M×N optical matrix switch
US6411753B1 · kind B1 · utility
7Cited by
2References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 28, 2000 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Dec 4, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/3512
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An M×N optical switch in which the focal lengths of the collimating lenses are adjusted so that the waists of the Gaussian beams exiting the collimating lenses are focused on reflecting elements, which are positioned along a diagonal of the array of reflecting elements. This arrangement increases the number of beams that are symmetrical about the waist position, which increases the coupling efficiency. The best possible arrangement occurs when all of the waists are equal in diameter, thereby ensuring that for every output port the distances from the waists to the focusing lens are identical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.