APPARATUS OF GENERATING WAVELENGTH TUNABLE LASER

摘要

The present invention relates to an apparatus for generating wavelength-tunable light, comprising: a wavelength-tunable light generating part for emitting wavelength-tunable light which is emitted with a wavelength capable of temporally varying depending on the change of a driving signal; a first optical splitter for receiving light generated by the wavelength-tunable light generating part and branching and outputting the light through a monitoring output terminal and a main output terminal; a gas cell having a housing filled with filling gas to receive the light output through the monitoring output terminal and output absorptive output light corresponding to the absorptive wavelength of the filling gas; a first light detector for detecting light having gone through the gas cell; and an adjustment part for determining whether or not the current wavelength generated by the wavelength-tunable light generating part differs from a target wavelength, from a signal output from the first light detector so that the target wavelength in a set band can be emitted in identical patterns by set periods, and controlling the wavelength-tunable light generating part while adjusting the driving pattern of the wavelength-tunable light generating part to be compensated for if there is a difference, wherein the wavelength-tunable light generating part can identically maintain the generation pattern of wavelength-tunable light by correcting the wavelength shift of the wavelength-tunable light in real time.