Wavelength-division-multiplexing cross-connect using angular dispersive elements and phase shifters
US6049640A · kind A · utility
49Cited by
3References
36Claims
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Key dates
| Filing date | Sep 4, 1997 |
| Grant date | Apr 11, 2000 |
| Priority date | — |
| Expiry date | Sep 4, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q11/0001
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A Wavelength-Division-Multiplexer (WDM) cross-connect is implemented using two connected units of angular dispersive elements, with non-zero relative phase shifts between the elements, which are interconnected using controllable phase shifters. Another embodiment uses two "interleave-chirped" waveguide grating routers connected by waveguides with phase shifters. The phase shifters can be selectively controlled enabling the WDM to be reconfigureable. Yet another embodiment recognizes the symmetrical property of the WDM cross-connect and uses a reflector unit to replace one half of the WDM cross-connect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.