Variable optical delay line and use of the variable optical delay line
US6795596B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 17, 2002 |
| Grant date | Sep 21, 2004 |
| Priority date | — |
| Expiry date | Dec 17, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F1/212
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variable optical delay line that has a first input (16), a first output (36), and a first phase shifter stage (10) including a first phase-shifting element (41). A first delay stage (12) is connected to the first phase shifter stage (10) and has a second phase-shifting element (44). A second phase shifter stage (14) is connected to the first delay stage (12) and has a third phase-shifting element (46). The first phase shifter stage (10), the first delay stage (12) and the second phase shifter stage (14) form a Mach-Zehnder structure, and the first, the second and the third phase-shifting elements (41, 44, 46) are driven in such a way that the variable optical delay line (100) generates a predetermined delay.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.