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Device for canceling the wavelenght dependence of the nonlinearity coefficient of microstructured fibers and microstructured fiber with nonlinear core refractive index profile
Device for canceling the wavelenght dependence of the nonlinearity coefficient of microstructured fibers and microstructured fiber with nonlinear core refractive index profile
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机译：用于消除具有非线性纤芯折射率分布的微结构纤维和微结构纤维的非线性系数的波长依赖性的装置
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摘要
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 (n'2(r)) 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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