Organic electro-optic modulator using transparent conducting oxides as electrodes

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

Research output: Contribution to journalArticlepeer-review

71 Citations (Scopus)


A novel organic electro-optic (EO) modulator using transparent conducting oxides (ZnO and In2O3) as electrodes is demonstrated for the first time. The modulator employs the poled guest-host chromophore/polymer material AJL8/APC having r33=35pm/V and is able to achieve a low Vπ=2.8 V switching voltage for an 8mm-long device at a wavelength of 1.31μm. This corresponds to a Vπ=1.1 V switching voltage for a 1cm-long device in a push-pull configuration. The push-pull V πL figure of merit normalized for the EO coefficient is thus 1.1V-cm/(35 pm/V), which is 3-4x lower than that can be achieved with a convetional modulator structure. The bottom electrode is ZnO grown by Metal-Organic Vapor Deposition (MOCVD) and top electrode In2O 3 deposited using ion-beam assisted deposition. The top electrode is directly deposited on the guest-host organic material. The design and fabrication considerations for the modulator are also discussed.

Original languageEnglish
Pages (from-to)7380-7385
Number of pages6
JournalOptics express
Issue number19
Publication statusPublished - Sep 19 2005

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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