FTLX1871M3BCL Finisar Compatible 10GBASE-ZR 80km SFP+ with CDR

EdgeOptic's FTLX1871M3BCL compatible is a Finisar-coded version of the EdgeOptic 10G-SFP-80 multi-vendor 10GBASE-ZR transceiver. It is a 1550 nm SFP+ optic built to drop in for the Finisar FTLX1871M3BCL, carrying multiple vendor codes from a single universal part. The module reaches 80 km over duplex single-mode fiber on a 23 dB link budget.

The transmitter is a 1550 nm cooled EML laser with output between 0 and +5 dBm. The receiver uses an APD photodiode rated to −24 dBm sensitivity, with chromatic dispersion tolerance of 1600 ps/nm. The optic supports a 1.25 to 11.32 Gbps rate range covering 10G Ethernet ZR, Gigabit Ethernet, 1G through 10G Fibre Channel, SONET OC-192, and SDH STM-64 at 9.95 Gbps. DDM/DOM diagnostics report live temperature, voltage, bias current, and optical power. The module runs on +3.3V and connects through a duplex LC interface. Typical deployments are SONET, SDH, and Ethernet transport links over single-mode fiber beyond the 40 km reach of an ER optic.

The FTLX1871M3BCL is the internal-CDR variant of the Finisar FTLX1871 series. Per the Finisar datasheet, the original part carries clock and data recovery on both the transmitter and receiver sides, which lets it meet SONET OC-192 and SDH STM-64 jitter requirements without a host-side CDR. The no-CDR FTLX1871D3BCL relies on the host for that function. Finisar rates the M3BCL at a standard −5 to +70 °C case temperature. The EdgeOptic compatible is built to the 10G-SFP-80 specification with a 0 to 70 °C operating range. For deployments with strict CDR jitter requirements, contact our sales team to confirm the build matches the requirement.

The module is CE marked, Class 1 laser safe per IEC 60825-1 and FDA, RoHS compliant, and built to the SFF-8431 SFP+ MSA. Backed by 15+ years of EdgeOptic compatibility engineering across vendor optical platforms. Ships next business day from EU stock with a lifetime warranty. For project sizing or variant questions, contact our sales team.