Patent ID: 8254418
Filing Date: 2012-08-28
Classification: G11B,H01S

Abstract:
1. A method comprising the following steps: (a) determining if a laser is operating in a single-mode state, the laser having a laser current and an output light having a wavelength; (b) if the laser is determined to not be operating in a single-mode state in step (a), determining the degree to which one of one or more tunable parameters for the laser must be adjusted so that the laser operates in a single-mode state if not operating in a single-mode state, wherein the one or more tunable parameters include the following parameters: the laser current and the wavelength of the output light; (c) adjusting the laser current so that the laser operates in a single-mode state based on the degree to which the laser current must be adjusted as determined in step (b); and (d) determining the current range for an overlapping single-mode plateau for two or more current sweeps for the laser, wherein step (c) comprises setting a current for the laser at approximately the midpoint of the current range for the single-mode plateau.