Abstract
We analyze the optical properties including chromatic
dispersion, birefringence, and nonlinear coefficient dependence on the ellipticity
of photonic nanowires. We propose a linear approximation to determine the
equivalent-circular photonic nanowire exhibiting similar optical characteristics
with the elliptical nanowire. We find strong birefringence up to the order
of $10^{- 2}$ in
elliptical photonic nanowires that could be very attractive for optical fiber
sensors and stable combs. We also investigate the effect of the ellipticity
on the supercontinuum generation which is found to be detrimental to the spectral
broadening.
© 2012 IEEE
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