G - Physics – 02 – F
Patent
G - Physics
02
F
G02F 2/02 (2006.01) H04B 10/12 (2006.01) H04B 10/155 (2006.01)
Patent
CA 2237669
An optical transmission system has an input light guide and N multipath modulators operated as frequency shifters connected in cascade to receive light from the input light guide and output light along N output light guides where N is 1 or more, wherein the light carried by each ith output light guide, where i = 1, ..., N, is shifted in frequency from light carried by the input light guide by i.omega. m, and where each set of multipath modulators contributes a frequency translation of .omega. m and where the light from each output light guide is modulated and combined with all other modulated output light to form a multiwavelength transmission system, wherein a receiver equipped with similar frequency shifters is configured to generate a number of optical reference signals of frequencies .omega. o+i.omega. m, each reference signal to be added as a separate portion of the received signal so as to perform self-homodyne detection of the information signal associated with each respective modulated frequency.
Telecommunications Research Laboratories
Thompson Lambert Llp
LandOfFree
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