Tunable laser and manufacturing method therefor

Details Tunable laser and manufacturing method therefor Tunable laser and manufacturing method therefor

H - Electricity

01

S

H01S 5/06 (2006.01) H01S 5/125 (2006.01)

Patent

CA 2317133

A tunable laser light source, and manufacturing methods therefor, for emitting light over a wide range of wavelengths, with wavelength and intensity stability, that is dimensionally and thermally tolerant. One embodiment configured according to the principles of the invention includes a filter bank, with multiple diverse, independently-transmittable filter elements, which is translatable relative to a light source. Another embodiment employs filter elements having multiple cavities. A further embodiment incorporates into the filter elements temperature insensitive interference films. An embodiment of a method for manufacturing a filter bank according to the principles of the invention involves hybrid integration of individual filter elements, each having different wavelength characteristics. Another embodiment of a manufacturing method involves selective deposition of a Distributed Bragg Reflector (DBR) on a substrate and a cavity on the DBR with a predetermined thickness. The cavity thickness is increased at selected locations to shift the cavity resonance wavelength to desired wavelengths.

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