Patent ID: 6669537
Filing Date: 2003-12-30
Classification: B24B,B28D,H01L

Abstract:
A silicon base optical waveguide manufacturing method comprising the steps of:performing first-stage dicing of a silicon wafer having a silicon substrate and a plurality of optical waveguides formed on said silicon substrate to form a cut groove by using a first resin diamond blade having a thickness t1; and performing second-stage dicing of said silicon wafer along said cut groove to polish an end face of each of said optical waveguides by using a second resin diamond blade having a thickness t2 greater than said thickness t1; said second resin diamond blade including diamond abrasive grains having a grain diameter of 2 &mgr;m or less; the relation between said thickness t1 and said thickness t2 being set to t1+0.01 mm&lE;t2&lE;t1+0.05 mm.