Journal
JOURNAL OF LIGHTWAVE TECHNOLOGY
Volume 29, Issue 7, Pages 1011-1017Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JLT.2011.2111413
Keywords
Chirp parameter; integrated optics devices; Mach-Zehnder interferometer (MZI) modulators; waveguide modulators
Funding
- Natural Basic Research Program of China [2007CB613405]
- Natural Science Foundation of China [60777015]
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Chirp characteristics of Silicon Mach-Zehnder Interferometer (MZI) modulators with forward-biased p-i-n and reverse-biased p-n structures are investigated by performing small-signal simulation, respectively. Simulation result shows that the chirp parameter is negative and influenced by the carrier absorption effect, the amplitude, and the frequency of applied sinusoidal modulating signals. Chirp performance at 10 GHz modulation frequency can be obtained by utilizing p-n depletion mode structure. Finally, a way to further lower the absolute value of the chirp parameter is provided by operating the MZI in a push-pull configuration.
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