Coherent white light source and optical devices therewith

Details Coherent white light source and optical devices therewith Coherent white light source and optical devices therewith

1996-02-23

1999-07-13

Lee, John D.

Coherent light generators

Optical fiber laser

359330, G02F 139

Patent

active

059236833

ABSTRACT:
A coherent white light source generates a uniform and continuous coherent white light spectra over 200 nm at a low pump power. The source is based on a pump light source which produces pump optical pulses at a wavelength .lambda..sub.0 and an optical waveguide to receive a pump optical pulse at .lambda..sub.0 to generate a white pulse having a wavelength spread of .DELTA..lambda.. The optical waveguide is characterized by having dispersion properties such that four-wave mixing light having a wavelength spread of .lambda..sub.0 .+-..DELTA..lambda./2 is produced, and the power gain of the four-wave mixing light is greater than 1. These properties of the waveguide are defined by: the path length of the waveguide device ln value of the dispersion slope to be not more than 16(.vertline..gamma..vertline.E)(.DELTA..lambda..sup. ln G.sub.0) in units wavelength .lambda..sub.0 to be not more than (16/.pi.c) .lambda..sub.0.sup.2 .vertline..gamma..vertline.P/(.DELTA..lambda.).sup.2 super-wideband coherent white light source are demonstrated.

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