Patent ID: 11901699
Assignee: SUZHOU INSTITUTE OF NANO-TECH AND NANO-BIONICS (SINANO) , CHINESE ACADEMY OF SCIENCES
Field: Optics (Instruments)
Classification: CPC H  G | IPC G  H

Claim 6:
7. The narrow linewidth laser according to claim 6, wherein the laser is a monolithically integrated configuration, and the first gain region is further provided with a grating structure, wherein the grating structure forms a distributed feedback (DFB) laser or a distributed Bragg (DBR) laser together with the first gain region; the second gain region comprises a semiconductor optical amplifier; the additional PN junction region comprises a semiconductor optical amplifier or a waveguide transparent to a lasing light; the additional MOS junction region comprises a waveguide transparent to the lasing wavelength; a laser configuration comprises a heterogeneously integrated configuration, a butt-joint integrated configuration or a micro-assembled integrated configuration; in all these configurations, the first gain region comprises a semiconductor optical amplifier or the DFB laser or the DBR laser, the second gain region comprises the semiconductor optical amplifier, the additional PN junction region comprises the semiconductor optical amplifier or the waveguide transparent to the lasing light, or the additional MOS junction region is a waveguide transparent to the lasing light.