FTLC1154RDPL Finisar Coherent Compatible 100GBASE-LR4 QSFP28 10km Module

EdgeOptic's FTLC1154RDPL compatible is a Finisar/Coherent-coded 100GBASE-LR4 QSFP28 transceiver built on our 100G-QSFP28-10 platform. FTLC1154RDPL is the Finisar (now Coherent) part number for the MSA-compliant 100GBASE-LR4 QSFP28 module, not locked to any specific equipment vendor. EdgeOptic's compatible carries Finisar/Coherent vendor identification in EEPROM and is functionally and optically equivalent to the original.

The module transmits 100GbE over duplex single-mode fiber using LAN WDM technology. Four wavelength channels at 1295.56, 1300.05, 1304.58, and 1309.14 nm each carry 25.78125 Gbps with NRZ modulation, for an aggregate line rate of 103.125 Gbps. The transmitter uses an EML (Electro-absorption Modulated Laser) array; the receiver uses a PIN photodiode array. The four channels are multiplexed within the 1310 nm window and carried over a single duplex LC fiber pair.

Optical link budget is 6.3 dB per IEEE 802.3ba, which supports up to 10 km over OS2 (G.652.D) single-mode fiber. Per-lane transmit power is -4.3 dBm to +4.5 dBm; per-lane receiver sensitivity is -10.6 dBm at BER 5x10-5 pre-FEC. Actual reach depends on fiber attenuation and connector losses in the specific plant. The dual LC/UPC connector interface accepts standard SMF patch cords and structured cabling.

Digital diagnostic monitoring (DDM/DOM) reports per-lane transmitted and received optical power, module temperature, laser bias current, and supply voltage through the SFF-8636 management interface. The module has no internal FEC engine and is fully transparent to host-side RS-FEC (IEEE 802.3bj Clause 91) running in the switch ASIC. The module conforms to the QSFP28 MSA (SFF-8665) and presents a CAUI-4 host electrical interface (4x25G NRZ lanes per IEEE 802.3bj Clause 83). Operating temperature range is 0 to 70 C. Typical power consumption is 3.5 W; the module is designed within the QSFP28 Class 4 cage budget (4.5 W maximum per SFF-8665).

Because FTLC1154RDPL is a Finisar/Coherent multi-vendor module rather than a vendor-specific OEM optic, EdgeOptic's compatible carries Finisar/Coherent EEPROM identification rather than a switch vendor's coding. Most equipment, including Arista, Dell, Intel, Juniper, and Nvidia QSFP28 ports, accepts the Finisar-coded module without additional configuration. Cisco NX-OS and certain Huawei VRP releases may still require the service unsupported-transceiver command (or the equivalent VRP setting) to allow third-party-coded optics, this is a property of the host platform's third-party policy, not a defect in the module. EdgeOptic can program the module with vendor-specific coding (Cisco, Juniper, Arista, Huawei, and others) on request to remove that step.

The transceiver meets IEEE 802.3ba Clause 88 100GBASE-LR4 requirements and conforms to the QSFP28 MSA (SFF-8665). It is CE/RoHS-6 certified and compliant with Class 1 FDA and IEC 60825-1 laser safety standards. Optical parameters and connector inspection are performed on every unit before shipment. For technical consultation, alternative vendor coding, or volume pricing, contact our sales team.