Patent ID: 9570885
Date: 2017-02-14
CPC Classifications: H01S,H04B

Claim:
1. A laser, wherein the laser comprises: a laser region and a grating adjustment region; wherein the laser is divided into the laser region and the grating adjustment region by a first electrical isolation layer; the laser region is configured to generate optical signals, wherein the optical signals comprise an optical signal with a wavelength corresponding to a “0” signal and an optical signal with a wavelength corresponding to a “1” signal; and the grating adjustment region is configured to adjust a wavelength of the grating adjustment region by controlling current of the grating adjustment region, so that the optical signal with the wavelength corresponding to the “1” signal of the laser region passes through the grating adjustment region, and the optical signal with the wavelength corresponding to the “0” signal of the laser region returns to the laser region, wherein the grating adjustment region comprises: a grating adjustment region current generating unit and a grating adjustment region optical signal processing unit, wherein: the grating adjustment region current generating unit comprises: a grating adjustment region electrode sub-layer and a first side electrode layer and a second side electrode layer which are disposed at two sides of the grating adjustment region electrode sub-layer; a potential difference between the grating adjustment region electrode sub-layer and the first side electrode layer generates a first current, while a potential difference between the grating adjustment region electrode sub-layer and the second side electrode layer generates a second current; and the grating adjustment region optical signal processing unit comprises: a grating adjustment region grating disposed on an active layer; wherein a central wavelength of the grating adjustment region grating is adjusted by controlling the first current and the second current that pass through the grating adjustment region grating and are generated by the grating adjustment region current generating unit, so that the optical signal with the wavelength corresponding to the “1” signal of the laser region passes through the grating adjustment region grating; and the optical signal with the wavelength corresponding to the “0” signal of the laser region returns to the laser region.