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Proceedings Paper

Square lattice W1 waveguide photonic crystals lasers for telecommunications
Author(s): O. Gauthier-Lafaye; S. Bonnefont; F. Lozes-Dupuy; D. Mulin
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Paper Abstract

Edge emitting photonic crystal (PhC) laser are the keystone opening the way to highly integrated planar photonic circuits. Most of the geometries investigated to date rely on the use of the hexagonal lattice which offers a fully opened photonic band gap. However, it was recently demonstrated that the square lattice based W1 waveguide geometry can provide single mode lasing across the gain whole spectral window (over 150 nm demonstrated under optical pumping). This rather unique property is of high interest for designing high yield, integrated, single mode lasers arrays. In this paper, we show that lasing occurs due to 2nd order DFB effect. Based on 2 and 3 dimensional FDTD computations, we show that the spectral selectivity of the square lattice arises from in plane and out of plane diffraction. We study the tunability options provided by this geometry using FDTD models. We show that whilst C-WDM is compatible with simple design schemes using lattice period variations, WDM and DWDM specifications require the use of a rectangular deformation of the lattice.

Paper Details

Date Published: 7 July 2005
PDF: 8 pages
Proc. SPIE 5840, Photonic Materials, Devices, and Applications, (7 July 2005); doi: 10.1117/12.608422
Show Author Affiliations
O. Gauthier-Lafaye, LAAS-CNRS (France)
S. Bonnefont, LAAS-CNRS (France)
F. Lozes-Dupuy, LAAS-CNRS (France)
D. Mulin, LAAS-CNRS (France)


Published in SPIE Proceedings Vol. 5840:
Photonic Materials, Devices, and Applications
Goncal Badenes; Derek Abbott; Ali Serpenguzel, Editor(s)

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