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Design and fabrication of segmented, slotted waveguides for electro-optic modulation

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4 Author(s)
Wang, Guangxi ; Department of Electrical Engineering, California Institute of Technology, 1200 E California Blvd., Pasadena, California 91125, USA ; Baehr-Jones, T. ; Hochberg, M. ; Scherer, Axel

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Recently, slotted waveguides have been used in conjunction with second order nonlinear optical polymers to provide a platform for electro-optic modulation at telecommunication frequencies. A challenge with these devices is the need to provide high-frequency electrical driving signals to the slots. The silicon resistivity must be high to reduce optical loss, and as a result electrical performance can be severely limited. We have designed and fabricated a class of waveguide that achieves quasicontinuous electrical contact with subwavelength segmentations and has low optical losses of 4 dB/cm, allowing both millimeter-wave and optical fields to be concentrated in the same area.

Published in:

Applied Physics Letters  (Volume:91 ,  Issue: 14 )

Date of Publication:

Oct 2007

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