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Proceedings Paper

A Modified 1x2 Directional Coupler Modulator With Low Drive Voltage
Author(s): Suwat Thaniyavarn
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Paper Abstract

A novel modified electro-optic Ti:LiNb01 lx2 directional coupler modulator is demonstrated. The modulator consists of a single-mode input waveguide which branches into a pair of optically coupled single-mode waveguides. Due to the symmetry of the modulator configuration, the half-power 3-dB operating point is automatically achieved without the need for a DC bias voltage. It is compatible with an efficient push-pull traveling wave type electrode structure for ultra high speed operation, utilizing the largest r33 electro-optic coefficient. In addition, the device can be used as a lx2 optical switch, requiring a lower drive voltage than a conventional directional coupler switch.

Paper Details

Date Published: 23 February 1987
PDF: 5 pages
Proc. SPIE 0716, High Frequency Optical Communications, (23 February 1987); doi: 10.1117/12.937439
Show Author Affiliations
Suwat Thaniyavarn, TRW, Electro-Optics Research Center (United States)

Published in SPIE Proceedings Vol. 0716:
High Frequency Optical Communications
O. Glenn Ramer; Paul Sierak, Editor(s)

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