Effects of random and systematic perturbations in a one-dimensional photonic crystal wavelength converter.
We study the problem of the tolerance to fabrication errors in one-dimensional photonic crystal wavelength converters. In particular we consider the case of wavelength conversion obtained via quasiphase matching (QPM) based on a periodic amplitude modulation of the fundamental wave (Bloch-mode-QPM). Both numerical simulations of a waveguide-based structure and experimental results in an AlGaAs thin-film multilayer show that the proposed QPM mechanism is extremely tolerant to both systematic and random errors in the periodicity and duty cycle of the grating.
Bragheri
F
F
INFM and Department of Electronics, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy. francesca.bragheri@unipv.it
Faccio
D
D
Romagnoli
M
M
Krauss
T
T
Roberts
J
J