Polarization preserving bidirectional optical element
US11715925B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 20, 2019 |
| Grant date | Aug 1, 2023 |
| Priority date | — |
| Expiry date | Jun 8, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S3/1112
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical device includes first and second 45° Faraday rotators. A 45° polarizer is located between the first and second Faraday rotators such that light in a prescribed polarization state that is incident on the first 45° Faraday rotator traverses the first 45° Faraday rotator as well as the 45° polarizer and the second 45° Faraday rotator. In one implementation the optical device is operable to receive a light beam traveling in a first direction and output a light beam that is in a predetermined polarization state. Likewise, the optical device is operable to receive an unpolarized light beam traveling in a second direction opposite the first direction and outputs a light beam that is in a predetermined polarization state. The polarization state in which the two output beams are arranged may be the same or orthogonal to one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.