The NR8500 series is an InGaAs avalanche photodiode (APD) coaxial module with optical fiber pigtail from NEC. This module is designed for long wavelength optical communication systems and is ideal as a reciever for Synchronous Digital Hierarchy (SDH) system, STM-4 and STM-1, ITU-T recommendations.
The document describes the NEC NR8500 series, an InGaAs avalanche photo diode (APD) coaxial module with an optical fiber pigtail. It is specifically designed for long wavelength optical communication systems and serves as a receiver for Synchronous Digital Hierarchy (SDH) systems, including STM-4 and STM-1 according to ITU-T recommendations.
The datasheet provides detailed electro-optical characteristics, absolute maximum ratings, typical performance curves regarding quantum efficiency and dark current, outline dimensions for various flange types, ordering information, and optical fiber specifications. It also includes compliance information regarding EU Directives (RoHS).
| Sensitivity at 1310 nm | 0.94 A/W |
|---|---|
| Cut-off Frequency (fc) | 1.5 GHz |
| Operating Case Temperature | -40 to +85 °C |
| Reverse Breakdown Voltage (Min) | 50 V |
It is ideal as a receiver for Synchronous Digital Hierarchy (SDH) system, STM-4 and STM-1.
The minimum fiber length is 1000 mm.