Mode transformer between low index difference waveguide and high index difference waveguide
US6697551B2 · kind B2 · utility
36Cited by
5References
44Claims
0Family size
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Key dates
| Filing date | Jun 26, 2001 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Oct 28, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/305
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A mode transformer that enables low-loss coupling between optical modes of two waveguides with different index difference. The mode size and the effective index are gradually changed between two waveguides to gradually transform the mode shape, size, and speed with minimum power loss. The mode transformer is useful for coupling the mode of an optical fiber waveguide with low index difference to the mode of a planar high index difference waveguide, and vice versa.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.