Square lattice W1 waveguide photonic crystals lasers for telecommunications

O. Gauthier-Lafaye; S. Bonnefont; F. Lozes-Dupuy; D. Mulin

doi:10.1117/12.608422

7 July 2005 Square lattice W1 waveguide photonic crystals lasers for telecommunications

O. Gauthier-Lafaye, S. Bonnefont, F. Lozes-Dupuy, D. Mulin

Proceedings Volume 5840, Photonic Materials, Devices, and Applications; (2005) https://doi.org/10.1117/12.608422
Event: Microtechnologies for the New Millennium 2005, 2005, Sevilla, Spain

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.

Citation Download Citation

O. Gauthier-Lafaye, S. Bonnefont, F. Lozes-Dupuy, and D. Mulin "Square lattice W1 waveguide photonic crystals lasers for telecommunications", Proc. SPIE 5840, Photonic Materials, Devices, and Applications, (7 July 2005); https://doi.org/10.1117/12.608422

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