| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical filter removing high order trapped mode of guided light without using microfabrication shorter than the wavelength of guided light. <P>SOLUTION: Optical waveguides F11, F12 are alternately arranged on a substrate 10 and are connected so that a coupling efficiency to a basic trapped mode becomes higher than the coupling efficiency to high order trapped mode or to the linear combination of the high order trapped mode. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
