Design and performance of superconducting circuits for LiNbO3 optical modulator and switch

K. Yoshida, Y. Kanda, H. Yoshihara, Haruichi Kanaya, S. Shinkai, M. Ishitobi

Research output: Contribution to journalConference articlepeer-review

9 Citations (Scopus)


The design and performance of a LiNbO3 optical modulator and switch, which employ superconducting circuits, have been studied. Based on a novel design method of the booster circuit using superconducting coplanar waveguide transmission lines, we designed a voltage amplifier with center frequency of 10 GHz, bandwidth of 5 MHz, and the voltage gain of 33 dB using an electromagnetic wave simulator. We also designed a high speed optical switch combining optical directional coupler and Mach-Zehnder interferometer. A preliminary experiment with YBCO electrode on MgO substrate flip-chip-bonded on LiNbO3 optical waveguide has been made.

Original languageEnglish
Pages (from-to)1027-1030
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Issue number2 I
Publication statusPublished - Jun 1 2003
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: Aug 4 2002Aug 9 2002

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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