Patent ID: 9372339
Filing Date: 2016-06-21
CPC Classification: G02B,H01S

Claim Text:
1. A wavelength swept light source in which an output wavelength temporally and periodically varies, comprising: an oscillator part comprising: a controlled voltage generator part configured to generate a control signal to provide to the electro-optic deflector, the control signal being a controlled voltage comprised of a sawtooth waveform having superimposed thereon an exponential component of the sawtooth waveform according to an equation:  where wherein the electro-optic deflector is configured such that when the control signal is applied to the electro-optic deflector, an electric field is generated that causes charges to be injected into the electro-optic crystal so that a gradient of a refractive index of the electro-optic deflector is evoked due to a non-uniform electric field distribution attributed to the charge distribution of the electro-optic crystal, the gradient of the refractive index of the electro-optic deflector causing a light ray path through the electro-optic deflector to be bent perpendicular to the gradient.