Finisar’s FTL4C1QE1C QSFP+transceiver  modules  are designed  for  use  in  40  Gigabit Ethernet  links over  single  mode  fiber.    They  are  compliant  with  the  QSFP+MSA1,2and IEEE  802.3ba  40GBASE-LR43.  Digital  diagnostics  functions  are  available  via  an  I2C interface,  as  specified  by  the  QSFP+ MSA. The  transceiver  is  RoHS  compliant  per Directive 2011/65/EU4and Finisar Application Note AN-20385.
PRODUCT FEATURES
Hot-pluggable QSFP+ form factor
Supports 41.2Gb/s aggregate bit rates
Power dissipation < 3.5W
RoHS-6 compliant
Commercial case temperature range 0°C to 70°C
Single 3.3V power supply
Maximum link length of 10km on Single Mode Fiber (SMF)
Uncooled 4x10Gb/s CWDM transmitter
XLPPI electrical interface
Duplex LC receptacles
Built-in digital diagnostic functions, including Tx/Rx power monitoring
APPLICATIONS
40GBASE-LR4  40G Ethernet