Optical: systems and elements – Optical modulator – Light wave temporal modulation
Patent
1996-01-22
1997-11-18
Ben, Loha
Optical: systems and elements
Optical modulator
Light wave temporal modulation
359285, 359305, 359308, 359563, 385 37, 385 28, G02F 109
Patent
active
056893612
ABSTRACT:
An apparatus for, and method of, decreasing a temporal duration of an optical input pulse having an input power spectrum associated therewith, the apparatus and method operative on at least unchirped optical input pulses. The apparatus comprises: (1) a zero-dispersion pulse shaper for receiving the optical input pulse and spectrally spreading the input pulse to produce a spectrally-spread pulse and (2) a modulator array interposed within the zero-dispersion pulse shaper for receiving the spectrally-spread pulse and selectively attenuating a portion of the power spectrum of the spectrally-spread pulse by a predetermined amount to produce a selectively-attenuated spectrally-spread pulse, the zero-dispersion pulse shaper focusing and recombining the selectively-attenuated spectrally-spread pulse to produce an output pulse having a broader power spectrum than the input pulse, the output pulse further having a temporal duration less than the input pulse, regardless of whether the input pulse is chirped.
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patent: 5526171 (1996-06-01), Warren
Andrew M. Weiner et al., "Programmable Shaping of Femtosecond Optical Pulses by Use of 128-Element Liquid Crystal Phase Modulator," IEEE Journal of Quantum Electronics, vol. 28, No. 4, Apr. 1992, pp. 908-920.
A.M.Weiner et al., "High-resolution femtosecond pulse shaping," J. Opt. Soc. Am. B, vol. 5, No. 8, Aug. 1988, pp. 1563-1572.
Damen Theodoor Charlouis
Nuss Martin C.
Ben Loha
Lucent Technologies - Inc.
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