Optical transmission system constructing method and system

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7167652
APP PUB NO 20040161189A1
SERIAL NO

10777656

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.

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Patent Owner(s)

  • HITACHI, LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Aoki, Satoshi Chigasaki, JP 151 1331
Ashi, Yoshihiro Yokohama, JP 99 1700
Kazawa, Toru Kokubunji, JP 13 113
Matsuda, Hironari Yokohama, JP 14 228
Nakano, Hiroyuki Asaka, JP 206 2034
Nakano, Yukio Zama, JP 106 3343
Nishimura, Shin Yokohama, JP 62 424
Sakakida, Naohiro Kawasaki, JP 15 236
Sasaki, Shinya Kodaira, JP 122 2351
Takatori, Masahiro Hachiouji, JP 74 1570
Takeyari, Ryoji Koganei, JP 32 615
Tomooka, Keiji Yokohama, JP 16 138

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