High Time-Resolution 640-Gb/s Clock Recovery Using Time-Domain Optical Fourier Transformation and Narrowband Optical Filter

P. Guan, Hans Christian Hansen Mulvad, K. Kasai, T. Hirooka, M. Nakazawa

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We present a novel scheme for subharmonic clock recovery from an optical time-division-multiplexing signal using time-domain optical Fourier transformation and a narrowband optical filter. High-resolution 640-Gb/s clock recovery is successfully demonstrated with no pattern dependence. The clock recovery is also applied to a 640-Gb/s differential phase-shift-keying transmission, and error-free performance is achieved over 300 km.
Original languageEnglish
JournalI E E E Photonics Technology Letters
Issue number23
Pages (from-to)1735-1737
Publication statusPublished - 2010

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