The rapid development of the Internet industry, mobile Internet access traffic growth, data traffic demand within the data center is doubled every year, resulting in increasing demand for data transmission to the development of high-speed rate, this article introduces the 200G QSFP-DD SR8 is one of the high-speed module.

Figure：400G QSFP-DD

200g optical module mainly QSFP-DD and QSFP56 two package types, QSFP-DD which dd refers to doubledensity, that is, the original 4-channel interface to increase one line to 8 channels, compatible with the QSFP, which is one of the advantages of the QSFP-DD. 200G QSFP-DD is a short-distance connectivity solution for data centers, the interface type is MPO interface. The interface type is MPO interface, 24 cores, the wavelength is the conventional multimode wavelength that is 850nm, the single-channel rate of 25G, in the OM3 cable transmission of 70m, in the OM4 cable transmission of 100m.

Product Features

• Supports 206.25Gb/s(8x NRZ 25.78125Gbps) aggregate bit rate

• Reach up to 70m (OM3) or 100m (OM4) over MMF

• 8x 850nm VCSEL array and PIN photo-detector array

• Internal CDR circuits on both receiver and transmitter channels

• Single MPO-16 receptacle

• Compliant with QSFP-DD MSA, IEEE 802.3bm 100GBASE-SR4 and CMIS

• Built-in digital diagnostic functions

• Case operating temperature range:0°C to +70°C

• Maximum Power dissipation < 4 W

• 3.3V power supply voltage

• RoHS Compliant

• Class 1 Laser Products

The 200G QSFP-DD SR8 is a high-performance optical module for short-haul multi-channel data communication interconnect applications. It integrates 8 data channels in 8x25.78125Gbps bandwidth.The advantages of 200G QSFP-DD are 1U panel can do 36*200G/400G density, and it is QSFP forward and backward compatible, compatible with existing QSFP28 optical modules and AOC/DAC high-speed cables, etc.

Additional Learning Hub Resources 

QSFP-DD Optical Module Wiki

What is the difference between QSFP DD and QSFP28 form factor

What are the different types of QSFP 100G