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+ MSA and IEEE 802.3ba 40GBASE-LR42. 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..
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Model |
FTL4C1QE1C |
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Description |
FTL4C1QE1C Finisar 40GBASE-LR4 40Gbps QSFP+ Fiber Transceiver 40 G 10 Km Optic Fiber |
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Temperature Range: |
Standard 0°-70°C |
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Connectors: |
Double LC |
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Tx Wavelength Bandwidth: |
4 WDM Seperated 1310nm Lanes (13 nm (1271, 1291, 1311, 1331)) |
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Rx Wavelength Bandwidth: |
4 WDM Seperated 1310nm Lanes (13nm (1271, 1291, 1311, 1331)) |
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Minimum Transmitting Power: |
Each Lane -4 dB |
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Maximum Transmitting Power: |
Each Lane 2.3 dB |
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Receiver Sensitivity: |
Each Lane -13.7 dBm |

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FTL4C1QE1C Specification |
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Model |
FTL4C1QE1C |
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Description |
FTL4C1QE1C Finisar 40GBASE-LR4 40Gbps QSFP+ Fiber Transceiver 40 G 10 Km Optic Fiber |
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Media Type: |
Single-Mode Fiber (SMF) |
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TX Wavelength: |
1310 nm. |
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Transceiver Type: |
QSFP |
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RX Wavelength: |
1310 nm. |
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Minimum Optical Budget: |
9.7 dB |
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Maximum Distance: |
10km |
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Supported Data Rate: |
39.81 – 44.8 Gbps |
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Supported Applications: |
40G Ethernet (41.25Gbps), STM-256 (39.81 Gbps), OTU3 (43.01Gbps), OTU3e2 (44.58Gbps) |
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DDM/DOM: |
Supported |
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Temperature Range: |
Standard 0°-70°C |
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Connectors: |
Double LC |
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Tx Wavelength Bandwidth: |
4 WDM Seperated 1310nm Lanes (13 nm (1271, 1291, 1311, 1331)) |
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Rx Wavelength Bandwidth: |
4 WDM Seperated 1310nm Lanes (13nm (1271, 1291, 1311, 1331)) |
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Minimum Transmitting Power: |
Each Lane -4 dB |
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Maximum Transmitting Power: |
Each Lane 2.3 dB |
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Receiver Sensitivity: |
Each Lane -13.7 dBm |
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Receiver Overload: |
Each Lane 2.3 dBm |
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Transmitter Type: |
DFB Laser |
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Receiver Type: |
PIN photodiode |
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Power: |
+3.3V single power supply |
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Chipset: |
MAXIM, MINDSPEED, SEMTECH, UX |
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Compliance: |
802.3ba 40GBASE-LR4, CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, INF-8438i, QSFP+ MSA, RoHS, SFF-8436 |