Mach-zehnder modulator driver

A method for driving a Mach-Zehnder modulator (MZM), the method comprising:

• supplying a first voltage and a second voltage to a first driver;
• generating a first two complimentary outputs respectively to a first N-electrode of a first branch of the MZM and a second N-electrode of a second branch of the MZM to yield a first peak-to-peak differential voltage;
• supplying a third voltage and a fourth voltage to a second driver;
• generating a second two complimentary outputs respectively to a first P-electrode of the first branch and a second P-electrode of the second branch to yield a second peak-to-peak differential voltage, a difference between the third voltage and the fourth voltage being equal to a difference between the first voltage and the second voltage, and an offset being given to the third voltage relative to the first voltage;
• and
• setting both the first N-electrode and the second N-electrode terminated at the first voltage and both the first P-electrode and the second P-electrode terminated at the third voltage, yet making the first peak-to-peak differential voltage to be equal to the second peak-to-peak differential voltage.