Destouches, N., Sider, B., Tishchenko, A.V. et al. Opt Quant Electron (2006) 38: 123. doi:10.1007/s11082-006-0009-6
The conditions for maximum longitudinal electric field of a TM mode at the surface of a step index slab waveguide, and the value of this maximum are given in a normalized analytical form. They are applied to a grating coupling structure corresponding to a resonant laser mirror or to optical interconnects involving a normally incident free space wave and a singlemode slab waveguide.