Search Results - "Tsuzuki, Ken"

Fast nondeterministic random-bit generation using on-chip chaos lasers by Harayama, Takahisa, Sunada, Satoshi, Yoshimura, Kazuyuki, Davis, Peter, Tsuzuki, Ken, Uchida, Atsushi

“…It is shown that broadband chaos suitable for fast nondeterministic random-bit generation in small devices can be achieved in a semiconductor laser with a…”
Get full text

Fast physical random bit generation with photonic integrated circuits with different external cavity lengths for chaos generation by Takahashi, Rie, Akizawa, Yasuhiro, Uchida, Atsushi, Harayama, Takahisa, Tsuzuki, Ken, Sunada, Satoshi, Arai, Kenichi, Yoshimura, Kazuyuki, Davis, Peter

“…We generate random bit sequences from chaotic temporal waveforms by using photonic integrated circuits (PICs) with different external cavity lengths. We…”
Get full text

Chaos laser chips with delayed optical feedback using a passive ring waveguide by Sunada, Satoshi, Harayama, Takahisa, Arai, Kenichi, Yoshimura, Kazuyuki, Davis, Peter, Tsuzuki, Ken, Uchida, Atsushi

“…We report a novel chaos semiconductor laser chip in which a distributed feedback (DFB) laser, two semiconductor optical amplifiers (SOAs) and a photodiode (PD)…”
Get full text

10-Gbit/s, 200 km duobinary SMF transmission using a full C-band tunable DFB laser array co-packaged with InP Mach-Zehnder modulator by Ken Tsuzuki, Shibata, Kikuchi, N., Ishikawa, M., Yasui, T., Ishii, H., Yasaka, H.

“…Full C-band 200 km optical duobinary transmission with a constant modulation voltage is demonstrated by using a wavelength tunable laser co-packaged with an…”
Get full text

Ruthenium-Doped Semi-Insulating InP-Buried InGaAlAs/InAlAs Multi-Quantum-Well Modulators by Kondo, Susumu, Noguchi, Yoshio, Tsuzuki, Ken, Yuda, Masahiro, Oku, Satoshi, Kondo, Yasuhiro, Takeuchi, Hiroaki

“…Ru-doped InP-buried electro-absorption optical modulators are demonstrated for the first time. Ru-doped InP-burying semi-insulating layers were grown by…”
Get full text

Design and Fabrication of Wide Wavelength Range 25.8-Gb/S, 1.3-μM, Push-Pull-Driven DMLs by Kobayashi, Wataru, Fujisawa, Takeshi, Tsuzuki, Ken, Ohiso, Yoshitaka, Ito, Toshio, Kanazawa, Shigeru, Yamanaka, Takayuki, Sanjoh, Hiroaki

“…We design and fabricate wide wavelength range directly modulated lasers (DMLs) on the same InP wafer to realize a large-capacity monolithically integrated…”
Get full text

Random optical pulse generation with bistable semiconductor ring lasers by Sunada, Satoshi, Harayama, Takahisa, Arai, Kenichi, Yoshimura, Kazuyuki, Tsuzuki, Ken, Uchida, Atsushi, Davis, Peter

“…We experimentally show that a random optical pulse train can be generated by modulating a bistable semiconductor ring laser. When the ring laser is switched…”
Get full text

Design and Fabrication of 10-/40-Gb/s, Uncooled Electroabsorption Modulator Integrated DFB Laser With Butt-Joint Structure by Kobayashi, W., Arai, M., Yamanaka, T., Fujiwara, N., Fujisawa, T., Tadokoro, T., Tsuzuki, K., Kondo, Y., Kano, F.

“…This paper describes the wide temperature range operation of an electroabsorption modulator (EAM) integrated with DFB laser diodes (LDs) (EML) designed to…”
Get full text

InP-based n-i-n Mach-Zehnder optical modulator by Tsuzuki, Ken, Ishibashi, Tadao, Yasaka, Hiroshi, Tohmori, Yuichi

“…High‐speed, small‐driving‐voltage phase modulator is developed introducing an n‐i‐n heterostructure in semiconductor layers. A Mach‐Zehnder modulator with an…”
Get full text

40-Gb/s Operation of a 1.3-/1.55-μm InGaAlAs Electroabsorption Modulator Integrated With DFB Laser in Compact TO-CAN Package by Kobayashi, Wataru, Tsuzuki, Ken, Tadokoro, Takashi, Fujisawa, Takeshi, Fujiwara, Naoki, Yamanaka, Takayuki, Kano, Fumiyoshi

“…We have developed compact, cost-effective transistor-outline (TO)-CAN modules based on a 1.3-/1.55-μm InGaAlAs electroabsorption modulator integrated with a…”
Get full text

A 380 fs, 40 GHz mode-locked erbium fiber laser with an MQW nonlinear PM/AM modulator using the pockels effect and the QCSE by Nakazawa, Masataka, Yoshida, Masato, Tsuzuki, Ken

“…We have successfully generated a 380 fs pulse train at 40 GHz from an actively mode-locked erbium fiber laser with an InGaAlAs/InAlAs MQW nonlinear PM/AM…”
Get full text

40-Gb/s Operation of a 1.3-/1.55-[mu]m InGaAlAs Electroabsorption Modulator Integrated With DFB Laser in Compact TO-CAN Package by Kobayashi, Wataru, Tsuzuki, Ken, Tadokoro, Takashi, Fujisawa, Takeshi, Fujiwara, Naoki, Yamanaka, Takayuki, Kano, Fumiyoshi

“…We have developed compact, cost-effective transistor-outline (TO)-CAN modules based on a 1.3-/1.55-μm InGaAlAs electroabsorption modulator integrated with a…”
Get full text

80-Gb/s Low-Driving-Voltage InP DQPSK Modulator With an n-p-i-n Structure by Kikuchi, N., Shibata, Y., Tsuzuki, K., Sanjoh, H., Sato, T., Yamada, E., Ishibashi, T., Yasaka, H.

“…We present a traveling-wave-electrode InP-based differential quadrature phase-shift keying modulator with a novel n-p-i-n waveguide structure. The structure…”
Get full text

Silicon-photonics-based coherent optical subassembly (COSA) for ultra-compact coherent transceiver by Kikuchi, Kiyofumi, Tsuzuki, Ken, Kamei, Shin, Yamanaka, Shogo, Asakawa, Shuichiro, Itoh, Toshihiro, Nasu, Yusuke, Takeda, Kotaro, Honda, Kentaro, Kawamura, Yuriko, Jizodo, Makoto, Takahashi, Masayuki, Usui, Mitsuo, Mawatari, Hiroyasu, Saida, Takashi

“…We actualized a silicon photonics (SiPh)-based coherent optical subassembly (COSA) with a compact and low-height package for the next-generation transceiver…”
Get full text

Full [Formula Omitted]-Band 10-Gb/s 40-km SMF Transmission of InGaAlAs Electroabsorption Modulator by Kobayashi, Wataru, Fujiwara, Naoki, Yamanaka, Takayuki, Tadokoro, Takashi, Fujisawa, Takeshi, Shibata, Yasuo, Ishikawa, Mitsuteru, Arai, Masakazu, Tsuzuki, Ken, Kano, Fumiyoshi

“…This paper describes the 10-Gb/s, full [Formula Omitted]-band (1530 to 1565 nm) operation of 1.55-[Formula Omitted]m electroabsorption modulators (EAMs)…”
Get full text

Wide Temperature Range Operation of a 1.55-$\mu$m 40-Gb/s Electroabsorption Modulator Integrated DFB Laser for Very Short-Reach Applications by Kobayashi, W., Yamanaka, T., Arai, M., Fujiwara, N., Fujisawa, T., Tsuzuki, K., Ito, T., Tadokoro, T., Kano, F.

“…We present the uncooled operation of a 1.55- mum 40-Gb/s InGaAlAs electroabsorption modulator (EAM) integrated distributed-feedback (DFB) laser within a…”
Get full text

Optical Study of Localized Exciton States in CdTe/ZnTe Superlattices by Okamoto, Hiroshi, Suzuki, Kyoichi, Tsuzuki, Ken, Takahashi, Masaaki, Oka, Yasuo

“…Stokes shift ( S ) and linewidth ( W em ) of exciton luminescence were studied as a function of the well layer thickness in the CdTe/ZnTe superlattice (SL) by…”
Get full text

The influence of congestion and ischemia on survival of an experimental vascular pedicle island flap by Tsuzuki, K, Yanai, A, Tange, I, Bandoh, Y

“…We investigated the relationship between the survival rate of experimental rat pedicle island flaps and mild vascular insufficiency, using a flap designed to…”
Get more information

Full C-Band Tunable DFB Laser Array Copackaged With InP Mach-Zehnder Modulator for DWDM Optical Communication Systems by Tsuzuki, K., Shibata, Y., Kikuchi, N., Ishikawa, M., Yasui, T., Ishii, H., Yasaka, H.

“…We fabricated a compact 10-Gb/s-wavelength tunable laser module by integrating a tunable DFB laser array and an InP-based n-i-n Mach-Zehnder modulator in one…”
Get full text

Dye laser treatment of port-wine stains by BANDOH, Y, YANAI, A, TSUZUKI, K.-I

“…The author treated 456 cases of port-wine stains using a tunable dye laser (577-nm wavelength, 1-microsecond pulse, 2-3-mm diameter spot), and followed up 22…”
Get full text