QSFP28 OPTEC, 100G, MM 2xLC, 100m, TX850/900nm, DDM (QSFP28-100GBASE-SR-BiDi)

Transceiver operating on a pair of multimode optical fibers, providing two optical communication channels. The module enables achieving a distance of 150m when using OM5 multimode optical cable, 100m when using OM4 cable or 70m when using OM3 cable. It uses VCSEL laser transmitters and PIN photodiodes. The transceiver combines four electrical data lanes in each direction at a speed of 25 Gbps (NRZ modulation), which are converted into PAM4 2x50 Gbps modulation lines, providing an aggregated bandwidth of 100 Gbps per line. The module supports DDM/DOM optical diagnostics, providing information about current operating conditions. Additionally, the module supports FEC (Forward Error Correction), which helps the receiving side detect and correct errors and improve the overall link quality. It operates in a standard temperature range of 0°-70°C and features a dual LC connector. It provides data transmission speeds of 41.25 - 103.125 Gb/s in solutions such as 100G Ethernet (103.125 Gb/s) and 40G Ethernet (41.25 Gb/s).

Port	2x 100 Gbps LC MM
TX wavelength	Ch1: 850nm Ch2: 900nm (2 wavelengths)
RX wavelength	Ch1: 900nm Ch2: 850nm (2 wavelengths)
Port range	max. 150m (OM5) max. 100m (OM4) max. 70m (OM3)
Port cabling	50/125, 62.5/125, 100/140 µm
Digital Diagnostics Monitoring (DDM*)	yes
Module type	QSFP28
Warranty period	36 months

DDM - Digital Diagnostic Monitor (compatible with Cisco DOM – Digital Optical Monitoring). This function enables monitoring of key module operating parameters such as transmitted optical signal power, received optical signal power, operating temperature, supply voltage, and laser current.

Using DDM helps prevent failures and speeds up the diagnosis of problems with the optical network. Monitoring of operating parameters is only possible with devices equipped with a digital diagnostics readout function.