| http://www.w3.org/ns/prov#value | - According to another embodiment, the present invention is a method of processing an optical QAM signal, comprising: (A) mixing said optical QAM signal with an optical LO signal to produce first and second digital measures of the QAM signal, wherein the first and second digital measures correspond to different phases of the optical LO signal; and (B) processing the first and second digital measures
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