Re:Bandwidth enhancement? (Score 1)

Bad news rf fans, AM, FM, PM, QAM, and noise modulation technologies as well as Crosscorrelation and autocorrelation are all available in the optical domain. The developement of these techniques over the past thirty to fourty years is what a great deal of the research in quantum optics and electro-optics fields has been all about. Did I mention heterdyne and homodyne beam detection or frequency mixing or doubling?