Intra-Cavity Phase Modulated Laser Based on Intra-Cavity Depletion-Edge-Translation Lightwave Modulators
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United States of America Patent
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Issued Date -
Oct 29, 2009
app pub date -
Apr 28, 2008
filing date -
Apr 28, 2008
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Abandoned
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Abstract
Use of depletion edge translation as an in cavity phase modulation mechanism in lasers. Aspects of the invention are especially relevant (without limitation) in transmitters for extended reach comprising an intra cavity phase and amplitude modulated laser for generation of a frequency modulated signal and a passive optical spectrum reshaper element, sometimes referred to as a chirp modulated laser. Such techniques may be carried out as disclose herein by adopting predetermined doping profiles and applying predetermined voltage to the laser cavity, and more preferably to a phase section in or adjoining the laser cavity.
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