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US 6,959,028 B2Granted
External cavity, widely tunable lasers and methods of tuning the same
AssigneeIntel Corporation
InventorRichard Jones
Life of this patent
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Abstract
External cavity, widely tunable lasers and methods of tuning the same are disclosed. One such example laser includes a semiconductor laser, a ring resonator coupled to the semiconductor laser; and a Bragg grating. The Bragg grating is coupled to the ring resonator to reflect a portion of light output by the ring resonator back to the semiconductor laser to select a lasing frequency of the semiconductor laser.
Claims14
A tunable laser comprising;
- a semiconductor laser located on a first substrate;
- a ring resonator coupled to the semiconductor laser;
- a Bragg grating coupled to the ring resonator to reflect a portion of light output by the ring resonator bark to the semiconductor laser to select a lasing frequency of the semiconductor laser, and
- a phase changing device to selectively change a phase of an output of the semiconductor laser, wherein the ring resonator, the Bragg grating, and the phase changing device are located on a second substrate separate from the first substrate.
1 more element
Dependencies are inferred from the claim text.