Theoretical analysis of finite-height semiconductor-on-insulator-based planar photonic crystal waveguides

Near-field characterization of low-loss photonic crystal waveguides

“…Such dispersion is actually expected for the PCW mode in silicon-on-insulator PBG structures. 23 Considering the wavelength dependence of the propagation constant determined from the corresponding spatial spectrums, we calculated the phase and group velocities for TM-polarized and TEpolarized PCW modes in the wavelength range of 1500-1610 nm. The results obtained were normalized with respect to the speed of light in vacuum and plotted in Fig.…”

Near‐field characterization of photonic crystal Y‐splitters

“…with holes arranged in a triangular array, as this arrangement provides PBG for TE polarized light [16]. Until now, very little attention has been devoted to investigate the propagation of TM polarized light in such PCWs, since there is no PBG for this polarization.…”

Micro-cavities in silicon-on-insulator photonic crystal slabs: Determining resonant frequencies and quality factors accurately

“…Figure 4 shows the calculated Q versus the air hole depth. When the air holes are etched only in the silicon layer (d h ϭ 0.6 a, as in many experimental cases [25,26]), Q is only 789. When the air holes are etched deep enough through the silica layer (d h Ͼ 2.0a), Q reaches its saturated value, 1.66 ϫ 10 3 (more than two times larger than that of d h ϭ 0.6a).…”

“…Silicon-on-insulator wafers are commercially available high-quality structures, and the related nanofabrication technology is nearly compatible with existing mature device fabrication technology for very-large-scale integrated electronic circuits. PhCs made from SOI wafers (for example, see [23][24][25][26][27][28]) are thus promising, since they may be a bridge to connect photonic circuits and electronic circuits. Another advantage of SOI-type PhC structures is that they are more mechanically stable than membrane-type ones, due to the solid substrate.…”