The impedance matching with EOM is now done using a 50ohm transformer, T-626-X65+. I am not using the opamp anymore, since we can't use upto 10Vp-p from moku (amplitude 5V).

The L = 13.6mH, and with EOM around 12pF, the resonant frequency for ideal circuit is around 0.39MHz. 

The circuit was supplied 10vp-p with moku and the spectrum of PD was read using moku. From the measurement it seems the resonant frequency is around 0.335MHz.

Fig 1: Spectrum of PD with laser off, and eom voltage off

Fig 2: Specturm of PD with laser on, eom voltage off

Fig 3: Spectrum of PD with laser on, eom voltage on.

Zoomed around the resonant freq to have better resolution of the peak. Then averaged 20 frames. 

Fig 4: Spectrum of PD with laser off, and eom voltage off

Fig 5: Specturm of PD with laser on, eom voltage off

Fig 6: Spectrum of PD with laser on, eom voltage on.