US Patent 9423561 Method of attaching fiber block to silicon photonics

An apparatus to attach a fiber block to a silicon waveguide. The apparatus includes a holder base holding a portion of an array of optical fibers aligned optically in multiple slots in parallel. The apparatus further includes a holder cap combined with the holder base for fixing the portion of the fibers and leaving the fibers free with arbitrary length beyond a first edge of the holder base but keeping only additional second length of the fibers beyond a second edge of the holder base with fiber ending facets at the second length. Additionally, the apparatus includes a silicon photonics waveguide chip including an attachment section connected to a waveguide section. The attachment section includes multiple grooves laid in parallel for respectively attaching with the second length of the fibers so that the fiber ending facets are coupled to multiple waveguides formed in parallel in the waveguide section.