| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To solve the problem that the clock skew due to the wiring delay comes into question for the conventional clocks generated by electric signals (on the electric wiring), accompanied with forming a more fine structure or a more high speed LSI structure, and, to avoid this, the optical system for distributing optical clock signals becomes complicated to take the packaging cost. <P>SOLUTION: An optical distribution functional element composed of a fiber optical plate made by bundling optical fiber-shaped waveguides composed of cores and clads at fixed intervals and forming them into a plate is laminated on an LSI chip with a light receiving element mounted thereon, and an external light source is disposed to make incidence of light on the optical distribution functional element at a greater angle (θi>θa) than the aperture angle, thus forming a constitution of the optical distribution element laminated on the LSI using the FOP dispersion mode propagation. This attains a distributor of optical clocks in order to reduce the clock skew by a simple packaging method without changing the chip structure etc. of the LSI. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
