Optical fiber transmission line
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United States of America Patent
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Jun 22, 2004
Grant Date -
Aug 29, 2002
app pub date -
Jan 25, 2002
filing date -
Jan 31, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical fiber transmission line for realizing satisfactory long haul transmission characteristics using two kinds of optical fibers. The optical fiber transmission line includes a plurality of local dispersion compensating spans, wide dispersion compensating spans disposed at predetermined intervals, and optical repeating amplifiers to connect each span. The local dispersion compensating span includes a first optical fiber with positive dispersion having an effective core area of 130 .mu.m.sup.2 or more and a second optical fiber with a negative dispersion value of -50 ps/nm/km or less to transmit the light output from the first optical fiber. The wide dispersion compensating span consists of a third optical fiber having the same configuration and composition with the first optical fiber.
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