F
Fumito Kubota
Researcher at National Institute of Information and Communications Technology
Publications - 52
Citations - 472
Fumito Kubota is an academic researcher from National Institute of Information and Communications Technology. The author has contributed to research in topics: Photonic-crystal fiber & Wavelength-division multiplexing. The author has an hindex of 12, co-authored 52 publications receiving 464 citations.
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Journal ArticleDOI
High-performance optical code generation and recognition by use of a 511-chip, 640-Gchip/s phase-shifted superstructured fiber Bragg grating
TL;DR: The generation and recognition of a record-length 511-chip optical code is experimentally demonstrated by use of a superstructured fiber Bragg grating (SSFBG) with a chip rate of 640 Gchips/s, indicating its potential for processing a long optical code with an ultrahigh chip rate.
Journal ArticleDOI
PSK self-homodyne detection using a pilot carrier for multibit/symbol transmission with inverse-RZ signal
T. Miyazaki,Fumito Kubota +1 more
TL;DR: In this article, a phase shift-keying (PSK) self-homodyne detection scheme using a polarization-multiplexed pilot-carrier with an inverse return-to-zero (RZ) intensity modulation signal for 2-bit/symbol transmission at 20 Gb/s was demonstrated.
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Nanophotonic Computing Based on Optical Near-Field Interactions between Quantum Dots
Makoto Naruse,Tetsuya Miyazaki,Tadashi Kawazoe,Suguru Sangu,Kiyoshi Kobayashi,Fumito Kubota,Motoichi Ohtsu +6 more
TL;DR: A nanophotonic comput-ing architecture composed of table-lookup operations, asschematically shown in Fig.1, drastically changes the fundamen-tal design rules of optical functional systems.
Journal ArticleDOI
Widely tunable femtosecond soliton pulse generation at a 10-GHz repetition rate by use of the soliton self-frequency shift in photonic crystal fiber.
Kazi S. Abedin,Fumito Kubota +1 more
TL;DR: A soliton self-frequency shift of approximately 120 nm in a fiber with 1.56-microm pulses generated at a 10-GHz repetition rate by an actively mode-locked laser is demonstrated.
Journal ArticleDOI
Nanometric summation architecture based on optical near-field interaction between quantum dots.
Makoto Naruse,Tetsuya Miyazaki,Fumito Kubota,Tadashi Kawazoe,Kiyoshi Kobayashi,Suguru Sangu,Motoichi Ohtsu +6 more
TL;DR: A nanoscale data summation architecture is proposed and experimentally demonstrated based on the optical near-field interaction between quantum dots based on local electromagnetic interactions between a few nanometric elements via optical near fields.