Raman optical amplifier with fabry-perot pump laser

A computing system comprising:

• one or more processors;
• and
• one or more computer-readable storage media configured to store instructions that, in response to being executed by the one or more processors, cause the system to perform operations, the operations comprising:
• providing a fixed input current to a temperature and current dependent pump laser of an optical pumping block, the fixed input current corresponding to a maximum current of the pump laser;
• providing a first tuning temperature to the pump laser while providing the fixed input current, the first tuning temperature being based on a target band of a pumping beam and the first tuning temperature causing the pump laser to generate a light beam having a first frequency band that includes a first center frequency and a first bandwidth in which the first frequency band is dictated by the first tuning temperature and the fixed input current;
• and
• providing a second tuning temperature to a temperature dependent optical reflector configured to receive the light beam generated by the pump laser, the second tuning temperature being based on the target band of the pumping beam and the second tuning temperature causing the optical reflector to reflect light of the light beam that is within a second frequency band that corresponds to the target band in which the second frequency band reflected by the optical reflector is dictated by the second tuning temperature, wherein the reflected light beam is emitted, as the pumping beam, by the optical pumping block into a transmission optical medium configured to carry an optical signal.

A method comprising:

• providing a fixed input current to a temperature and current dependent pump laser of an optical pumping block, the fixed input current being maintained during active operation of the pump laser;
• providing a first tuning temperature to the pump laser while providing the fixed input current, the first tuning temperature being based on a target band of a pumping beam and the first tuning temperature causing the pump laser to generate a light beam having a first frequency band that includes a first center frequency and a first bandwidth in which the first frequency band is dictated by the first tuning temperature and the fixed input current;
• providing a second tuning temperature to a temperature dependent optical reflector configured to receive the light beam generated by the pump laser, the second tuning temperature being based on the target band of the pumping beam and the second tuning temperature causing the optical reflector to reflect light of the light beam that is within a second frequency band that corresponds to the target band in which the second frequency band reflected by the optical reflector is dictated by the second tuning temperature;
• and
• emitting, as the pumping beam, the reflected light beam into a transmission optical medium configured to carry an optical signal.