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Updated: Jul 5, 2026

Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
Effect of fiber-spinning profile on plug-and-play quantum-key distribution systems
Antonio Mecozzi1, Cristian Antonelli, Misha Brodsky
1CNISM and Dipartimento di Ingegneria Elettrica e dell'Informazione, Università dell'Aquila, 67040 L'Aquila, Italy. amecozzi@ing.univaq.it
Abstract:
The spin profile of a fiber is usually optimized to reduce transmission impairments caused by polarization-mode dispersion (PMD). In this paper, we show that fiber-optic-based plug-and-play quantum-key distribution systems using polarization modulation and fibers with a spin profile optimal for PMD may suffer from a large Faraday rotation induced by the geomagnetic field. We show that, for periodic spin patterns of small periods, the Faraday rotation is minimum when no spin is applied to the fiber.
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