The Cisco CWDM-SFP-1590 Compatible SFP transceiver supports up to 40km link lengths over single-mode fiber (SMF) via an LC duplex connector. Each SFP transceiver module is individually tested to be used on a series of Cisco switches, routers, servers, network interface card (NICs) etc. The. Enjoy reliable connections to your installations with this 10G CWDM Single-Mode Optical Module from Ubiquiti. Features • Flexible packaging. Lumentum 1480/1550+1590 nm filter wavelength division multiplexers (WDMs) use interference filter technology to separate or combine pump laser and optical signals. With wide bandwidth, low insertion, high isolation, and low temperature-dependent loss, they are ideal for use in optical amplifier and. Operating temperature for the DIL, DILRAD and BTF 14-pins case T with TEC is defined for internal temperature stabilization at Tst = 25°C that corresponds to thermistor resistance Rt = 10 kOhm.