Coherent mixing of optical signals
US4898443A · kind A · utility
6Cited by
0References
17Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 19, 1988 |
| Grant date | Feb 6, 1990 |
| Priority date | — |
| Expiry date | Dec 19, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B10/60
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A non-circularly-symmetric intensity distribution is formed on a quadrant photodetector by coherently mixing two optical signals propagating in selected modes of different order. These modes are chosen either such that a change in relative phase of the two signals produces solely a rotation of the orientation of that intensity distribution, or such that a change in relative states of polarization produces this rotation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.