LT3571 APD Bias circuit

Hi All

I want to use LT3571 as APD bias circuit for fiber sensor.

I understand the LT3571 but where can I get output signal of APD.

Normal APD operation is convertion input light signal to output current signal.

Where can I get the output current signal within LT3571 pin ?

Is it MON pin(16) ?

Please answer to me

Thank you