Thursday, May 10, 2018

All-optical circulator-isolator demonstrated without magnetic bias

An all-optical four port isolator has been demonstrated by the University of Science and Technology of China (USTC), without the use of magnetic fields. For the circulator (see diagram) the signal light incident from the ports 1, 2, 3 and 4, exits from the ports 2, 3, 4 and 1, respectively, constituting a 1-2-3-4-1 circular ...

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