Dual-stage optical isolator minimized polarization mode dispersion and simplified fabrication process
US7023618B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Jul 5, 2001 |
| Grant date | Apr 4, 2006 |
| Priority date | — |
| Expiry date | Oct 20, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S372/703
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An optical isolator includes a first stage configured to refract a light ray applied in a forward direction into a first ray and a second ray. A second stage rotated 90° with respect to the first is configured to refract said first and second rays in a substantially parallel manner. The isolator is configured such that the first ray comprises an e-ray with respect to the first stage and an o-ray with respect to the second stage, and the second ray comprises an o-ray with respect to the first stage and an e-ray with respect to the second stage, thereby substantially reducing the effects of polarization mode dispersion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.