Method and apparatus for optical phase error correction
US8822959B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 2013 |
| Grant date | Sep 2, 2014 |
| Priority date | — |
| Expiry date | Aug 28, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B6/124
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The phase value of a phase-sensitive optical device, which includes an optical transport region, is modified by laser processing. At least a portion of the optical transport region is exposed to a laser beam such that the phase value is changed from a first phase value to a second phase value, where the second phase value is different from the first phase value. The portion of the optical transport region that is exposed to the laser beam can be a surface of the optical transport region or a portion of the volume of the optical transport region. In an embodiment of the invention, the phase value of the optical device is corrected by laser processing. At least a portion of the optical transport region is exposed to a laser beam until the phase value of the optical device is within a specified tolerance of a target phase value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.