G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/41 (2006.01) G01M 11/00 (2006.01) G01M 11/02 (2006.01)
Patent
CA 2177906
A method and apparatus for determining the non- linear refractive index coefficient for an optical fibre. The method comprising sending a train of transform-limited optical pulses with wavelength close to the zero-dispersion wavelength of the fibre and high and variable peak power, so as to give rise to self-phase modulation, into a fibre; measuring the spectral broadening of the signal exiting the fibre for a number of values of the peak power of the pulses; and obtaining the nonlinear refractive index from the angular coefficient of the straight line representing spectral broadening versus peak power. The apparatus for performing the method includes means for determining the spectral broadening of the pulses as the peak power varies and means for obtaining the nonlinear refractive index from the angular coefficient of the straight line representing spectral broadening versus peak power.
Calvani Riccardo
Caponi Renato
Naddeo Claudio
Roccato Diego
Agilent Technologies Inc.
Ridout & Maybee Llp
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