Optical waveguides – Having nonlinear property
Reexamination Certificate
2005-08-23
2005-08-23
Healy, Brian (Department: 2874)
Optical waveguides
Having nonlinear property
C385S095000, C385S096000, C385S098000, C385S123000, C385S124000, C372S006000, C359S334000, C359S341100, C359S341300
Reexamination Certificate
active
06934454
ABSTRACT:
An optical fiber transmission line including first, second and third optical fibers connected together so that light travels through the transmission line from the first optical fiber, then through the second optical fiber and then through the third optical fiber. The first, second and third optical fibers have first, second and third characteristic values, respectively. The second characteristic value is larger than the first characteristic value and the third characteristic value. The characteristic value of a respective optical fiber being a nonlinear refractive index of the optical fiber divided by an effective cross section of the optical fiber. Pump light is supplied to the transmission line so that Raman amplification occurs in the transmission line as an optical signal travels through the transmission line.
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Hainberger Rainer
Hoshida Takeshi
Terahara Takafumi
Fujitsu Limited
Healy Brian
Petkovsek Daniel
Staas & Halsey , LLP
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