The optical transceiver module (AFCT-91FRDDZ) from FIT Optical Interconnect Technology is an Eight-Channel electrical, Four-Channel optical, Pluggable, Single Mode, Fiber-Optic QSFP-DD transceiver for 400 Gigabit Ethernet Applications. This high performance transceiver module is intended for medium-range data communication and interconnect applications.  It converts eight host electrical data lanes in each direction at 53.125Gbps into four optical lanes at 106.25Gbps giving an aggregated bandwidth of 425Gbps, using four laser colors per fiber in a single-mode fiber (SMF) FR4 configuration. It allows communication up to 2 km over a duplex LC connector single mode optical fiber cable.  The pull tab facilitates insertion and extraction of these transceivers in high density configurations.  Each electrical lane operates at 26.5625GBd / 53.125Gbps (PAM4 encoded) and conforms to the IEEE 400GAUI-8 interface with host KP FEC.

These modules are designed to operate over SMF systems using coarse WDM nominal wavelengths of 1271, 1291, 1311 and 1331nm.  The electrical interface uses a 76-contact QSFP-DD edge type connector. The optical interface uses a conventional duplex LC SMF connector. This module incorporates Foxconn Optical Interconnect Technology proven integrated circuit and EML laser technology to provide reliable long life, high performance, and consistent service.

• Features

  • Compliant to IEEE 400GbE electrical specification 802.3bs (Annex 120E 400GAUI-8) with Host FEC 
  • Compliant to “100G Lambda” MSA for 400G FR4 optical variants 
  • 400G link distances up to 2km SMF
  • QSFP-DD CMIS specification compliant
  • Class 1 eye eafety 
  • Pull tab for ease of transceiver insertion and extraction
  • 0ºC to 70ºC case temperature operating range
  • Proven high reliability technology: cooled EML transmitter and PIN detector
  • Hot pluggable QSFP-DD transceiver for ease of installation and servicing
  • Two Wire Serial (TWS) interface with digital monitoring and mask-able interrupts for expanded functionality