| 摘要 |
<p>An optical waveguide (1) with a multi-layer core (6) comprises a substrate (2), a composite core waveguide (7) formed on the substrate (2) and at least one upper cladding layer (8) embedding said core waveguide (7). The core waveguide (7) is characterised by a composite core layer (6) comprising a first core layer (4) with a consolidation temperature T1C formed on the substrate (2) and at least one other core layer (5) formed on the first core layer (4), wherein the softening temperature T2S of at least one of said at least one other core layers (5) is equal to or less than the consolidation temperature T1C of at least one underlying core layer (4, 5).</p> |
