Guided-Wave Electro-Optic Modulators Using Novel Electrode Structure of Coupled Microstrip Line Resonator

• ENOKIHARA Akira

  Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd.

• YAJIMA Hiroyoshi

  Advanced Technology Research Laboratories, Matsushita Electric Industrial Co., Ltd.

• MURATA Hiroshi

  Graduated School of Engineering Science, Osaka University

• OKAMURA Yasuyuki

  Graduated School of Engineering Science, Osaka University

抄録

A novel structure of guided-wave electro-optic modulators is proposed and their operation of the optical intensity modulation is successfully confirmed. The modulators use a newly developed modulation electrode consisting of coupled microstrip lines. A high voltage can be induced by the resonance of the odd propagation mode to realize efficient electro-optic modulation in spite of the microstrip-line configuration. The properties of the coupled microstrip lines were analytically evaluated by using the method of conformal transformations and the effectiveness as a modulation electrode was presented. The modulation electrodes of the half-wavelength coupled microstrip line resonator were designed at 10GHz and 26GHz, where the electrode lengths were 3mm and 1.2mm, respectively. The modulators using these electrodes with the Mach-Zehnder interferometer of LiTaO_3 waveguides were fabricated. The measured modulation coefficient of the 26GHz modulator normalized at 100mW signal input was 0.13 rad.

収録刊行物

• IEICE transactions on electronics

  IEICE transactions on electronics 88 (3), 372-378, 2005-03-01

  一般社団法人電子情報通信学会

キーワード

• modulator
• optical waveguide
• resonator electrode
• millimeter-wave
• radio-on-fiber

詳細情報

• CRID: 1572824502325329920
• NII論文ID: 110003215132
• NII書誌ID: AA10826283
• ISSN: 09168524
• 本文言語コード: en
• データソース種別:
  • CiNii Articles