Split-path receiver for fiber optics application

In an electro-optical transmission line, a receiver for converting light signals to electrical signals comprising,

• a photodiode for receiving light inputs and having an output signal port for providing electrical signals having responses from direct current to a high frequency cut-off,
• a first amplifier circuit channel connected to said output signal port of said photodiode comprised of a wide-bandwidth amplifier for amplifying the high frequency portion of a signal from said output signal port and providing an output,
• a second amplifier circuit channel connected to the output signal port of said photodiode comprised of a low frequency amplifier for amplifying direct current and the low frequency portions of said electrical signals and providing an output,
• a load resistor capacitively coupled to the output of said wide-bandwidth amplifier, and
• an error amplifier coupled with said load resistor and said output of said low frequency amplifier for comparing the high frequency signal with the low frequency signal and providing a feedback signal for correcting direct current and low frequency errors in the output of said wide-bandwidth amplifier.