The invention provides a four-port
optical router based on micro-ring resonant optical switches. The four-port
optical router comprises six crossed waveguides and four micro-ring resonant optical switches, wherein the Add end of the first micro-ring resonant
optical switch serves as a first input port of the
router, and the Drop end of the first micro-ring resonant
optical switch serves as a second output port of the
router; the Drop end of the second micro-ring resonant
optical switch serves as a second input port of the
router, and the Add end of the second micro-ring resonant optical switch serves as a first output port of the router; the Input end of the third micro-ring resonant optical switch serves as a third output port of the router, and the Drop end of the third micro-ring resonant optical switch serves as a fourth output port of the router; the Input end of the fourth micro-ring resonant optical switch serves as a third input port of the router, and the Drop end of the fourth micro-ring resonant optical switch serves as a fourth input port of the router. According to the router, the quantity of the micro-ring resonant optical switches is reduced and optical losses are reduced; the four-port
optical router is easy for large-scale integration, lower in
power consumption, small in volume, less in time
delay and rapid in speed, and plays an important role in a high-performance
processing unit for
photon communication.