GIGALIGHT Launches the Industry’s First 200G QSFP56 ER4 Optical Transceiver for Metro DCI

Shenzhen, China, July 8, 2021 − Under the context of 5G network, faster broadband speed, longer transmission distance and lower cost are the directions that data center and metro optical transmission network users heading up to. In order to meet market demand, GIGALIGHT recently released the industry’s first 200G QSFP56 ER4 optical transceiver. It adopts the mainstream 4-lane WDM optical engine architecture which integrates 4-channel refrigerated EML lasers and APD optical detectors, supports 200GE (4X53 Gbps) and OTN protocols, can perfectly adapt to 200G metro DCI long reach interconnection and 5G backhaul.

Picture 1: GIGALIGHT 200G QSFP56 ER4GIGALIGHT’s 200G QSFP56 ER4 optical transceiver has superior evergy-saving performance, its power consumption keeps lower than 6.4W at room temperature and lower than 7.5W under 0℃, 25℃ and 75℃ test temperatures; it complies with QSFP56 MSA and IEEE 802.3cn 200GBASE ER4 Ethernet protocols; the OMA sensitivity of the receiver is excellent, which keeps lower than -17dBm; The product uses 50G PAM4 CDR based on DSP technology, shows excellent performance and fully meets the requirements of 40km long reach transmission.Below the performance testing results are shown:

Picture 2: Optical Eye Diagram

Picture 3 Over 40km Fiber FEC Margin under 70℃ test temperature

Picture 4: 200G QSFP56 ER4 OMA
Sensitivity@2.4E-4, PRBS31@26.5625GbpsSame as the role of 100G QSFP28 ER4 in 100G network transmission, the 200G QSFP56 ER4 is to be an economic alternative for coherent optical modules in 40km long reach transmission of 200G network to achieve cost reduction.

GIGALIGHT complete 200G product portfolio:

AOC Series

  • 200G QSFP-DD AOC
  • 200G QSFP56 AOC

DAC Series

  • 200G QSFP56 PCC
  • 200G QSFP-DD PCC

4-Lane WDM Optical Engine Architecture Series

  • 200G QSFP56 SR4 100m
  • 200G QSFP56 DR4 500m
  • 200G QSFP56 FR4 2km
  • 200G QSFP56 eFR4 10km
  • 200G QSFP56 LR4 10km/20km
  • 200G QSFP56 ER4 40km

8-Lane WDM Optical Engine Architecture Series

  • 200G QSFP-DD SR8 100m
  • 200G QSFP-DD PSM8 2km/10km
  • 200G QSFP-DD LR8 10km/20km


As the open optical network device explorer, GIGALIGHT integrates the design, manufacture and sales of active & passive optical devices and subsystems. The main products are optical transceivers, silicon photonics transceivers, liquid cooling transceivers, optical passive components, AOC & DAC, coherent optical modules and open DCI BOX subsystems. GIGALIGHT is a hardware solution provider of innovatively designed high-speed optical interconnection that focuses on data center, 5G carrier network, metro WDM transmission, UHD broadcast video and other application fields.