Photonic cross-connect

Details Photonic cross-connect Photonic cross-connect

2008-11-21

2011-12-06

Stultz, Jessica (Department: 2828)

Optical communications

Multiplex

Wavelength division or frequency division

C398S049000, C398S050000

Reexamination Certificate

active

08073332

ABSTRACT:
A photonic cross-connect includes a plurality of ingress WS-switches with drop outputs outputting WDM drop signals including odd channels and a plurality of egress WS-switches for receiving WDM add signals including add channels. Wavelength selective elements in a drop path and in an add path comply with a double frequency spacing and about a double bandwidth of the ingress WS-switches or egress WS-switches. If both odd and even channels are dropped and added, separate add and drop paths are provided for the odd and for the even channels.

REFERENCES:
patent: 6256433 (2001-07-01), Luo et al.
patent: 7043159 (2006-05-01), Solheim
patent: 7764881 (2010-07-01), Aoki
patent: 2001/0024542 (2001-09-01), Aina et al.
patent: 2006/0098981 (2006-05-01), Miura et al.
patent: WO 2006/114435 (2006-11-01), None

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