home products Optical Transceivers QSFP+ Transceivers 40GBASE-LR4 2km Gen2 Lite QSFP+ Transceiver
40GBASE-LR4 2km Gen2 Lite QSFP+ Transceiver
Coherent | Finisar

40GBASE-LR4 2km Gen2 Lite QSFP+ Transceiver

Manufacturer: Coherent | Finisar

Datasheet: FTL4C1QL1C

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Product Detail

Replacement model: FTL4C1QL2C
Finisar’s FTL4C1QL2C QSFP+ optical transceiver modules are designed for use in 40 Gigabit Ethernet links over single mode fiber. They are compliant with the QSFP+ MSA and are compatible with IEEE 802.3ba 40GBASE-LR4 up to 2 km. 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.

40GBASE-LR4 2km Gen2 Lite QSFP+ Transceiver
XCVR, QSFP, 2km, 40GE Lite, 4x10G CWDM DFB, PIN, Limiting, XLPPI electrical interface, LC, ROHS, 3.3V, 3.5W, 0/70°C operation, Gen2
Coherent | Finisar

Features & Benefits

  • Replacement model: FTL4C1QL2C
  • Designed for use in 40 Gigabit Ethernet links over single mode fiber
  • Compliant with the QSFP+ MSA
  • Compatible with IEEE 802.3ba 40GBASE-LR4 up to 2 km
  • Digital diagnostics functions available via an I2C interface

Technical Specifications

Data Rate (max):41.2 Gb/s
Form FactorQSFP+
High End Case Temperature (°C)0°C
Low End Case Temperature (°C)70°C
Max Distance2km
TransmitterDuplex SMF
Voltage Supply (V):3.3
Wavelength1310nm Band


Coherent | Finisar

Coherent Corp. is a global leader in materials, networking, and lasers for the industrial, communications, electronics, and instrumentation markets. The company is headquartered in Saxonburg, Pennsylvania. It was founded in 1971 to manufacture high-quality materials and optics for industrial lasers. Today, the company operates in more than 20 countries around the world. Coherent is focused on delivering innovations that fuel market megatrends while pursuing our mission of enabling the world to be safer, healthier, closer, and more efficient. Coherent empowers market innovators to define the future through breakthrough technologies, from materials to systems.

Learn about Coherent | Finisar

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