Optical waveguides – Having nonlinear property
Reexamination Certificate
2004-11-30
2011-12-13
Lepisto, Ryan (Department: 2883)
Optical waveguides
Having nonlinear property
C385S123000, C385S124000
Reexamination Certificate
active
08078026
ABSTRACT:
Since the magnitude of a nonlinear effect depends on the nonlinearity coefficient of the microstructured fiber and the intensity of pump light, either the nonlinearity coefficient or the intensity of pump light are adjusted. The nonlinearity coefficient is modified by introducing a nonlinear refractive index profile that has the inverse characteristic of the intensity distribution of either the pump or the signal light. The intensity of the pump light is adjusted by an optical amplifier, an optical attenuator, or a pre-emphasizing filter under the control of a control unit. The control unit controls the intensity of the pump light based on a look-up table which is prepared in advance by experiment or calculation, or based on a function of the pump and signal wavelength.
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Hainberger Rainer
Watanabe Shigeki
Blevins Jerry
Fujitsu Limited
Lepisto Ryan
Staas & Halsey , LLP
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