Laser that can be tuned quickly over a wide band
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United States of America Patent
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Nov 23, 2004
Grant Date -
Aug 29, 2002
app pub date -
Feb 22, 2002
filing date -
Feb 23, 2001
priority date (Note) -
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Abstract
A wavelength-tunable laser consists of a resonant semiconductor cavity coupled to a sampled Bragg reflector grating having reflectivity peaks for N optical frequencies. The resonant cavity is formed of two opposite reflector members that are not wavelength selective and delimit an amplifier section coupled to a phase tuning section. The optical length of the cavity is adjustable electro-optically as a function of a control voltage applied to it. The laser can be tuned quickly over a wide band.
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