 A new design of spot-size converter, SSC, has been developed which couples light from a cleaved single-mode fiber, SMF, into a silicon SI wire waveguide on a silicon-on-insulator, SOI platform. The device exhibits a low coupling loss of 0.27 dB, while maintaining polarization-dependent loss, PDL, below 0.25 dB and 1 dB alignment tolerances of minus 2.02 and minus 2.02 microns respectively. Additionally, the starting tip width of the tapered waveguide is kept within the limits of current lithography, making this an ideal solution for reducing coupling losses between the SMF and the C waveguide. This article was authored by Jin Yang Xiao, Zhu Tian Wang, Nan Yi, and others.