Development of high gain and broadband superconducting booster circuit for optical modulator

光调制器高增益宽带超导升压电路的研制

• 批准号: 12555013
• 负责人: YOSHIDA Keiji
• 金额: $ 8.06万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12555013/
• 关键词: Superconductor; Optical Modulator; Microwave-Optical Device

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 10GHz, bandwidth of 5MHz, and the voltage gain of 33dB 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. We designed the booster circuit with the meanderline 3-pole Chebyshev filter fabricated by a YBCO thin film on a MgO substrate with the dimension of 10[mm]×10[mm]. The YBCO electrode on MgO substrate was flip-chip bonded onto an optical waveguide in a LiNbO3 substrate, and was cooled down by a refrigerator. The comparison of the observed group delay of S11 (return loss) of the device and the simulation results. The observed data are in reasonable agreements with those expected from theory.

已经研究了使用超导电路的Linbo3光学模块化和开关的设计和性能。 33dB使用电磁波模拟器。曲折的3孔Chebyshev滤波器滤Fabco薄膜的MGO速率为10 [mm] x 10 [mm]。通过设备的折射率（返回损失）和仿真来冷却。

项目成果

K. Yoshida, et al.: "Design and performance of high gain superconducting booster circuit for LiNbO3 optical modulator"Physica C. 372. 360-363 (2002)

K. Yoshida等：“LiNbO3光调制器高增益超导升压电路的设计与性能”Physica C. 372. 360-363 (2002)

K.Yoshida, et al.: "Design and Performance of Superconducting Circuit for LiNbO3 Optical Modulator and Switch"IEEE Trans.Appl.Supercond.. 12(in press). (2003)

K.Yoshida 等人：“LiNbO3 光调制器和开关的超导电路的设计和性能”IEEE Trans.Appl.Supercond.. 12（印刷中）。

H.Kanaya, et al.: "Design and Performance of High Tc Superconducting Coplanar Waveguide Matching Circuit for RF-CMOS LNA"IEICE Trans. Electron.. E86-C. 37-41 (2003)

H.Kanaya 等人：“RF-CMOS LNA 的高温超导共面波导匹配电路的设计和性能”IEICE Trans。

吉田啓二: "高温超伝導による高周波受動部品"電気学会技術報告. 783. 18-22 (2000)

Keiji Yoshida：《基于高温超导性的高频无源元件》日本电气工程师学会技术报告 783. 18-22 (2000)。

K. Yoshida, et al.: "Design and Performance of Superconducting Circuit for LiNbO3 Optical Modulator and Switch"IEEE Trans. Appl. Supercond. 12. (in press). (2003)

K. Yoshida 等人：“LiNbO3 光调制器和开关的超导电路的设计和性能”IEEE Trans。