Title :
Chirp Characteristics of Silicon Mach–Zehnder Modulator Under Small-Signal Modulation
Author :
Wei, Yuxin ; Zhao, Yong ; Yang, Jianyi ; Wang, Minghua ; Jiang, Xiaoqing
Author_Institution :
Dept. of Inf. Sci. & Electron. Eng., Zhejiang Univ., Hangzhou, China
fDate :
4/1/2011 12:00:00 AM
Abstract :
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.
Keywords :
MIS structures; Mach-Zehnder interferometers; chirp modulation; elemental semiconductors; integrated optics; optical modulation; p-i-n diodes; p-n junctions; silicon; Al-SiO2-Si; amplitude; carrier absorption effect; chirp characteristics; forward-biased p-i-n structures; frequency 10 GHz; p-n depletion mode structure; push-pull configuration; reverse-biased p-n structures; silicon Mach-Zehnder interferometer modulator; sinusoidal modulating signals; small-signal modulation; small-signal simulation; Absorption; Chirp; Frequency modulation; P-i-n diodes; Phase modulation; Silicon; Chirp parameter; Mach–Zehnder interferometer (MZI) modulators; integrated optics devices; waveguide modulators;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2011.2111413
