Multi-channel passive dense wavelength division multiplexing...

Details Multi-channel passive dense wavelength division multiplexing... Multi-channel passive dense wavelength division multiplexing...

2005-12-20

2005-12-20

Lee, John D. (Department: 2883)

Optical waveguides

With optical coupler

Switch

C398S079000, C398S082000, C398S083000, C398S085000

Reexamination Certificate

active

06978059

ABSTRACT:
A multi-channel passive DWDM multiplexing module, which can be installed in a standard shelf of a patch panel, takes multiple optical signals of defined frequencies and provides a multiplexed optical output. The module simplifies greatly intraoffice fiber optical connections by situating itself adjacent where the fiber optical cables are terminated, thus eliminating fiber optical cable routing through overhead racks. The module saves inter-office fiber optical resources by providing passive DWDM multiplexing, which combines multiple optical signals into one fiber optical cable. The module further saves cost on spare parts at each central office by providing a maintenance connection that can be alternately used as a spare input connection.

REFERENCES:
patent: 6396611 (2002-05-01), Distefano et al.
patent: 6504963 (2003-01-01), Fang et al.
patent: 2002/0141720 (2002-10-01), Halgren et al.
Lucent Technologies Press Release and Product Brochure/Tech Sheets, “Lucent Technologies delivers next-generation portfolio of products that breaks the metro bottleneck”, Jun. 5, 2001.
Evolution of Optical Transport Technologies: From SONET/SDH to WDM; Dirceu Cavendish, C&C Research Laboratories; IEEE Communications Magazine Jun. 2000; pp. 164-172.
Lucent Technologies; Metropolis article; Jun. 5, 2001; 9 pages.

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