| 摘要 |
An optical source is described. This optical source includes a semiconductor optical amplifier, with a semiconductor other than silicon, which provides an optical gain medium. In addition, a photonic chip, optically coupled to the semiconductor optical amplifier, includes: a first optical waveguide that conveys at least a portion of the optical signal, and a second optical waveguide that conveys at least another portion of the optical signal. Moreover, the photonic chip includes a distributed-Bragg-reflector (DBR) ring resonator that is optically coupled to the first optical waveguide and the second optical waveguide, and that reflects a tunable wavelength in the optical signal. Furthermore, a monitor on the photonic chip measures at least the other portion of the optical signal, and control logic on the photonic chip thermally tunes the tunable wavelength of the DBR ring resonator based on the measurement of at least the other portion of the optical signal. |
| 主权项 |
1. An optical source, comprising:
a semiconductor optical amplifier, defined in a semiconductor other than silicon, having a first edge and a second edge, wherein the semiconductor optical amplifier includes a reflective coating on the first edge, and wherein, during operation, the semiconductor optical amplifier provides an optical signal at the second edge; and a photonic chip optically coupled to the semiconductor optical amplifier, wherein the photonic chip includes:
a first optical waveguide having a first end optically coupled to the second edge of the semiconductor optical amplifier and a second end that, during operation, outputs at least a portion of the optical signal, wherein, during operation, the first optical waveguide conveys at least the portion of the optical signal;a second optical waveguide, having a third end and a fourth end, wherein, during operation, the second optical waveguide conveys at least another portion of the optical signal;a distributed-Bragg-reflector (DBR) ring resonator, optically coupled to the first optical waveguide and the second optical waveguide, that, during operation, reflects a tunable wavelength in the optical signal;a thermal-tuning mechanism thermally coupled to the DBR ring resonator;a monitor, optically coupled to the fourth end of the second optical waveguide, that, during operation, measures at least the other portion of the optical signal; andcontrol logic, electrically coupled to the thermal-tuning mechanism, that, during operation, thermally tunes the tunable wavelength of the DBR ring resonator based on the measurement of at least the other portion of the optical signal. |
