Cazo, Rogerio MBarbosa, Carmem LHattori, HaroldoSchneider, Vitor M2015-12-080895-2477http://hdl.handle.net/1885/35142The original square-lattice band-edge structure emitted light in different directions. In a recent paper, we have improved the directivity of these structures by using a honeycomb photonic crystal to shield the original structure. This has improved the performance of such devices, in such a way that light can be coupled directionally to a large waveguide. In this paper, we present a steady-state analysis of the performance of this directive device and study the amount of power which can be coupled into the waveguide, analyzing its performance as an in-plane emitter and the limitations caused by vertical losses.Keywords: Band-edge lasers; Integrated optics devices; Photonic crystal device; Transverse electrics; Crystals; Integrated optics; Light emission; Light polarization; Optical properties; Photons; Quantum efficiency; Waveguides; Semiconductor lasers Diode lasers; Integrated optics devices; Photonic crystal devices200510.1002/mop.209472015-12-08