100G QSFP28 SR BIDI Transceiver

Part # : WST-QS28-SRB-C

Category : ,



  • Aggregate bandwidth of > 100Gbps
  • Supports 25.78125Gb/s, 10.3125Gb/s per channel
  • Dual wavelength VCSEL bi-directional
  • optical interface, PAM4 2 × 50-Gb/s 850nm/900 nm
  • Capable of over 70m transmission on OM3 Multimode Fiber (MMF)and 100m on OM4 MMF
  • Single +3.3V power supply operating
  • With digital diagnostic functions
  • Temperature range 0°C to 70°C


This product converts the 4-channel of 100Gbps aggregated NRZ electrical input data into one channel of 50Gbaud PAM4 optical signal (light) on 850nm/900nm center wavelength through a DSP based gearbox by VCSEL bi-directional. The light propagates out of the transmitter into an MMF fiber. The receiver module accepts the 50Gbaud PAM4 optical signal input, and converts it into a 50Gbaud PAM4 electrical signal via a linear amplifier. And then convert the 50Gbaud PAM4 signal into 4 channels of 25Gbps NRZ signals. Figure “Transceiver Functional Diagram” shows the functional block diagram of this product.


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