Amplitude and phase modulation of radiation in a travelling-wave amplifier based on a laser diode

An analytical solution (in quadratures) to the problem of propagation of quasi-monochromatic optical signal in a semiconductor amplifier under harmonic modulation of its pump current is obtained for the first time. It is shown that the modulation of the output radiation has amplitude and phase featu...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2013-01, Vol.43 (8), p.699-705, Article 699
Main Authors: Bogatov, A.P., D'yachkov, N.V., Drakin, A.E., Gushchik, T.I.
Format: Article
Language:English
Subjects:
AMPLIFIERS
AMPLITUDES
ANALYTICAL SOLUTION
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
Gain
LASER RADIATION
Mathematical analysis
mobile optical communication
MODULATION
MONOCHROMATIC RADIATION
optical travelling-wave amplifier
Phase modulation
Pumps
quantum-well heterostructure
SEMICONDUCTOR MATERIALS
semiconductor optical amplifier
Semiconductors
SIGNALS
TRAVELLING WAVES
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Summary:An analytical solution (in quadratures) to the problem of propagation of quasi-monochromatic optical signal in a semiconductor amplifier under harmonic modulation of its pump current is obtained for the first time. It is shown that the modulation of the output radiation has amplitude and phase features. The relation is found between the coefficients of the amplitude and phase modulation with the effect of gain saturation taken into account. Adequacy of the results obtained is confirmed experimentally.
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2013v043n08ABEH015166