Fundamental noise limitations to supercontinuum generation in microstructure fiber |
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Authors: | Corwin K L Newbury N R Dudley J M Coen S Diddams S A Weber K Windeler R S |
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Institution: | National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA. |
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Abstract: | Broadband noise on supercontinuum spectra generated in microstructure fiber is shown to lead to amplitude fluctuations as large as 50% for certain input laser pulse parameters. We study this noise using both experimental measurements and numerical simulations with a generalized stochastic nonlinear Schr?dinger equation, finding good quantitative agreement over a range of input-pulse energies and chirp values. This noise is shown to arise from nonlinear amplification of two quantum noise inputs: the input-pulse shot noise and the spontaneous Raman scattering down the fiber. |
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