Abstract
We present a simple method based on the soliton perturbative theory
to design microwires of non-uniform diameter profiles. In contrast to previous
methods, the one presented here relies on minimizing the soliton perturbation
by third order dispersion (TOD) while taking into account the change of the
soliton local duration along the microwire. The method leads to a design that
maximizes the soliton self-frequency shift in non-uniform microwires. The
microwire design comprises a unique dispersion profile such that a wavelength-shifting
soliton experiences only weak perturbations from the TOD and avoids shedding
its energy into the dispersive waves. The TOD perturbation is quantified with
an analytic expression $\epsilon$ that is kept below a threshold value, thus keeping a soliton weakly
perturbed by TOD in every position within the microwire. Numerical simulations
are conducted to check the validity of the method. We consider a fundamental
soliton centered at a wavelength of 2000 nm propagating in As2Se3 microwires of length as short as
10 cm. The results show that optimized non-uniform diameter profile allows
the tuning of the self-frequency shifted soliton over a spectral range of
860 nm.
© 2013 IEEE
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription