Low-voltage organic electro-optic modulators using transparent conducting oxides as electrodes

Guoyang Xu, Jing Ma, Zhifu Liu, Boyang Liu, Seng Tiong Ho, Peiwang Zhu, Lian Wang, Yu Yang, Tobin J Marks, Jingdong Luo, Neil Tucker, Alex K Y Jen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we present a novel device structure for organic electro-optic modulators using transparent conducting oxides (TCOs) as electrodes to substantially reduce the switching voltage, and describe their fabrication. We report two different types of device geometry, a top conducting and a side conducting geometry, and discuss their strengths and weaknesses. We discuss how the voltage and speed performance of such modulators are dependant on the conductivity/optical loss ratio of the TCO electrodes. Our device simulation shows that by appropriately engineering the high TCO conductivity/optical loss ratio, 4-6x lower switching voltage can be achieved while still maintaining high modulation frequencies and low optical loss. We show that certain new TCO materials are capable of achieving the high conductivity/optical loss required for efficient modulation in the 1300-1550 nm wavelength range. We summarize the optical loss characteristics at 1300 nm of different types of thin-film TCO materials grown using different deposition techniques. TCO electrodes based on different types of materials, such as In2O3, ZnO, and ITO have been investigated for our device structures. Fabrication issues associated with the deposition of TCO electrodes directly on organic EO materials and our approach to addressing them are discussed. Initial results for organic EO modulators fabricated with TCOs as electrodes are presented, and the performance of these modulators are compared with theoretical modeling results. The new device structures presented here will enable next generation low-voltage organic EO modulators targeting RF photonics applications.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsM. Eich
Pages1-9
Number of pages9
Volume5935
DOIs
Publication statusPublished - 2005
EventLinear and Nonlinear Optics of Organic Materials V - San Diego, CA, United States
Duration: Aug 2 2005Aug 4 2005

Other

OtherLinear and Nonlinear Optics of Organic Materials V
CountryUnited States
CitySan Diego, CA
Period8/2/058/4/05

Fingerprint

Electrooptical effects
low voltage
Modulators
electro-optics
modulators
Optical losses
conduction
Electrodes
Oxides
electrodes
oxides
Electric potential
conductivity
Fabrication
electric potential
Geometry
Frequency modulation
fabrication
Photonics
organic materials

Keywords

  • Electro-optic (EO) material
  • EO modulator
  • Poled polymer
  • Transparent Conducting Oxide

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Xu, G., Ma, J., Liu, Z., Liu, B., Ho, S. T., Zhu, P., ... Jen, A. K. Y. (2005). Low-voltage organic electro-optic modulators using transparent conducting oxides as electrodes. In M. Eich (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 5935, pp. 1-9). [59350Y] https://doi.org/10.1117/12.620652

Low-voltage organic electro-optic modulators using transparent conducting oxides as electrodes. / Xu, Guoyang; Ma, Jing; Liu, Zhifu; Liu, Boyang; Ho, Seng Tiong; Zhu, Peiwang; Wang, Lian; Yang, Yu; Marks, Tobin J; Luo, Jingdong; Tucker, Neil; Jen, Alex K Y.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / M. Eich. Vol. 5935 2005. p. 1-9 59350Y.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Xu, G, Ma, J, Liu, Z, Liu, B, Ho, ST, Zhu, P, Wang, L, Yang, Y, Marks, TJ, Luo, J, Tucker, N & Jen, AKY 2005, Low-voltage organic electro-optic modulators using transparent conducting oxides as electrodes. in M Eich (ed.), Proceedings of SPIE - The International Society for Optical Engineering. vol. 5935, 59350Y, pp. 1-9, Linear and Nonlinear Optics of Organic Materials V, San Diego, CA, United States, 8/2/05. https://doi.org/10.1117/12.620652
Xu G, Ma J, Liu Z, Liu B, Ho ST, Zhu P et al. Low-voltage organic electro-optic modulators using transparent conducting oxides as electrodes. In Eich M, editor, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 5935. 2005. p. 1-9. 59350Y https://doi.org/10.1117/12.620652
Xu, Guoyang ; Ma, Jing ; Liu, Zhifu ; Liu, Boyang ; Ho, Seng Tiong ; Zhu, Peiwang ; Wang, Lian ; Yang, Yu ; Marks, Tobin J ; Luo, Jingdong ; Tucker, Neil ; Jen, Alex K Y. / Low-voltage organic electro-optic modulators using transparent conducting oxides as electrodes. Proceedings of SPIE - The International Society for Optical Engineering. editor / M. Eich. Vol. 5935 2005. pp. 1-9
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