BCP 320A - 3 GHz O/E Receiver. See user manual and specification at pdf link below.

Key Features
Detector bandwidth DC 3 GHz
High O/E gain (2500 V/W)
Limiting amplifier included
No gain or offset adjustments needed
Applications

O/E conversion for transmitter testing

SPECIFICATIONS

O/E Detector Section
High Power Optical Input: 1.0 mW (0 dBm) maximum
Low Power Optical Input: 200 µW (-7 dBm) maximum
Bandwidth (-3 dB): DC to 2.5 GHz minimum; 3.0 GHz typical Maximum Conversion Gain: 2000 V/W minimum; 2500 V/W typical
Wavelength: 1200 (or 1100) to 1600 nm; InGaAs APD detector
Fiber Interface: 9/125 µm single-mode
Optical Input Connector: Diamond universal screw-on adapter
Input Optical Return Loss: 30 dB minimum, 1310/1550 nm
Polarity: Non-inverting (high input = high output)

Limiting Amplifier Section
Limiting Amplifier Input: 1.0 V peak-to-peak (pp) maximum
Bit Rate: 0.01 to 2.5 Gb/s minimum; 3.0 Gb/s typical
Gain: 24 dB minimum; 26 dB typical
Rise/fall times: 150 ps maximum, 20 to 80%, when in limiting region
with 50 ohm termination
Return Loss (50 ohm)
Input: 10 dB minimum, frequency < 2 GHz
Output: 10 dB minimum, frequency < 2 GHz
Output Amplitude (when in limiting region with 50 ohm termination):
0.45 Vpp minimum; 0.60 Vpp typical
Electrical Input Voltage: 100 to 240 V AC, 50 to 60 Hz
Electric Input Connectors: Female, SMA