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We have fabricated a compact 224-Gb/s dual-polarization 16-ary quadrature amplitude modulation (DP-16QAM) modulator module consisting of InP-based Mach-Zehnder modulators (MZMs), linear driver ICs and polarization multiplexing micro-optics. We have demonstrated a very low power dissipation of 3.2 W with comparable performance to LiNbO3-based modulator in back-to-back operation.
We developed 1.3µm, EML module built in linear EAM driver IC for 28-Gbaud 4-PAM 56-Gbit/s operation. Optical transmission performance under fiber dispersion range from-73-ps/nm to +39-ps/nm intended for 8-lane LAN-WDM system is demonstrated.
We developed 1.3μm, EML module built in EML driver IC for both 50 and 56Gbit/s. 40-km SMF transmission with clear eye openings under 56Gbit/s operation were demonstrated for the first time.
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