Impact of pump-phase modulation on dual-pump fiber-optic parametric amplifiers and wavelength converters

Modulation of pump phases required for suppressing stimulated-Brillouin scattering is shown to cause large power changes in both the amplified and wavelength-converted signals when dual-pump fiber-optic parametric amplifiers are used. The physical origin of power changes is related to pump-amplitude...

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Veröffentlicht in:	IEEE photonics technology letters 2005-10, Vol.17 (10), p.2053-2055
Hauptverfasser:	Yaman, F., Qiang Lin, Radic, S., Agrawal, G.P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Brillouin scattering Dispersions Fiber nonlinear optics Fiber optics Mathematical analysis Modulation Optical fiber amplifiers Optical fiber polarization Optical fibers optical phase conjugation Optical pumping Optical scattering Optical wavelength conversion Parametric amplifiers Phase modulation Photonics Power amplifiers Pumps Signal to noise ratio wavelength conversion
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Zusammenfassung:	Modulation of pump phases required for suppressing stimulated-Brillouin scattering is shown to cause large power changes in both the amplified and wavelength-converted signals when dual-pump fiber-optic parametric amplifiers are used. The physical origin of power changes is related to pump-amplitude modulations caused by fiber dispersion. Analytical as well as numerical calculations show that the signal-to-noise ratio of the signal or idler may reduce to below 23 dB when pump phases change rapidly with a sharp rise time.
ISSN:	1041-1135 1941-0174
DOI:	10.1109/LPT.2005.856346