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Optics Letters

Optics Letters


  • Vol. 28, Iss. 11 — Jun. 1, 2003
  • pp: 944–946

Noise amplification during supercontinuum generation in microstructure fiber

N. R. Newbury, B. R. Washburn, K. L. Corwin, and R. S. Windeler  »View Author Affiliations

Optics Letters, Vol. 28, Issue 11, pp. 944-946 (2003)

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Supercontinua generated by femtosecond pulses launched in microstructure fiber can exhibit significant low-frequency (<1-MHz) amplitude noise on the output pulse train. We show that this low-frequency noise is an amplified version of the amplitude noise that is already present on the input laser pulse train. Through both experimental measurements and numerical simulations, we quantify the noise amplification factor and its dependence on the supercontinuum wavelength and on the energy and duration of the input pulse. Interestingly, the dependence differs significantly from that of the broadband white-noise component, which arises from amplification of the input laser shot noise.

© 2003 Optical Society of America

OCIS Codes
(060.5530) Fiber optics and optical communications : Pulse propagation and temporal solitons
(060.7140) Fiber optics and optical communications : Ultrafast processes in fibers
(320.7140) Ultrafast optics : Ultrafast processes in fibers

N. R. Newbury, B. R. Washburn, K. L. Corwin, and R. S. Windeler, "Noise amplification during supercontinuum generation in microstructure fiber," Opt. Lett. 28, 944-946 (2003)

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  11. For a supercontinuum with fixed width and ignorning the Raman effect, a mean of 1 is correct, but given the large fluctuations the distinction is unimportant.

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