Journal
OPTICS EXPRESS
Volume 20, Issue 3, Pages 2911-2923Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.20.002911
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- Japan Society for the Promotion of Science (JSPS)
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We present high-speed operation of pin-diode-based silicon Mach-Zehnder modulators that have side-wall gratings on both sides of the waveguide core. The use of pre-emphasis signals generated with a finite impulse response digital filter was examined in the frequency domain to show how the filter works for different filter parameter sets. In large signal modulation experiments, V pi L as low as 0.29 V.cm was obtained at 12.5 Gb/s using a fabricated modulator and the pre-emphasis technique. Operation of up to 25-Gb/s is possible using basically the same driving configurations. (C) 2012 Optical Society of America
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