| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To obtain an optical switch element switching one input signal beam into N pieces of output points with high speed and a reduced loss. <P>SOLUTION: The optical switch has a substrate and a non linear optical thin film 3 consisting of an oxide on the substrate and an optical path of the input signal beam, and the phenomenon in which the refractive index of the non linear optical thin film is changed by energy of light, heat, electricity and the like is applied to switching. <P>COPYRIGHT: (C)2004,JPO</p> |
