Waveguide light scattering
method as a best way for research of the statistic irregularities of
integrated-optical waveguides
A. A. Egorov
A.M. Prokhorov’ General Physics Institute, Russian Academy of
Sciences
Received June 21, 2010
Abstract.
The phenomenon of the waveguide light scattering in the irregular planar integrated-optical
waveguide is investigated. The solution of the direct scattering problem is
fined with the help of the theory of perturbations. The inverse waveguide
scattering problem consists in restoring of spectral density function and/or
autocorrelation function of waveguide’s irregularities and determination of
irregularities’ parameters by the measuring data of radiating field in the far
zone. The computer simulation and experimental results allow approving, that
our method permits to receive an approximate correct solution of the inverse
scattering problem with the rms error of restoring of the given autocorrelation
functions no more than 35% in the presence of high real noise (for SNR ≥
1). The statistic parameters of irregularities in this case are determined with
the error less than 15-30 %.
Keywords:
integrated optics, waveguide, irregularities, waveguide scattering phenomenon,
autocorrelation function, noise, computer modeling, incorrect scattering
problem.