100G PAM4 QSFP28 is a pluggable, DWDM, fiber-optic transceiver for 100 Gigabit Ethernet (100GbE) applications.
This module is designed for the data centers to interconnect, which requires high fiber capacity for links up to 80 km.
The optical interface utilizes two DWDM wavelengths on a 50 GHz grid. PAM4 modulation format is used to increase capacity enabling 50 Gb/s on each wavelength. Integrated, high-gain FEC (Forward Error Correction) and advanced Rx ADC/DSP technology enables optical reaches up to 80 km over an amplified, DWDM line system. The optical signals are transmitted and receive from the module by standard duplex SMF and LC receptacles.
Electrical signals are transmitted and received from the host via a standard, 38-pin connector described in the QSFP28 MSA (SFF-8679). The electrical interface is CAUI-4 compliant (IEEE P802.3bm Annex 83E), splitting the 100 Gb/s signals into four, parallel, 25 Gb/s NRZ streams.
This module incorporates Inphi’s innovative, silicon photonics circuit, arrayed modulation driver,arrayed TIA and advanced DSP technology to provide high performance in a miniature, pluggable package.

Features

-Compatible with the QSFP28 MSA as described in SFF-8665
-100Gb/s over 2 wavelengths on a 50 GHz DWDM grid enabling 4Tb/s over a single fiber
-PAM4 modulation format enabling 56Gb/s on a single wavelength
-80km reach over a duplex, SMF
-Integrated, high-gain FEC encode / decode
-Advanced ADC/DSP receiver technology
-Optical and host loopback functionality
-Standard CAUI4 electrical interface

Parameter Name	Parameter Value
Network	gigabit Ethernet for fiber optics
Number of channels	multi-channel
Other characteristics	data compact QSFP