Use of indium tin oxide poling electrodes for improved performance of nonlinear polymer-based optoelectronic devices

Robert L. Nelson; James G. Grote; Jeremy B. Huddleston; John S. Zetts; Frank Kenneth Hopkins

doi:10.1117/12.426902

16 May 2001 Use of indium tin oxide poling electrodes for improved performance of nonlinear polymer-based optoelectronic devices

Robert L. Nelson, James G. Grote, Jeremy B. Huddleston, John S. Zetts, Frank Kenneth Hopkins

Author Affiliations +

Proceedings Volume 4290, Optoelectronic Integrated Circuits and Packaging V; (2001) https://doi.org/10.1117/12.426902
Event: Symposium on Integrated Optics, 2001, San Jose, CA, United States

Abstract

Electro-optic (EO) polymer modulators have demonstrated a high frequency response (>50 GHz) and therefore hold promise to become the preferred solution for high-speed data transmission. Typically the modulation is achieved via a Mach-Zehnder waveguide configuration with the active polymer sandwiched between two passive cladding layers. This arrangement has been shown to not be optimal in regard to the efficiency for conversion of RF to optical signal. The cladding layers present an unwanted electrical load when either electric field poling or modulation of the active core polymer is desired. We propose the use of thin layers of Indium Tin Oxide (ITO) deposited on either side of the core to enable direct and highly efficient poling of the central active region while maintaining acceptable optical losses in the waveguide geometry. Presented are the results of poling studies which indicate that out RF sputtered ITO is a viable electrode poling material, while the results of spectrophotometric and ellipsometric results indicate that the optical loss coefficient is within a range that should allow for acceptable use in the proposed geometry. This approach would eliminate the need for conductive claddings that also increase the device poling efficiency.

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Robert L. Nelson, James G. Grote, Jeremy B. Huddleston, John S. Zetts, and Frank Kenneth Hopkins "Use of indium tin oxide poling electrodes for improved performance of nonlinear polymer-based optoelectronic devices", Proc. SPIE 4290, Optoelectronic Integrated Circuits and Packaging V, (16 May 2001); https://doi.org/10.1117/12.426902

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