| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an optical switch which reduces the burden on a driving circuit and can make high-speed operation. <P>SOLUTION: The optical switch for changing over transmission routes of an optical waveguide by a refractive index change due to carrier injection is provided with a carrier accumulation layer which accumulates the injected carriers onto a semiconductor substrate formed with the optical waveguide. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
