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Optical Engineering

Directional-coupler-based Mach-Zehnder interferometer in silicon-on-insulator technology for optical intensity modulation
Author(s): Fei Sun; Jinzhong Yu; Shaowu Chen
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Paper Abstract

Based on silicon-on-insulator (SOI) technology, a Mach-Zehnder interferometer (MZI) is fabricated, in which two directional couplers serve as power splitter and combiner. The free carrier plasma dispersion effect of Si is adopted to achieve the phase modulation and the consequent intensity modulation of optical fields. The device presents an insertion loss of 2.61 dB and an extinction ratio of 19.6 dB. The rise time and fall time are 676 ns and 552 ns, respectively. Detailed analysis and explanation of the performance behaviors are also presented.

Paper Details

Date Published: 1 February 2007
PDF: 5 pages
Opt. Eng. 46(2) 025601 doi: 10.1117/1.2436868
Published in: Optical Engineering Volume 46, Issue 2
Show Author Affiliations
Fei Sun, Institute of Semiconductors (China)
Jinzhong Yu, Institute of Semiconductors (China)
Shaowu Chen, Institute of Semiconductors (China)

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