Journal
OPTICS EXPRESS
Volume 21, Issue 17, Pages 19593-19607Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.21.019593
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Funding
- European Research Council (ERC) under the project Frontiers of Integrated Silicon Nanophotonics in Telecommunications [279770]
- European Union's Seventh Framework Programme (CIG) [293767]
- German Ministry for Research and Education (BMBF) under the CELTIC + project Safe and Secure European Router (SASER) [16BP12504]
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We have investigated two novel concepts for the design of transmission lines in travelling wave Mach-Zehnder interferometer based Silicon Photonics depletion modulators overcoming the analog bandwidth limitations arising from cross-talk between signal lines in push-pull modulators and reducing the linear losses of the transmission lines. We experimentally validate the concepts and demonstrate an E/O -3 dBe bandwidth of 16 GHz with a 4V drive voltage (in dual drive configuration) and 8.8 dB on-chip insertion losses. Significant bandwidth improvements result from suppression of cross-talk. An additional bandwidth enhancement of similar to 11% results from a reduction of resistive transmission line losses. Frequency dependent loss models for loaded transmission lines and E/O bandwidth modeling are fully verified. (C) 2013 Optical Society of America
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