| 摘要 |
<p>An optical coupling between an optical component (9), e.g. a light source, and a waveguide, such as a silica on silicon waveguide, the waveguide comprising a core (3) and cladding layer (4) of a first material (SiO2) supported on a first substrate (1) of a second material (Si), the core (3) being spaced from the first substrate (1) by a known distance, wherein recesses (5) are formed through the cladding layer (4) to the first substrate (1) and the optical component (9) comprises, or is mounted on a second substrate (7) which comprises, projections (8) of known length, each projection (8) being located in contact with the first substrate (1) within a respective recess (5) so that the optical component (9) is positioned in a known location relative to the first substrate (1) and hence to the waveguide core (3).</p> |
