Optical communications – Multiplex – Optical local area network
Reexamination Certificate
2007-11-06
2007-11-06
Phan, Hanh (Department: 2613)
Optical communications
Multiplex
Optical local area network
C398S098000, C398S099000, C398S100000, C398S045000, C398S046000, C398S047000, C398S079000, C398S075000, C398S182000, C398S183000, C398S164000, C398S154000, C398S155000, C398S158000, C398S141000, C370S367000, C370S366000, C370S299000
Reexamination Certificate
active
11593518
ABSTRACT:
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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Aoki Satoshi
Ashi Yoshihiro
Kazawa Toru
Matsuda Hironari
Nakano Hiroyuki
Hitachi , Ltd.
Kenyon & Kenyon LLP
Phan Hanh
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