Optical delay line
US5367586A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1993 |
| Grant date | Nov 22, 1994 |
| Priority date | — |
| Expiry date | Mar 26, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/0003
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A variable optical delay line which can delay an optical signal by a selected interval of time comprises an input wavelength router connected to an output wavelength router by means of optical waveguides of different lengths. A wavelength shifter coupled to the input of the input wavelength router shifts the wavelength of the received signal to a desired wavelength. Depending on the wavelength of the signal from the wavelength shifter, the received signal is directed to a specific one of the waveguides of different lengths to provide a delay which is controllable. The output wavelength router directs the optical signals from the various waveguides of different lengths to a common output waveguide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.