Optical isolator
US6599023B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 15, 2001 |
| Grant date | Jul 29, 2003 |
| Priority date | — |
| Expiry date | Aug 17, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/327
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical isolator includes a first collimator, a second collimator and an isolation assembly arranged between the collimators. The first collimator includes a first capillary retaining an input fiber and a first GRIN lens received and retained in a first glass sleeve. The isolation assembly includes two birefringent crystal wedges with an optical rotator interposed between the birefringent crystal wedges. A magnetic ring receives and retains the birefringent crystal wedges and the optical rotator together. The second collimator includes a second capillary retaining an output fiber and a second GRIN lens which are received and retained in a second glass sleeve. A first stainless steel sleeve receives and retains the first glass sleeve and the isolation assembly together while a second stainless sleeve is fit over the second collimator. Apertures are defined in the first stainless steel sleeve. An end of the second stainless steel sleeve is sized to snugly fit into the end of the first stainless steel sleeve and thus properly aligns the collimators with each other. A portion of the second stainless steel sleeve underlaps the apertures of the first stainless sleeve. Welding is perfo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.