Method and device for easily and rapidly measuring nonlinear...

Details Method and device for easily and rapidly measuring nonlinear... Method and device for easily and rapidly measuring nonlinear...

2005-06-21

2005-06-21

Nguyen, Tu T. (Department: 2877)

Optics: measuring and testing

For optical fiber or waveguide inspection

Reexamination Certificate

active

06909496

ABSTRACT:
A transmitting section makes light, intensity-modulated by a modulating signal of a sine wave having a designated frequency, be incident on one end side of an optical fiber which is a measurement object. A feature value determining section converts the light, which exits from another end side of the optical fiber, into an electric signal, and finds, from the electric signal, a predetermined feature value of a signal component having a frequency equal to the frequency of the modulating signal. A computing section obtains a nonlinear refractive index of the optical fiber to be measured from the predetermined feature value by calculation corresponding to the predetermined feature value based on a nonlinear Schroedinger (Schrödinger) equation.

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