High isolation optical switch, isolator or circulator having thin film polarizing beam-splitters
US6487014B2 · kind B2 · utility
15Cited by
17References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 25, 1999 |
| Grant date | Nov 26, 2002 |
| Priority date | — |
| Expiry date | Jan 25, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S359/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical device for controlling the flow of light between ports includes a pair of polarizing devices, which employ frustrated total internal reflection and interference in a thin film coating to reflect p-polarized light and to transmit s-polarized light. Polarization-rotating devices are used to rotate the polarization plane of the s- and p-polarized light beams so as to create optical switches, isolators and circulators using these polarizing devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.