| 摘要 |
The invention provides a method and laser system for switching from a current operating point to a new operating point of the laser, the laser operating at a particular wavelength and includes a source channel and destination channel. The system switches and locks the output wavelength of a laser at ultra fast time scales (<50ns) and compensate for degradation in the laser, and thermal transients in the device during the switching to ensure that within a certain time the laser has switched its wavelength to another wavelength within a specific accuracy and is not dependent on the previous wavelength of the laser.
The system comprises a SG DBR LD (101), a beam splitter (106) directing part of the LD output to a PD with optical filtering means (105), an ADC (110) and a processor (104). The processor (104) is connected to a look-up table (108) and receives the wavelength to be set from an interface (109). LD (101) receives the new current settings via a DAC (102). |
