Low (Sub-1-Volt) Halfwave Voltage Polymeric Electro-optic Modulators Achieved by Controlling Chromophore Shape-Reference-Cited by-同舟云学术

Low (Sub-1-Volt) Halfwave Voltage Polymeric Electro-optic Modulators Achieved by Controlling Chromophore Shape

Published:2000-04-07 Issue:5463 Volume:288 Page:119-122
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Shi Yongqiang¹,Zhang Cheng²,Zhang Hua³,Bechtel James H.¹,Dalton Larry R.²⁴,Robinson Bruce H.⁴,Steier William H.³

Affiliation:

1. TACAN Corporation, 2330 Faraday Avenue, Carlsbad, CA 92008, USA.

2. Loker Hydrocarbon Research Institute and Department of Chemistry, University of Southern California, Los Angeles, CA 90089, USA.

3. Center for Photonic Technologies, Department of Electrical Engineering, University of Southern California, Los Angeles, CA 90089, USA.

4. Department of Chemistry, University of Washington, Seattle, WA 98195, USA.

Abstract

Electro-optic (EO) modulators encode electrical signals onto fiber optic transmissions. High drive voltages limit gain and noise levels. Typical polymeric and lithium niobate modulators operate with halfwave voltages of 5 volts. Sterically modified organic chromophores have been used to reduce the attenuation of electric field poling–induced electro-optic activity caused by strong intermolecular electrostatic interactions. Such modified chromophores, incorporated into polymer hosts, were used to fabricate EO modulators with halfwave voltages of 0.8 volts (at a telecommunications wavelength of 1318 nanometers) and to achieve a halfwave voltage-interaction length product of 2.2 volt-centimeters. Optical push-pull poling and driving were also used to reduce halfwave voltage. This study, together with recent demonstrations of exceptional bandwidths (more than 110 gigahertz) and ease of integration (with very large scale integration semiconductor circuitry and ultra-low-loss passive optical circuitry) demonstrates the potential of polymeric materials for next generation telecommunications, information processing, and radio frequency distribution.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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