QSFP28-100G-SR1.2 Single Rate 100G QSFP28 BIDI 850nm & 900nm 100m LC MMF DDM Optical Transceiver
F-tone QSFP28-100G-SR1.2 QSFP 100G Bi-Directional Optical Transceiver supports 100m transmission over SMF with duplex LC connectors, which is with DDM function.

