Method for tuning emission wavelength of laser device
AssigneeSumitomo Electric Device Innovations, Inc.
InventorsHirokazu TANAKA, Kento KOMATSU
Life of this patent
Estimating the term…
Abstract
A method for tuning an emission wavelength of a laser device, including: acquiring a drive condition of a wavelength tunable laser diode to make the wavelength tunable laser diode oscillate at a wavelength from a memory; driving a first thermo-cooler and a first heater based on the drive condition of the wavelength tunable laser diode; determining whether respective control values of the first thermo-cooler and the first heater are reached within a first range of target values; and driving a gain region after the control values have been reached within the first range.
Claims10
A method for tuning an emission wavelength of a laser device including:
- a wavelength tunable laser diode including a gain region, and a first wavelength selection region integrated with a gain region, and a first heater;
- a first thermo-cooler on which the wavelength tunable laser diode is mounted, the first thermo-cooler being configured to control a temperature of the wavelength tunable laser diode, the method comprising:
- acquiring a drive condition of the wavelength tunable laser diode to make the wavelength tunable laser diode oscillate at a wavelength from a memory;
- driving the first thermo-cooler and the first heater based on the drive condition of the wavelength tunable laser diode;
- determining whether respective control values of the first thermo-cooler and the first heater are reached within a first range of target values;
- and
- driving the gain region after the control values have been reached within the first range.
Dependencies are inferred from the claim text.