation nanoscopy - an advanced form of microscopic imaging using extremely high-resolution technology to examine cells - on October 1.

Male pill doctor gets research fellowship