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Opt Express. 2012 Dec 10;20(26):B350-6. doi: 10.1364/OE.20.00B350.

11-Gb/s 80-km transmission performance of zero-chirp silicon Mach-Zehnder modulator.

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  • 1Optics and Electronics Laboratory, Fujikura Limited, 1440 Mutsuzaki, Sakura, Chiba 285-8550, Japan. kazuhiro.goi@jp.fujikura.com


The 11-Gbps 80-km transmission performance of a zero-chirp silicon Mach-Zehnder modulator has been characterized. The zero-chirp characteristic of the silicon modulator is confirmed in the constellation measurement, and gives high tolerance both for positive and negative chromatic dispersion. A low-dispersion-penalty transmission up to 80 km using the 11-Gbps non return-to-zero on-off-keying format is confirmed via bit-error-rate measurements with a performance comparable to that of a commercial lithium-niobate modulator. The dispersion tolerance at 2-dB power penalty for a bit-error-rate of 10(-3) is more than ± 950 ps/nm. Further, 22.3-Gbps binary phase-shift-keying is demonstrated, and the back-to-back power penalty with respect to the lithium-niobate modulator is less than 0.5 dB.

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