Method and system for turning on an optical radiation source
AssigneeAgilent Technologies, Inc.
InventorsRoberto Lano, Eduardo Augusto Miranda Sologuren
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Abstract
An optical communication module includes an optical radiation source as well as control circuitry to control the temperature and the power emitted by the optical source. In order to permit soft start-up of the source while avoiding undesired wavelength variations, the optical source is pre-heated before being caused to emit optical radiation. This may be effected by initially heating the optical source to an initial temperature using the thermoelectrical conditioner associated therewith as a heater and subsequently causing a partly under-threshold current to flow through the source, thus causing the source to be heated while still emitting negligible optical power.
Claims45
A method for turning on an optical radiation source, said optical source having associated therewith control circuitry to control the temperature of said optical source, the method comprising pre-heating said optical source before said optical source is caused to emit optical radiation.
A system comprising:
- an optical radiation source;
- and
- control circuitry to control the temperature of said optical source, wherein said circuitry includes heating means for pre-heating said optical source before said optical source is caused to emit optical radiation.
Dependencies are inferred from the claim text.