Coupling Efficiency of a Spot Size Converter for Optical Fiber-Chip Connections

The light propagation in optical waveguide must be able to maintain low loss, coupling loss and scattering condition, especially the junction. In this research, a spot size converter is proposed preserve lowest loss. This composed of single mode fiber (SiO2) including inversed taper. input signal from launched into photonic integrated circuits then coupled Si-Slab waveguide. Furthermore, linear form with length dependence has been studied obtain optimal position chip analyzed efficiency it. purpose research procure converter. simulation result shows 0.62 dB 0.24 on TE TM condition respectively. Along increase taper length, obtained tends decrease as well. So that, it can assumed design 100 μm provides highest efficie ncy.