GIGALIGHT Launches the Universal Technology of Submersible Optical Transceivers Available for Liquid-cooled Data Centers

Shenzhen, China, July 30, 2021 − GIGALIGHT has announced its accomplishment of technical research on submersible optical transceivers today. The technological fruit can provide liquid-cooled data centers with high-reliability and high cost-performance optical interconnection solutions, and is applicable to all data center optical transceivers developed by GIGALIGHT.
Liquid-cooled data center technology has been mature for a long time, but related applications have not yet been popularized. According to industry research, a data center’s PUE can be easily controlled to about 1.1 through the application of liquid cooling. If the power density of a single cabinet reaches 20KW, the liquid cooling technology can help save energy effectively.
GIGALIGHT has conducted a number of researches on immersion cooling technology of optical transceivers and realized a series of advantages as follows:
  • Direct immersion liquid cooling method is available
  • Adopting optimized optical device sealing design (patent pending), which can effectively prevent the coolant from entering the optical circuit and prevent the solution from affecting the optical circuit
  • Passed 72 hours of 0.5 kg liquid pressurization test (to improve the fluidity of the coolant), showing its high reliability and long-term stability of data transmission
  • The temperature range of the liquid environment is 10-55℃
  • Working depth in liquid can reach deeper than 1m
  • Optical transceiver material selection meets the long-term compatibility requirements of liquid cooling
The types of immersion cooling optical transceivers launched by GIGALIGHT this time are listed as follows:
  • 25G SFP28 SR 850nm, with Dual LC pigtail
  • 25G SFP28 LR 1310nm, with Dual LC pigtail
  • 100G QSFP28 SR4 850nm, with MPO pigtail
  • 100G QSFP28 PSM4 1310nm, with MPO pigtail
It it worth mentioning that GIGLALIGHT will demonstrate the technological achievement at 2021 CIOE.


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.