| 摘要 |
PROBLEM TO BE SOLVED: To realize an optical waveguide which generates SC (super continuum) light near visible light. SOLUTION: A light guide portion 12a of a quartz glass film 12 laid on a silicon substrate 11 functions to guide light. Holes 13 are formed in a position along the both sides of the light guide portion 12a. A vacancy 14 is formed in a part of the silicon substrate 11 opposing the bottom of the light guide portion 12a, and the vacancy 14 is connected to the holes 13. Consequently, the entire upper surface of the light guide portion 12a is surrounded by air, the entire lower surface is surrounded by air in the vacancy 14, and most of both side faces are surrounded by air in the holes 13. The light guide portion 12a thereby functions as a core while air functions as a clad to produce an optical waveguide having an extremely large specific refractive-index difference, which generates SC light near visible light. COPYRIGHT: (C)2006,JPO&NCIPI |
