5 February 2013 Impact of modulator chirp in 100 Gbps class optical discrete multi-tone transmission system
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Abstract
Discrete multi-tone (DMT) technology is an attractive modulation technique for short reach optical transmission system. One of the main factors that limit the performance of the 1.5-m band DMT system is the interplay between the chromatic dispersion of the transmission fiber and the chirp characteristic of the transmitter. We experimentally measured and compared the chirp characteristics of various modulator configurations, which are lithium-niobate Mach-Zehnder modulator, directly modulated laser, and electro-absorption modulator, by the frequency discriminator method using MZ interferometer. We also measured and compared the transmission characteristics of the transmitters using above-mentioned modulators and discuss the suitable transmitter configuration for DMT technology.
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Masato Nishihara, Masato Nishihara, Toshiki Tanaka, Toshiki Tanaka, Tomoo Takahara, Tomoo Takahara, Lei Li, Lei Li, Zhenning Tao, Zhenning Tao, Jens C. Rasmussen, Jens C. Rasmussen, "Impact of modulator chirp in 100 Gbps class optical discrete multi-tone transmission system", Proc. SPIE 8646, Optical Metro Networks and Short-Haul Systems V, 86460N (5 February 2013); doi: 10.1117/12.2003713; https://doi.org/10.1117/12.2003713
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