Longitudinal mode stabilized laser
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United States of America Patent
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Feb 25, 1986
Grant Date -
N/A
app pub date -
Sep 13, 1982
filing date -
Sep 13, 1982
priority date (Note) -
Expired
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Abstract
Stabilized, single-mode operation of semiconductor lasers is obtained by introducing longitudinally spaced variations in the effective refractive index along the active waveguiding medium, where said index changes have a spatial period corresponding to many half-wavelengths of the guided optic wave. Because the spatial period of the variations is relatively long, as opposed to half an optical wavelength used in the prior art distributed feedback lasers, a laser in accordance with the invention is much easier to fabricate.
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