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Journal of Lightwave Technology

Journal of Lightwave Technology

| A JOINT IEEE/OSA PUBLICATION

  • Vol. 24, Iss. 1 — Jan. 1, 2006
  • pp: 544–

Modeling and Design of GaAs Traveling-Wave Electrooptic Modulators Based on Capacitively Loaded Coplanar Strips

Yansong Cui and Pierre Berini

Journal of Lightwave Technology, Vol. 24, Issue 1, pp. 544- (2006)


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Abstract

GaAs traveling-wave electrooptic (EO) modulators based on capacitively loaded coplanar strips (CPSs) have been extensively modeled, and near-optimal designs are presented. The modulator operates in a push-pull mode, and the electrodes are coupled capacitively in series via the doped under layer. The best design reported herein has asymmetric CPSs 2 cm long and generated a figure of merit of about 9.36 GHz/V. This figure of merit is an improvement by a factor of about 2.5 over the best design reported to date for this modulator architecture. Modulator bandwidths in the range of 40-70 GHz (3 dB electrical) are predicted for various designs; the corresponding optical bandwidths are in the range of 75-110 GHz (3 dB optical).

© 2006 IEEE

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Citation
Yansong Cui and Pierre Berini, "Modeling and Design of GaAs Traveling-Wave Electrooptic Modulators Based on Capacitively Loaded Coplanar Strips," J. Lightwave Technol. 24, 544- (2006)
http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-24-1-544

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