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High-speed optical FSK modulator for optical packet labeling

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7 Author(s)
T. Kawanishi ; Nat. Inst. of Inf. & Commun. Technol., Tokyo, Japan ; K. Higuma ; T. Fujita ; J. Ichikawa
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We described a novel optical label swapping (OLS) technique for optical packet systems using frequency-shift-keying (FSK) optical labeling. High-speed optical FSK signal can be generated by using an external FSK modulator consisting of four optical phase modulators. The FSK modulator was based on optical single-sideband (SSB) modulation technique, and comprised of traveling-wave electrodes for high-speed frequency switching. We demonstrate 10 Gbps FSK transmission, and simultaneous modulation by FSK and intensity modulation (IM). OLS using double-sideband modulation was also demonstrated, where this technique can be used for a bundled wavelength-domain-multiplexing (WDM) channels without using an array of pumping light sources.

Published in:

Journal of Lightwave Technology  (Volume:23 ,  Issue: 1 )