Working principle of MZI optical phase modulator
As explained in the introduction, a Mach-Zehnder modulator is based on a Mach-Zehnder interferometer (MZI), which splits the light in two branches and then recombines them by interference. In each branch, a heater-based phase shifter is placed to ensure the MZM is biased at quadrature. Here VM is the differential voltage applied between the two input ports and V is the voltage necessary for phase shift, also called the switching voltage. modulates an optical signal depending on electrical signal electrical, optical, unidirectional Defines the name of the element.
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