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Fumio Futami
Researcher at Tamagawa University
Publications - 45
Citations - 524
Fumio Futami is an academic researcher from Tamagawa University. The author has contributed to research in topics: Waveform & Optical fiber. The author has an hindex of 12, co-authored 45 publications receiving 515 citations. Previous affiliations of Fumio Futami include Fujitsu & University of Tokyo.
Papers
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Journal ArticleDOI
Generation of over 140-nm-wide super-continuum from a normal dispersion fiber by using a mode-locked semiconductor laser source
TL;DR: In this paper, a supercontinuum (SC) spectrum flatly broadened over 140-nm 10dB bandwidth is generated by using a mode-locked semiconductor laser as a pulse source at 1550 nm.
Journal ArticleDOI
All-optical wavelength conversion of 500-fs pulse trains by using a nonlinear-optical loop mirror composed of a highly nonlinear DSF
TL;DR: In this paper, a design guideline for ultrafast wavelength conversion using a nonlinear optical loop mirror (NOLM) composed of a dispersion-shifted fiber (DSF) is presented.
Journal ArticleDOI
Polarization-independent, wavelength-shift-free optical phase conjugator using a nonlinear fiber Sagnac interferometer
TL;DR: In this paper, a novel configuration of a wavelength-shift-free optical phase conjugator using a nonlinear fiber Sagnac interferometer was proposed and experimented with.
Patent
Method, device, and system for processing optical signals
Shigeki Watanabe,Fumio Futami +1 more
TL;DR: In this paper, a method for processing an optical signal is provided, where an output optical signal output from the optical waveguide structure is supplied to an optical bandpass filter to extract components except a small-chirp component from the output of the optical signal.
Patent
Optical waveform measuring apparatus and optical waveform measuring method
Fumio Futami,Shigeki Watanabe +1 more
TL;DR: In this paper, an optical waveform measuring apparatus was designed to eliminate the polarization dependency of an intensity correlation signal without a polarization diversity arrangement. But it was not designed for the measurement of light under measurement.