Finisar FTL4C1QE3L Compatible 40GBASE-LR4 Gen3 Lite QSFP+ Transceiver
Finisar compatible FTL4C1QE3L - Key Features
- Compatibility: Finisar
- Media Type: Single-Mode Fiber (SMF)
- Connector: Double LC/UPC
- Fiber Count: Duplex
- Maximum Distance: 10 km
- Average Link Budget: 6.6 dB
- Tx Wavelength: CWDM 4 Ch
- Supported Data Rate: 44.8 Gbps
- DDM/DOM: Supported
- Temperature Range: Standard 0°-70°C
Finisar FTL4C1QE3L Price
Finisar compatible FTL4C1QE3L Specifications
Form Factor | QSFP+ |
Modulation | NRZ (Non-Return to Zero) |
Media Type | Single-Mode Fiber (SMF) |
Connector | Double LC/UPC |
Fiber Count | Duplex |
Maximum Distance | 10 km |
Average Link Budget | 6.6 dB |
TX Wavelength | 4-channel CWDM (1271/1291/1311/1331 nm) |
RX Wavelength | 4-channel CWDM (1271/1291/1311/1331 nm) |
Supported Data Rate | 44.8 Gbps |
Supported Ethernet Applications | 40G Ethernet (41.25Gbps) |
Optical Transport Network (OTN) Applications | OTU3 (43.01Gbps), OTU3e2 (44.58Gbps) |
SDH/SONET Standards | STM-256 (39.81 Gbps) |
DDM/DOM | Supported |
Transmitter Type | DFB Laser |
Tx Wave Bandwidth | 4 WDM Seperated 1310nm Lanes (13 nm (1271, 1291, 1311, 1331)) |
Average Launch Power (Min) Each Lane | -6 dBm |
Average Launch Power (Max) Each Lane | 3 dBm |
Receiver Type | PIN photodiode |
Average Receiver Sensitivity (Min) Each Lane | -12.6 dBm |
Average Receiver Sensitivity (Max) Each Lane | 3 dBm |
Receiver Overload | 3 dBm |
Temperature Range | Standard 0°-70°C |
Storage Temperature | -40° to 85°C |
Relative Humidity | 5 to 85% |
Power | +3.3V single power supply |
Compliance | IEEE 802.3ba, CE, Class 1 FDA and IEC60825-1 Laser Safety Compliant, INF-8438i, QSFP+ MSA, RoHS, SFF-8436 |
Finisar compatible FTL4C1QE3L Datasheet
v2Complete technical specifications and product details
Finisar compatible FTL4C1QE3L Description
EdgeOptic's FTL4C1QE3L compatible is a Finisar (now part of Coherent) coded version of the EdgeOptic 40G-QSFP-10 multi-vendor 40GBASE-LR4 transceiver. The QE3L is the third-generation Lite-grade member of the line, an Ethernet-only 40GBASE-LR4 QSFP+ optic intended for controlled data-center environments.
Four uncooled DFB lasers transmit on CWDM wavelengths of 1271, 1291, 1311 and 1331 nm, combined onto a single duplex single-mode pair through an LC/UPC connector for distances up to 10 km. PIN photodiode receivers recover the lanes at −12.6 dBm sensitivity per lane, with overload at +3 dBm. Per-lane launch power runs between −6 and +3 dBm, giving an average link budget of 6.6 dB. The aggregate rate is 41.25 Gb/s NRZ to IEEE 802.3ba Clause 87 for 40GBASE-LR4.
The L suffix in the QE3L ordering code indicates a Lite-grade temperature variant, with an operating range narrower than the commercial QE3C; verify the exact Lite operating range against the Coherent/Finisar FTL4C1QE3L datasheet before deployment in temperature-sensitive locations. The EdgeOptic compatible is built to the universal commercial 0 to 70 °C range. This is an Ethernet-only module and does not carry the OTU3 transport rates of the multirate FTL4C1QM series. It follows the QSFP+ MSA and SFF-8436 and reports diagnostics over the standard DOM/DDM I2C interface.
The module works with switches and routers that accept 40GBASE-LR4 QSFP+ optics; verify the exact part against the platform's transceiver compatibility table before deployment. Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms, the module ships next business day from EU stock with a lifetime warranty. For volume pricing or coding questions, contact our sales team.
Frequently Asked Questions
What is the difference between the FTL4C1QE3L and FTL4C1QE3C?
Both are third-generation 40GBASE-LR4 10 km QSFP+ optics; the distinction is the OEM temperature grade. The L suffix indicates a Lite-grade variant with a narrower temperature window than the commercial QE3C; verify the exact range in the Coherent/Finisar FTL4C1QE3L datasheet before deployment in temperature-sensitive locations. EdgeOptic's compatible is built to the commercial 0 to 70 °C range, so it covers the Lite deployment window. Match both ends of the link to the same 40GBASE-LR4 specification during commissioning.