TUNABLE LASER MODULE BASED ON POLYMER WAVEGUIDES
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United States of America Patent
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Issued Date -
Aug 19, 2010
app pub date -
Jul 25, 2008
filing date -
Jul 27, 2007
priority date (Note) -
Abandoned
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Abstract
The present invention relates to a laser module based on a waveguide tunable in a broad wavelength band. More specifically, the laser module comprises: a broadband light source based on an external resonator that generates optical signals; a waveguide; at least one Bragg grating formed on the waveguide; an optical lens provided between the light source and the waveguide; a first temperature controlling device configured of a thin film heater; and a second temperature controlling device that includes a temperature sensor and a thermoelectric cooler, wherein the light output from the light source being condensed through the optical lens and input to the waveguide, and a reflecting band of the Bragg grating is controlled by a thermo-optic effect, and an oscillation wavelength is controlled by a second temperature controlling device independently of external temperature environment.
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