Free space optical tap and multi/demultiplexer
US7116910B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 2002 |
| Grant date | Oct 3, 2006 |
| Priority date | — |
| Expiry date | May 17, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04J14/0201
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A free space optical tap and multi/demultiplexer unit includes at least one optical unit that can tap off an optical signal from and/or add an input optical signal to a received FSO signal. The optical unit propagates the resulting optical signal, via free space, to a next optical unit of the system. The optical unit can include a holographic grating to diffract a portion of the received FSO signal to an optical detector and/or diffract an input optical signal to form part of a free space optical output signal. In addition, the FSO signal can include component signals of different wavelengths, with each optical unit of the system being wavelength specific to a different one of the wavelengths of the FSO signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.