Amplification of broadband noise pumped by two lasers in optical fibers
JOSA B, Vol. 18, Issue 10, pp. 1428-1435 (2001)
http://dx.doi.org/10.1364/JOSAB.18.001428
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Abstract
A theoretical and experimental investigation of catastrophic amplification of broadband noise in optical fibers near the zero-dispersion frequency (ν0) pumped by two lasers with frequencies that are symmetrically tuned relative to ν0 is presented. The effect is due to a four-wave mixing (FWM) process, phase matched up to third-order dispersion, between the spectral components of noise and the lasers. We observed a FWM gain of 16 dB (10-dB net gain) over a 22-nm bandwidth (limited by fourth-order dispersion) for 18-dBm power lasers at ±1 THz (8 nm) from ν0 in a 25-km-long dispersion-shifted fiber. A simple analytical model is proposed that will permit us to investigate this effect numerically in amplified links with concatenated amplifiers and consider random fluctuations of ν0 along the fiber.
© 2001 Optical Society of America
[Optical Society of America ]
OCIS Codes
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4370) Fiber optics and optical communications : Nonlinear optics, fibers
(060.4510) Fiber optics and optical communications : Optical communications
Citation
J. M. Chávez Boggio, S. Tenenbaum, and H. L. Fragnito, "Amplification of broadband noise pumped by two lasers in optical fibers," J. Opt. Soc. Am. B 18, 1428-1435 (2001)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-18-10-1428
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