NDLI: Light Bullet Mode-Locking In Waveguide Arrays

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Light Bullet Mode-Locking In Waveguide Arrays

Content Provider	Semantic Scholar
Author	Williams, Matthew O. Kutz, J. Nathan
Copyright Year	2010
Abstract	A theoretical proposal is presented for the gener- ation of mode-locked light-bullets in planar waveguide arrays, extending the concept of time-domain mode-locking in waveguide arrays to spatial (transverse) mode-locking in slab waveguides. The model presented yields three-dimensional localized states that act as global attractors to the waveguide array system. Single pulse stationary and time-periodic solutions as well as the transition to multi-pulse solutions as a function of gai n are observed to be stabilized in such a system. I. I NTRODUCTION Fig. 1. A schematic of the two-dimensional waveguide array. The waveg- uides, shown in red, are separated by low-index insulating regions. The proposed structure of the waveguides are a Bragg grating structure, shown to the left. Gain is applied to waveguide 0 by means of an injection current created by biasing the conducting contact (See Ref. (9) for recent experiments). Additionally, attenuation is applied only t o waveguide 2. The prototypical vertical distribution of the intensity is sho wn on the right. The Bragg grating structure confines the fields to the waveguides with weak evanescent coupling allowing energy transfer. and self-phase modulation. The light-bullets considered here are self-organizing (from white-noise initial conditions ) and stabilized in the transverse dimension via the NLMC in the planar waveguide geometry. Further, the light-bullets generated are in a cavity-less configuration since no mirrors are used t o form a cavity or ring geometry. The mode-locking is robust under perturbation and self-starting, suggesting it may be an ideal photonic device for numerous all-optical applicatio ns. This adds yet another potential method and technology for generating localized cavity-like solitons (14).
File Format	PDF HTM / HTML
Alternate Webpage(s)	http://www.iaeng.org/publication/IMECS2010/IMECS2010_pp1315-1320.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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