Finisar FTL4C1QM1C Compatible 40GBASE-LR4 + OTU3 Multirate QSFP+ Transceiver
Finisar compatible FTL4C1QM1C - 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 FTL4C1QM1C Price
Finisar compatible FTL4C1QM1C 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 FTL4C1QM1C Datasheet
v2Complete technical specifications and product details
Finisar compatible FTL4C1QM1C Description
EdgeOptic's FTL4C1QM1C compatible is a Finisar (now part of Coherent) coded version of the EdgeOptic 40G-QSFP-10 multi-vendor 40GBASE-LR4 transceiver. The M in QM1C marks it as a multirate part: alongside 40GBASE-LR4 Ethernet it carries OTU3-class OTN transport, which sets it apart from the Ethernet-only QE members of the line. It is the first-generation multirate module in this group.
The optics use four uncooled DFB lasers on CWDM wavelengths of 1271, 1291, 1311 and 1331 nm, multiplexed onto one duplex single-mode pair over an LC/UPC connector for reach 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, for an average link budget of 6.6 dB. At 40 Gigabit Ethernet the module signals at 41.25 Gb/s NRZ to IEEE 802.3ba Clause 87 for 40GBASE-LR4.
In OTN deployments the FTL4C1QM1C also supports OTU3 at 43.01 Gb/s, along with the OTU3e1 and OTU3e2 (up to 44.6 Gb/s) overclocked rates and STM-256 / OC-768 at 39.81 Gb/s, per the Finisar product specification. The optical interface is the same 4-lane CWDM assembly for both Ethernet and OTN service; confirm the required line rate and framing against the transport platform's transceiver guide before deployment.
Mechanically and electrically the module follows the QSFP+ MSA, SFF-8436 and INF-8438i, operates across the commercial 0 to 70 °C case temperature range, and reports diagnostics through the standard DOM/DDM I2C memory map.
The module works with equipment that accepts 40GBASE-LR4 or OTU3 QSFP+ interfaces; 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 FTL4C1QM1C and FTL4C1QE1C?
The QM1C is a multirate module: it carries 40GBASE-LR4 Ethernet plus OTU3-class OTN transport on a single optical interface. The QE1C is Ethernet-only and carries 40GBASE-LR4 with no OTN capability. Both share the same 10 km CWDM optics over single-mode fiber. Order the QM1C when the link needs OTU3 framing; the QE1C is the correct choice for plain 40 Gigabit Ethernet.
What OTN rates does the FTL4C1QM1C support?
Per the Finisar product specification, the module supports OTU3 at 43.01 Gb/s, the OTU3e1 and OTU3e2 overclocked rates up to roughly 44.6 Gb/s, and STM-256 / OC-768 at 39.81 Gb/s, in addition to 40GBASE-LR4 Ethernet at 41.25 Gb/s. Confirm the exact rate and OTN framing the platform expects against its transceiver guide before deployment.