Surface optical Bloch oscillations in semi-infinite waveguide arrays

Chremmos, Ioannis and Efremidis, Nikolaos K. (2012) Surface optical Bloch oscillations in semi-infinite waveguide arrays. Optics Letters, Optical Society of America, 37 (11). pp. 1892-1894. ISSN 0146-9592

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Abstract

We predict that surface optical Bloch oscillations can exist in semi-infinite waveguide arrays with a linear index variation, if the array parameters close to the boundary are appropriately perturbed. The perturbation is such that the surface states obtain the Wannier-Stark ladder eigenvalues of the unperturbed infinite array. The number of waveguides, whose parameters need to be controlled, decreases with increasing ratio of index gradient over coupling. The configuration can find applications as a ‘matched’ termination of waveguide arrays to eliminate the distortion of Bloch oscillations due to reflection on the boundaries.

Item Type: Article
Subjects: Q Science > QC Physics
Depositing User: Dr Ioannis Chremmos
Date Deposited: 11 Jun 2012 07:19
Last Modified: 06 May 2017 01:38
URI: http://preprints.acmac.uoc.gr/id/eprint/128

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