Vitara-CEP consists of CEP actuators incorporated in the Vitara-T, a quasi-collinear f-to-2f interferometer and a wide bandwidth electronics feedback loop. The interferometer uses a photonic crystal fiber to generate an octave-scanning optical spectrum. The red end of this spectrum is frequency-doubled and combined with the green end of this same broad spectrum. A fast photodetector senses the resultant beat frequency and after suitable processing, this signal is used to control the fast and slow actuators inside the Vitara-T, thereby controlling the carrier phase.
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