Electro-Optic Modulator The transfer function for a Mach-Zehnder intensity modulator is given by T(V) = 1 [1 + cos (+ +

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Electro Optic Modulator The Transfer Function For A Mach Zehnder Intensity Modulator Is Given By T V 1 1 Cos 1 (109.92 KiB) Viewed 32 times

Electro-Optic Modulator The transfer function for a Mach-Zehnder intensity modulator is given by T(V) = 1 [1 + cos (+ + + V)] 1. where do is the built-in phase difference and V is the voltage required for a phase shift. The electrical performance of the modulator is examined by assuming an input signal given by V = V₁ + V₁ sin (2 t) + V₂ sin(t) where VB is DC bias voltage and Va and V₁ are the amplitudes of the signals at frequencies na and b. (The two-tone input provides a simple method to look at nonlinear mixing products.) The nonlinear properties of the modulator can be evaluated by looking at the Taylor series expansion of the modulator transfer function as given by T(V)=(V-V₁)" d²T| n=0 n! dv |v=VB =c₁ + Σc₂ (V-V₁)" n=1 Find the expressions for the first three expansion coefficients: Co, C, and c₂.