| 摘要 |
PROBLEM TO BE SOLVED: To solve the wavelength dependence of loss uniformity between waveguides for output. SOLUTION: In a waveguide-type optical splitter 10, a waveguide 12 for input, a plurality of waveguides 13 for output and a slab waveguide 14 are formed on a substrate 11, the slab waveguide 14 has an incident end 15 and an output end 16; the output end 16 presents the circular shape centering around the incident end 15 or its vicinity; the waveguide 12 for input is connected with the incident end 15 and the plurality of waveguides 13 for output are connected with the output end 16. Then, the waveguide 12 for input is connected with the incident end 15 via a narrow width tapered waveguide 18, whose opening width is narrowed. COPYRIGHT: (C)2006,JPO&NCIPI |
