Patent ID: 9735541
Date: 2017-08-15
CPC Classifications: H01S

Claim:
1. A method of calibrating a tunable laser, the method comprising: shifting a filter output peak defined by a tunable optical feedback filter of the tunable laser in an optical spectral domain to align with a target etalon output peak of a plurality of spaced etalon output peaks defined by an etalon of the tunable laser, shifting a cavity frequency grid defined by cavity modes of the tunable laser to align a target cavity mode of the cavity frequency grid with the filter output peak, the cavity modes defined by a total optical path length inside a resonant cavity of the tunable laser; shifting the spaced etalon output peaks defined by the etalon to align the target etalon output peak with a target wavelength of an output wavelength grid; and modifying a bias current and a modulation current of a gain section of the tunable laser to achieve a defined output modulation amplitude and a defined extinction ratio.