Katsuyuki Utaka

According to our database, Katsuyuki Utaka authored at least 13 papers between 2005 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

Low Threshold and 10kHz-Class Narrow Linewidth 1.55 µm-Band Quantum Dot Laser Diode on InP(311)B Substrate.

Atsushi Matsumoto, Ryota Yabuki, Shinya Nakajima, Toshimasa Umezawa, Siim Heinsalu, Yuichi Matsushima, Koichi Akahane, Naokatsu Yamamoto, Katsuyuki Utaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2024

2023

Low Loss Fan-Out Structure for Multimode Waveguide-Based Reservoir Computing.

Hirotaka Oshima, Takashi Kan, Hideaki Tanaka, Hidenori Takahashi, Katsuyuki Utaka, Masatoshi Suzuki

Proceedings of the International Conference on Photonics in Switching and Computing, 2023

Low-Power Switching of Polymer Mach-Zhender Type Optical Switch with 45° Mirror for Vertical Interconnection.

Ryo Kuwata, Siim Heinsalu, Yuichi Matsushima, Hiroshi Ishikawa, Katsuyuki Utaka

Proceedings of the International Conference on Photonics in Switching and Computing, 2023

Design and Experiment of Silicon Racetrack-Loop Multi-Mode Waveguide Structure with Low-Loss and Adjustable Couplings for Compact Reservoir Computing Device.

Siim Heinsalu, Katsuyuki Utaka

Proceedings of the International Conference on Photonics in Switching and Computing, 2023

Temperature-Insensitive pulse and 120℃ CW Operation of 1550nm-Band p-doped InAs/InGaAlAs Quantum Dot Lasers on InP(311)B Substrate.

Ryota Yabuki, Atsushi Matsumoto, Ryumi Katsuhara, Siim Heinsalu, Koichi Akahane, Yuichi Matsushima, Hiroshi Ishikawa, Katsuyuki Utaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2023

2022

Sensitivity Improvement of Multi-Slot Subwavelength Bragg Grating Refractive Index Sensors by Increasing the Waveguide Height or Suspending the Sensor.

Siim Heinsalu, Katsuyuki Utaka

Sensors, 2022

Low-loss optical coupling between polymer single-mode waveguide and single-mode fiber using 45° mirror.

Ryo Kuwata, Qin Su, Hirotaka Oshima, Yuichi Matsushima, Hiroshi Ishikawa, Katsuyuki Utaka

Proceedings of the 2022 27th OptoElectronics and Communications Conference (OECC) and 2022 International Conference on Photonics in Switching and Computing (PSC), 2022

2021

Sensitivity improvement for silicon MS-SW BG sensors by waveguide height increase or by waveguide suspension with supporting shape modification.

Siim Heinsalu, Anna Kawano, Yuji Isogai, Yuichi Matsushima, Hiroshi Ishikawa, Katsuyuki Utaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2021

Optimization of suspended ladder BG silicon sensors for high wavelength or amplitude sensitivity.

Siim Heinsalu, Yuichi Matsushima, Hiroshi Ishikawa, Katsuyuki Utaka

Proceedings of the 2021 IEEE Sensors, Sydney, Australia, October 31 - Nov. 3, 2021, 2021

2018

Simultaneous High-speed and Polarization-Independent Switching Operation of 2x2 Silicon Mach-Zehnder-Type Optical Switch.

Kana Shimizu, Tomohiro Shirai, Yuichi Matsushima, Hiroshi Ishikawa, Katsuyuki Utaka

Proceedings of the Photonics in Switching and Computing, 2018

2014

High-speed and compact non-blocking 8×8 InAlGaAs/InAlAs Mach-Zehnder-type optical switch fabric.

Hiroki Kouketsu, Shoko Kawasaki, Noriaki Koyama, Aki Takei, Takafumi Taniguchi, Yuichi Matsushima, Katsuyuki Utaka

Proceedings of the Optical Fiber Communications Conference and Exhibition, 2014

2005

Study on Tapered Multimode Interference-Based Coherent Lightwave Combiners.

Zhigang Wu, Katsuyuki Utaka

IEICE Trans. Electron., 2005

High-speed optical switching of InAlGaAs/InAlAs multi-mode interference photonic switch with partial index-modulation region (MIPS-P).

Shingo Kumai, Tomohiro Ishikawa, Atsuki Okazaki, Katsuyuki Utaka, Hidetaka Amanai, Kaori Kurihara, Kenji Shimoyama

IEICE Electron. Express, 2005