Optical switching apparatus and methods

Details Optical switching apparatus and methods Optical switching apparatus and methods

H - Electricity

04

B

H04B 10/17 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 2353791

An optical switching apparatus in an optical communication network selectively combines and separates series of optical signal samples using OTDM and/or WDM. In upstream communication, the optical switching apparatus optically converts n series of upstream optical signal samples having the upstream optical signal samples carried over channel wavelengths .lambda.1,...,.lambda.n at data rates DR1,...,DR n respectively into a combined series of upstream optical signal samples having the upstream optical signal samples carried over a channel wavelength .lambda.D at a combined data rate DR c which is greater than any one of the data rates DR1,...,DR n. The combined series of upstream optical signal samples is then routed to a destination route. In downstream communication, the optical switching apparatus optically converts a series of downstream optical signal samples carried over a channel wavelength .lambda.T at a data rate DR T into nn series of downstream optical signal samples having the downstream optical signal samples carried over channel wavelengths .lambda.1,...,.lambda.nn-1, .lambda.T at data rates DRT1,...,DRT nn. The nn series of downstream optical signal samples are then routed to nn routes respectively. Related apparatus and methods are also described.

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