发明名称 |
Optical element and manufacturing method thereof |
摘要 |
<p>An optical element comprises a substrate (1), a passive waveguide (10) disposed in the substrate, and a laser waveguide (20) disposed in the substrate. The laser waveguide directly contacts with the passive waveguide over a contacting surface (15) to provide a butt coupling between the passive waveguide and the laser waveguide. A step extending is provided between an upper edge (11) of the passive waveguide and an upper edge (21) of the laser waveguide. A covering (30) is also disposed on the passive waveguide. The optical element comprises a substrate, a passive waveguide disposed in the substrate, and a laser waveguide disposed in the substrate. The laser waveguide directly contacts with the passive waveguide over a surface of contact for providing a butt coupling between the passive waveguide and the laser waveguide. A step extending is provided between an upper edge of the passive waveguide and an upper edge of the laser waveguide. A covering is also disposed on the passive waveguide, where the covering and the substrate are provided together with a cladding of lower refractive index around the passive waveguide. A hollow space (35) is provided between a lower edge (31) of the covering and the upper edge of the laser waveguide. An independent claim is included for a method for manufacturing optical element: (A) patterning an optical grating into a substrate; (B) depositing a photoresist onto the patterned substrate having a predetermined thickness; (C) removing photoresist from a region above the optical grating by lithography to produce a master mold; (D) producing a topological negative mold of master mold; (E) transferring an optical grating pattern of the topological negative mold to another substrate; (F) forming passive waveguide in the latter substrate; (G) depositing laser material onto the transferred optical grating pattern to produce laser waveguide in direct contact with the passive waveguide; and (H) providing covering on the upper edge of the passive waveguide.</p> |
申请公布号 |
EP2154760(A2) |
申请公布日期 |
2010.02.17 |
申请号 |
EP20090009312 |
申请日期 |
2009.07.17 |
申请人 |
KARLSRUHER INSTITUT FUER TECHNOLOGIE |
发明人 |
VANNAHME, CHRISTOPH;MAPPES, TIMO, DR.;SCHELB, MAUNO |
分类号 |
H01S5/026;H01L33/00;H01S5/02;H01S5/12;H01S5/36;H01S5/40 |
主分类号 |
H01S5/026 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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