EXTERNAL CAVITY LASER ASSEMBLY INCLUDING EXTERNAL CHIRPED EXIT REFLECTOR FOR IMPROVED LINEARITY
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United States of America Patent
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Issued Date -
Nov 26, 2009
app pub date -
May 21, 2008
filing date -
May 21, 2008
priority date (Note) -
Abandoned
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Abstract
An external cavity laser assembly includes an external chirped exit reflector configured to reduce changes in reflectivity, thereby improving linearity. The chirped exit reflector may be configured to provide a reflectivity profile with a substantially flat peak portion, for example, as compared to the reflectivity profile of a uniform period fiber Bragg grating. The chirped exit reflector may also be configured such that an optical cavity length of the external cavity laser is shorter for higher wavelengths, thereby reducing wavelength fluctuations and changes in reflectivity caused by wavelength fluctuations.
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