| 摘要 |
A signal transmission system comprises an optical waveguide (1), a plurality of electro-optical transducers (2,3) and a plurality of opto-electric transducers (4,5). The transducers are arranged adjacent to discontinuities in the surface of the optical waveguide, the discontinuities taking the form of grooves (6,7,8,9). The surface layer of the optical waveguide (1) may have a different refractive index to that of the core or may be a reflective material, the surface layer being selectively removed to form the discontinuities. The system may be used to couple signals between printed circuit boards in electronic apparatus particularly high frequency signals when a metal cored mother board is used. <IMAGE> |
