GaAs Version

Model 1591NF utilizes a GaAs diode providing wavelength coverage from 450 to 870 nm for visible applications.

InGaAs Version

The 1592NF utilizes InGaAs providing coverage from 950 to 1630 nm for NIR applications.

62.5 µm Optical Fiber Input

These photoreceivers come standard with multimode 62.5 micron multimode fiber input, and a convenient DC-bias monitor that has a transimpedance gain of 1 mV/µA and a bandwidth of 50 kHz. Utilizing the FC connector, users simplify alignment due to the small PIN diode design.

Ultra-Clean Pulse Response

The ultra-clean pulse response along with the DC-coupling of the 159XNF series make them well-suited for time-domain characterizations of 2.5-Gbit/s components and extinction-ratio measurements across popular protocols.

Switchable DC-Coupled or AC-Coupled output

For those applications that cannot tolerate DC coupling, there is a convenient switch to convert the Photoreceiver output from DC- to AC-coupled—while still preserving the same overall photoreceiver performance.


These photoreceivers are great for characterizing 2.5-Gbit/s components, including BER testing and generating eye diagrams as shown at 2.5 Gbps bit rates. They also work well in heterodyne experiments, and characterizing the frequency and/or time responses of pulsed lasers, modulators, transmitters, and other lightwave components.