TiO2 ring-resonator-based EO polymer modulator

Feng Qiu, Andrew M. Spring, Daisuke Maeda, Masa Aki Ozawa, Keisuke Odoi, Isao Aoki, Akira Otomo, Shiyoshi Yokoyama

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


In this work, an electro-optic (EO) ring resonator modulator was designed and fabricated in a waveguide consisting of a titanium dioxide (TiO2) core, silicon dioxide (SiO2) buffer layer, EO polymer claddings, and electrodes. By optimizing the thickness of the TiO2 and SiO2 layers, the modulator could satisfy the single-mode requirement; furthermore 52.5% TM mode was confined in the active EO polymer layers. The designed modulator could also pole the EO polymer effectively regardless of its resistivity. Therefore, the EO modulator was observed to show a high resonance wavelength shift of 2.25 × 10-2 nm/V. The intensity modulation at 1550 nm showed a Vp-p = 1.9 V for a 3dB distinction ratio.

Original languageEnglish
Pages (from-to)14101-14107
Number of pages7
JournalOptics Express
Issue number12
Publication statusPublished - Jun 16 2014

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


Dive into the research topics of 'TiO2 ring-resonator-based EO polymer modulator'. Together they form a unique fingerprint.

Cite this