Accelight’s QSFP-DD transceiver module is designed for use in 400 Gigabit Ethernet links over 60m OM3
or 100m OM4 fiber(30m OM3 or 50m OM4 fiber). The module has 8 independent electrical
input/output channels operating at 53.125Gbps per channel. This transceiver consists of two
transmitter/receiver units, with each operating on 850nm wavelength. The transmitter path of the
module incorporates a PAM4 re-timer ASIC with a 4-channel modulator driver and 4 modulated lasers.
On the receiver path, it consists of 4 photodiodes and a 4-channel TIA, along with the PAM4 re-timer.
The electrical interface of the module is compliant with the 400GAUI-8 interface as defined by IEEE
802.3bs, and compliant with QSFP-DD MSA.
