Publication

Effect of Dispersion Fluctuations on Longitudinal Gain Evolution in Phase-Sensitive Parametric Amplifiers

Luc Thévenaz, Camille Sophie Brès, Marcelo Alfonso Soto Hernandez, Mohammad Amin Shoaie, Andrey Denisov, Fatemeh Alishahi
2014
Conference Papers

Résumé

A Brillouin probing method is proposed to extract the distribution of signal power along phase-sensitive parametric amplifiers. Operation near the zero-dispersion-wavelength shows enhanced sensitivity to dispersion fluctuations, allowing effective extraction of dispersion map.

Source officielle

https://infoscience.epfl.ch/entities/publication/376cdbcf-6642-4347-92d0-c01b99fd7232

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Luc Thévenaz, Camille Sophie Brès, Marcelo Alfonso Soto Hernandez, Mohammad Amin Shoaie, Andrey Denisov, Fatemeh Alishahi
2014
Conference Papers

Résumé

Source officielle

https://infoscience.epfl.ch/entities/publication/376cdbcf-6642-4347-92d0-c01b99fd7232

À propos de ce résultat

Concepts associés (17)

Equalization (audio)

Equalization, or simply EQ, in sound recording and reproduction is the process of adjusting the volume of different frequency bands within an audio signal. The circuit or equipment used to achieve this is called an equalizer. Most hi-fi equipment uses relatively simple filters to make bass and treble adjustments. Graphic and parametric equalizers have much more flexibility in tailoring the frequency content of an audio signal.

Bass amplifier

A bass amplifier (also abbreviated to bass amp) is a musical instrument electronic device that uses electrical power to make lower-pitched instruments such as the bass guitar or double bass loud enough to be heard by the performers and audience. Bass amps typically consist of a preamplifier, tone controls, a power amplifier and one or more loudspeakers ("drivers") in a cabinet. While bass amps share many features with the guitar amplifiers used for electric guitar, they are distinct from other types of amplification systems, due to the particular challenges associated with low-frequency sound reproduction.

Dispersion (mécanique ondulatoire)

vignette|Dispersion de la lumière blanche au passage d'un dioptre. En mécanique ondulatoire, la dispersion est le phénomène affectant une onde se propageant dans un milieu dit « dispersif », c'est-à-dire dans lequel les différentes longueurs d’onde constituant l'onde ne se propagent pas à la même vitesse. On rencontre ce phénomène pour tous types d'ondes, comme la lumière, le son et les ondes mécaniques (vagues, séismes, etc.). À l'exception du vide, tous les milieux sont dispersifs à des degrés divers.

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