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Two-mode injection-locked FP laser receiver: a regenerator for long-distance stable fiber delivery of radio-frequency standards

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Abstract

We propose and experimentally validate a new cost-effective optical receiver–regenerator scheme for long-distance microwave-frequency standard dissemination, based on the properties of dual-wavelength injection locked Fabry–Perot (FP) lasers. The regenerator FP laser is injection locked to one of its longitudinal modes by the incoming intensity-modulated light carrying the microwave-frequency standard. The light of a local CW laser is also injected in the regenerator FP, locking it to an adjacent mode. The dual-injection locked laser reproduces the sinusoidal microwave-frequency standard on both wavelengths. The regenerated original signal is transmitted to the next node, whilst the local wavelength is fed back to the previous node for phase error extraction and link compensation. The performance of the proposed regenerator is demonstrated with Allan deviation and phase-noise measurements.

© 2015 Optical Society of America

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