Subpicosecond optical switching in hyper-terahertz repetition rates is numerically demonstrated using dark resonance based two-photon coherence swapping. The switching time and repetition rate demonstrated are one tenth the population relaxation time T1, and it is a breakthrough in the critical limitation of current technologies of optical switches. This demonstration implies potential applications of ultrafast optical switches to ultrahigh-capacity fiber-optic communications.
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Byoung S. Ham (2001) studied this question.
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