FTLC1154RDPL

• 100GBASE-LR4 interface, 100G Ethernet Compliant
• QSFP28 Form Factor
• 10 Km Reach Over Single-Mode Fiber
• 103.1 Gb/S Maximum Data Rate
• 1310 Nm wavelength, DFB Laser transmitter, PIN Receiver
• 2-Fiber Duplex LC Connector
• 3.3 V supply, Digital Diagnostic Monitoring
• 0 C to 70 C Operating Temperature range; Tray packaging, 12 per Tray

The Finisar Corporation FTLC1154RDPL is a 100GBASE-LR4 QSFP28 optical transceiver for single-mode fiber, supporting link distances up to 10 km at a maximum data rate of 103.1 Gb/s. It transmits at 1310 nm using a distributed feedback (DFB) laser and receives with a PIN photodiode, terminating in a 2-fiber duplex LC connector. The FTLC1154RDPL runs from a 3.3 V supply, is 100G Ethernet compliant, provides digital diagnostic monitoring, and operates from 0 C to 70 C. LR4 modules multiplex four 25G lanes onto four closely spaced wavelengths in the 1310 nm band so a single fiber pair carries the full 100G link.

100GBASE-LR4 QSFP28 modules provide the 10 km single-mode links that connect data center buildings and halls, aggregate leaf-spine fabrics across long internal runs, feed metro and campus backbones, and terminate 100G uplinks on routers and core switches. LR4 is chosen over shorter-reach SR4 or PSM4 options when the span exceeds a few hundred meters and over ER4 when 10 km is sufficient, since it uses only a single duplex fiber pair rather than parallel ribbon. Digital diagnostic monitoring lets network operations read optical power and temperature per module for link health and fault isolation. Typical buyers are data center network engineers, carriers and service providers, cloud infrastructure teams, and switch and router OEMs.