K
Koichi Asatani
Researcher at Kogakuin University
Publications - 59
Citations - 596
Koichi Asatani is an academic researcher from Kogakuin University. The author has contributed to research in topics: Network packet & Optical fiber. The author has an hindex of 14, co-authored 59 publications receiving 586 citations. Previous affiliations of Koichi Asatani include Nippon Telegraph and Telephone.
Papers
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Journal ArticleDOI
Speckle Noise Reduction in Fiber Optic Analog Video Transmission Using Semiconductor Laser Diodes
Ken-ichi Sato,Koichi Asatani +1 more
TL;DR: It is experimentally confirmed that the proposed modulation method is effective in reducing speckle noise, and the results of the transmission tests have confirmed the feasibility of analog video transmission using semiconductor laser diodes.
Journal ArticleDOI
High-speed optical pulse transmission at 1.29-µm wavelength using low-loss single-mode fibers
TL;DR: In this paper, a GaInAsP/InP double-heterostructure semiconductor laser emitting at 1.293 μm is modulated directly in nonreturn-to-zero (NRZ) codes at digit rates tanging from 100 Mbit/s to 1.2 Gbps.
Journal ArticleDOI
A Field Trial of Fiber Optic Subscriber Loop Systems Utilizing Wavelength-Division Multiplexers
TL;DR: This paper first describes fiber optic transmission technologies for subscriber loops, then, the system configuration and experimental results of the Yokosuka field trial are presented.
Journal ArticleDOI
Linearization of LED Nonlinearity by Predistortions
Koichi Asatani,T. Kimura +1 more
TL;DR: In this article, a linearizing method for minimizing LED nonlinear differential gain and differential phase distortions, using predistortion, was proposed and experimentally examined, and with precise adjustment of the predistort circuits, the DG of a typical LED was improved from 12.5 percent to less than 1 percent.
Book
CCITT standardization of network node interface of synchronous digital hierarchy
TL;DR: The nine-row-based frame structure and the virtual container concept, which are the main features of the NNI, are introduced and the future application of asynchronous transfer mode (ATM) is discussed.