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.
INFM and Department of Electronics, University of Pavia, Via Ferrata 1, 27100 Pavia, Italy. francesca.bragheri@unipv.it
F
F
Bragheri
D
D
Faccio
M
M
Romagnoli
T
T
Krauss
J
J
Roberts