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US 12,095,228 B2Granted
Tunable laser with active material on at least one end for monitoring performance
AssigneeFreedom Photonics LLC
InventorGordon Barbour Morrison
Life of this patent
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Abstract
A laser comprising a laser cavity formed by a first optical reflector, a gain region, a second optical reflector having a plurality of reflection peaks, and at least one optically active region. The first mirror may be a DBR or comb mirror and the second mirror may be a comb mirror. The spectral reflectance of the second optical reflector is adjusted at least partially based on an electric signal received form the optically active region such that only one reflection peak is aligned with a cavity mode formed by the first and second reflector.
Claims15
A laser comprising:
- at least one gain region including a gain configured to generate light;
- a first optical reflector at one end of the gain region, the first optical reflector having at least one reflectance peak in a gain bandwidth of the gain region;
- a second optical reflector having a plurality of reflection peaks at another end of the gain region, the first optical reflector and the second optical reflector forming a cavity including the gain region therein, the cavity having a plurality of cavity modes spaced apart from each other;
- at least one temperature controller configured to adjust the temperature of at least said second optical reflector;
- and
- electronics configured to adjust the temperature of the at least one temperature controller thereby shifting a reflection peak of the second optical reflector with respect to a cavity mode of the plurality of cavity modes;
- said electronics configured to adjust the temperature of the at least one temperature controller based on a measured voltage from said gain region.
4 more elements
Dependencies are inferred from the claim text.