S
Suguru Yamaoka
Researcher at Nippon Telegraph and Telephone
Publications - 22
Citations - 282
Suguru Yamaoka is an academic researcher from Nippon Telegraph and Telephone. The author has contributed to research in topics: Laser & Transmission (telecommunications). The author has an hindex of 5, co-authored 14 publications receiving 123 citations. Previous affiliations of Suguru Yamaoka include Osaka City University.
Papers
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Journal ArticleDOI
Directly modulated membrane lasers with 108 GHz bandwidth on a high-thermal-conductivity silicon carbide substrate
Suguru Yamaoka,Nikolaos-Panteleimon Diamantopoulos,Hidetaka Nishi,Ryo Nakao,Takuro Fujii,Koji Takeda,Tatsurou Hiraki,Takuma Tsurugaya,Shigeru Kanazawa,Hiromasa Tanobe,Takaaki Kakitsuka,Takaaki Kakitsuka,Tai Tsuchizawa,Fumio Koyama,Shinji Matsuo +14 more
TL;DR: In this paper, a membrane distributed reflector laser on a low-refractive-index and high-thermal-conductivity silicon carbide substrate was proposed to achieve a 42 GHz relaxation oscillation frequency.
Journal ArticleDOI
Initial process of photoluminescence dynamics of self-trapped excitons in a β − Ga 2 O 3 single crystal
TL;DR: In this article, the photoluminescence (PL) dynamics of self-trapped excitons (STEs) in a single crystal were investigated from the viewpoint of the transition process from the free exciton to the STE.
Journal ArticleDOI
Evidence for formation of self-trapped excitons in a β-Ga2O3 single crystal
Suguru Yamaoka,Masaaki Nakayama +1 more
TL;DR: In this article, the authors investigated photoluminescence and absorption properties of a β-Ga2O3 single crystal from the viewpoint of the stability of self-trapped excitons (STEs).
Proceedings ArticleDOI
239.3-Gbit/s net rate PAM-4 transmission using directly modulated membrane lasers on high-thermal-conductivity SiC
Suguru Yamaoka,Nikolaos-Panteleimon Diamantopoulos,Hidetaka Nishi,Ryo Nakao,T. Fujü,Koji Takeda,Tatsurou Hiraki,Shigeru Kanazawa,Hiromasa Tanobe,Takaaki Kakitsuka,Tai Tsuchizawa,Fumio Koyama,Shoichiro Matsuo +12 more
TL;DR: In this article, a directly modulated membrane laser on high-thermal-conductivity SiC exhibiting >100 GHz bandwidth is presented, where a -40GHz relaxation oscillation frequency and a -95-GHz photon-photon resonance are achieved.
Journal ArticleDOI
>100-GHz Bandwidth Directly-Modulated Lasers and Adaptive Entropy Loading for Energy-Efficient >300-Gbps/λ IM/DD Systems
Nikolaos-Panteleimon Diamantopoulos,Hiroshi Yamazaki,Suguru Yamaoka,Munehiko Nagatani,Hidetaka Nishi,Hiromasa Tanobe,Ryo Nakao,Takuro Fujii,Koji Takeda,Takaaki Kakitsuka,Hitoshi Wakita,Minoru Ida,Hideyuki Nosaka,Fumio Koyama,Yutaka Miyamoto,Shinji Matsuo +15 more
TL;DR: These results pave the way towards low-cost and energy-efficient Terabit Ethernet and a significant step towards achieving DML-based 400-Gbps/λ IM/DD systems in the future.