Small integrated free space circulator
US12253746B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2018 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | May 28, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/27
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A small integrated free space circulator, comprising a first polarizing beam splitter (1), a half-wave plate (2), a Faraday rotating plate (3), a beam splitter (4), a quarter-wave plate (5), and a pair of reflective plates (6, 7), wherein the first polarizing beam splitter (1), the half-wave plate (2), the Faraday rotating plate (3), and the beam splitter (4) are sequentially arranged, the quarter-wave plate (5) and the reflective plate (6) are sequentially attached to a side surface of the first polarizing beam splitter (1) adjacent to the half-wave plate (2), and the reflective plate (7) is arranged on a side surface of the beam splitter (4, 8) adjacent to or opposite to the Faraday rotating plate (3); when the reflective plate (7) is arranged on the side surface of the beam splitter (8) opposite to the Faraday rotating plate (3), the reflective plate (7) partially covers the side surface of the beam splitter (8) opposite to the Faraday rotating plate (3). By means of an organic combination of optical elements such as the polarizing beam splitters (1, 4), the wave plates (2, 5), the Faraday rotating plate (3), the reflectors (6, 7), and the birefringent crystal (8), the device ha…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.