Abstract
A variable step perturb and observe(P&O) algorithm is proposed to realize the automatic bias control of Mach-Zehnder(MZ) modulator. A weak sinusoidal disturbance signal is added to the bias input port of the EOM. The control system based on the principle of phase-locked amplification provides the foundation for the algorithm. The simulation results of variable step and fixed step algorithms show the superiority of variable step algorithm in rapidity and accuracy. The step size of the algorithm is related to the slope, and the difficulty of parameter adjustment is greatly reduced. The operating point can be automatically stabilized at ±Quad points without the initial bias sweep. The experiments show that the drift in one hour of the system with bias control is 88.9% lower than that of the system without bias control.
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
