Finisar’s FTL4S1QE1C QSFP + transceiver modules are designed for use in 40 Gigabit
Ethernet links over duplex multimode fiber. They are compliant with the QSFP + MSA1,2
and IEEE 802.3ba XLPPI electrical interface3. Digital diagnostics functions are available
via an I2C interface, as specified by the QSFP + MSA. The optical transceiver is compliant per the RoHS Directive 2011/65 / EU. See Finisar Application Note AN-2038 for more details.
PRODUCT FEATURES
• Hot-pluggable QSFP+ form factor
• 240m operation over duplex OM3
MMF (350m over OM4, 440m
over OM5)
• Supports 41.2 Gb/s aggregate bit
rates
• Uncooled 4x10Gb/s SWDM
transmitter
• Built-in SWDM mux and demux
• Power dissipation < 2.5W
• Commercial case temperature
range 0°C to 70°C
• XLPPI electrical interface
• Duplex LC receptacles
• Built-in digital diagnostic
functions, including Tx/Rx power
monitoring
• RoHS-6 compliant
1
APPLICATIONS
• 40G Ethernet over duplex MMF
• Allows upgrades from 10GBASE-SR
without changing fiber plant
