Abstract

We investigate the potential performance of polymer-based electro-optic (EO) modulators for high-speed systems at 40Gb/s and beyond. General strategies and specific designs are presented to reduce the modulator half-wave drive voltage while maintaining a broadband response. In addition, we consider practical system requirements that may allow the relaxation of certain modulator design parameters to further improve performance. Designs are presented that may enable a 3-dB electrical bandwidth of 30GHz with a single-ended half-wave drive voltage of ∼ 1.6 V for 1.3-µm light assuming an effective EO coefficient of 30 pm/V in the waveguide core.

[IEEE ]

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J. Lightwave Technol. (4)

S. J. Chang, C. L. Tsai, Y. B. Lin, J. F. Liu and W. S. Wang, "Improved electro-optic modulator with ridge structure in X-cut LiNbO3", J. Lightwave Technol., vol. 17, pp. 843-847, 1999.

G. P. Gopalakrishnan, W. K. Burns, R. W. McElhanon, C. H. Bulmer and A. S. Greenblatt, "Performance and modeling of broadband LiNbO 3 traveling wave optical intensity modulators", J. Lightwave Technol., vol. 12, pp. 1807-1819, 1994.

K. Noguchi, O. Mitomi, H. Miyazawa and S. Seki, "A broadband Ti: LiNbO 3 optical modulator with a ridge structure", J. Lightwave Technol., vol. 13, pp. 1164-1168, 1995.

W. K. Burns, M. M. Howerton, R. P. Moeller, R. Krahenbuhl, R. W. McElhanon and A. S. Greenblatt, "Low drive voltage, broad-band LiNbO3 modulators with and without etched ridges", J. Lightwave Technol., vol. 17, pp. 2551-2555, 1999.

Opt. Lett. (1)

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