Optical device with increased spectral width
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United States of America Patent
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May 20, 2003
Grant Date -
N/A
app pub date -
Aug 16, 2000
filing date -
Aug 16, 2000
priority date (Note) -
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Abstract
The invention is an optical apparatus and method of fabrication wherein an optical device such as a semiconductor laser includes a grating and a waveguide optically coupled to the grating. At least a portion of the waveguide coupled to the grating has a width which varies along the length of the waveguide in such a manner as to broaden the spectral line width of light output from the device. The width can be varied according to linear, sinusoidal or saw-tooth functions. A broadened line width permits pumping of a Raman amplifier at a high power without inducing any significant Brillouin Scattering.
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