As seen in Fig. 2, the simulation achieves 12.3dB of isolation at 1550nm, which is close to the experimental observations reported in .
The application note demonstrated design of an active isolator using traditional TW-MZM. The simulation and reported experimental observations have an excellent agreement. Learn more about OptSim Circuit.
1. Po Dong, “Travelling-wave Mach-Zehnder modulators functioning as optical isolators,” Optics Express, vol. 23, no. 8, April 2015, pg. 10498-10505.