| 摘要 |
PROBLEM TO BE SOLVED: To provide a polymeric optical waveguide which has a simple constitution and has a satisfactory clad mode suppression effect. SOLUTION: A polymeric optical waveguide 10 is a planar polymeric optical waveguide of which the wavelength of guided light is set to about 850 nm, and is provided with a lower clad layer 12, a band-shaped core layer 14 formed on the lower clad layer 12, and an upper clad layer 16 formed around the core layer 14 and on the lower clad layer 12. The lower clad layer 12 and the upper clad layer 16 are made of oxetane resin, wherein a specific block coloring matter is added and uniformly dispersed so as to be 1.0 wt%. The core layer 14 is made of oxetane resin of which the refractive index is 0.2 to 2.0% higher than those of the lower clad layer 12 and the upper clad layer 16. COPYRIGHT: (C)2004,JPO&NCIPI |
