This photodetector module integrates an InGaAs avalanche photodiode (APD) and a trans-impedance amplifier (TIA) inside a compact optical fiber pigtailed package. It provides photon detection with high bandwidth and high optical sensitivity. The Optilab APD-10 is a high sensitivity APD-TIA receiver in a fiber pigtail coupled package. It incorporates an LC/UPC pigtail and a flexible printed circuit (FPC). The signal GND. esigned for space laser communication applications.