Abstract
In photonics, circulators are three-port nonreciprocal components that allow unidirectional signal transmission from one port to another, in a cyclic rotating fashion. Magnetless circulators based on spatiotemporally modulated networks have recently been proposed as improvements over traditional designs, but these devices have their own shortcomings. The authors show that a suitable arrangement of $N$ nonlinear, time-varying unit cells with a gradient phase shift between their modulation signals can actually yield an effectively linear time-invariant nonreciprocal response. Such a circulator could enable $e.g.$ full-duplex communication, radar, and quantum computing.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
