Nonlinear polarization amplifiers in nonzero dispersion shifted fiber
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United States of America Patent
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Jul 6, 2004
Grant Date -
May 30, 2002
app pub date -
Jan 19, 2001
filing date -
Mar 24, 1998
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Abstract
A broadband fiber transmission system includes a transmission line with at least one zero dispersion wavelength .lambda..sub.o and transmits an optical signal of .lambda.. The transmission line includes a distributed Raman amplifier that amplifies the optical signal through Raman gain. One or more semiconductor lasers are included and operated at wavelengths .lambda..sub.p for generating a pump light to pump the Raman amplifier. .lambda. is close to .lambda..sub.o and .lambda..sub.0 is less than 1540 nm or greater than 1560 nm.
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