Using Alberto's paper LIGO-T10002-09-R titled "40m RF PDs Upgrade", I calibrated the vertical axis in the bode plots I had obtained for the two PDs ET-3010 and ET-3040.
I am not sure whether the values I have obtained are correct or not(i.e. whether the calibration is correct or not). Kindly review them.
EDIT: Attached the formula used to calculate transimpedance for each data point and the values of other paramaters.
EDIT 2: Updated the plots by changing the conversion for gettin ghte ratio of the transfer functions from 10^(y/10) to 10^(y/20).