For example: Agilent E4440A or Anritsu 68369
Amplified Lightwave Converter, 1200nm to 1600nm, DC to 15 GHz BW
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Keysight / Agilent 11982A Overview
A wide-bandwidth, sensitive O/E converter for characterizing lightwave systems and components, the Agilent 11982A combines a PIN photodetector with a low-noise dc-coupled preamplifier to create a general-purpose front end. It covers wavelengths from 1200 to 1600 nm and bandwidths from dc to 15 GHz. With 300 V/W conversion gain and 0.05 percent input optical reflections, it significantly improves the sensitivity of the measurement system. The converter comes with a calibration chart of instrument-specific data for making corrected frequency response measurements.
Features:
- Low pulse aberrations
- High sensitivity
- Time- and frequency-domain measurements