Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1998-11-12
2000-09-05
Pascal, Leslie
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359124, 359161, 370228, H04B 1008, H04B 1012
Patent
active
061151556
ABSTRACT:
A system for dealing with faults in wavelength division multiplexed (WDM) optical communications between two terminals connected by at least two optical fibers monitors the status of communications over both optical fibers. If both optical fibers are operating normally, a first set of channels is routed over the first optical fiber and a second set of channels (which is mutually exclusive of the first set of channels) is routed over the second optical fiber. However, if a fault is detected in either optical fiber, the first terminal combines the first and second sets of channels and routes the combined channels over the remaining optical fiber to the second terminal. The second terminal separates the combined channels to recreate the first and second sets of channels. Wavelength slicers can be used to multiplex and demultiplex the channels at both terminals. This architecture allows the first and second sets of channels to be interdigitally spaced.
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Liu Jian-Yu
Wu Kuang-Yi
Chorum Technologies Inc.
Pascal Leslie
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