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AssigneesThe Regents of the University of Michigan, The United States of America as represented by the Secretary of the Army
InventorsMohammed N. Islam, George A. Nowak, Jaeyoun Kim
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A method and system are disclosed for generating a broadband spectral continuum using short spans of constant-dispersion, dispersion-shifted fibers. The continuum generation results from the combined effects of pulse compression and spectral shaping. Pulse compression is achieved through soliton-effect compression in one or more stages of anomalous dispersion fiber, which lengths are determined by the occurrence of the first optimal compression of the corresponding order of soliton. The spectral shape results from 3rd order dispersion effects on the evolution of the pulse shape as it propagates through the final segment(s) of the fiber span. The pulse area of the incident pulse determines the fiber properties required to optimize compression. The sign and magnitudes of the 2nd and 3rd order dispersions in the final span(s) as well as the pulse width at the input to the final span determine the continuum extent, flatness and symmetry. The continuum generated in this manner is coherent and stable, making it an attractive alternative as a spectrally-sliced source for short pulse, multiple wavelength channels.
A method for generating a broadband spectral continuum from a higher-order soliton pulse, the method comprising the steps of:
A system for generating broadband spectral continuum from a higher-order soliton pulse, the system comprising:
A method of making an anomalous dispersion fiber including at least one pulse compression stage for generating a compressed soliton pulse having incident pulse energy, Po, and pulse width, τ, from a higher-order, N, soliton pulse also having incident pulse energy, Po, and pulse width, τ, the fiber also including a spectral shaping stage for generating a broadband spectral continuum from the compressed soliton pulse, the method comprising the steps of:
Dependencies are inferred from the claim text.