Sky Optics 400G QSFP112 LR4 long-reach single-mode optical transceiver is a high-performance long-distance 400G transmission module developed for metropolitan area networks, cross-building campus links and remote data center interconnection.

Adopting mature CWDM4 wavelength division multiplexing technology covering 1271nm, 1291nm, 1311nm and 1331nm working wavelengths, it realizes independent parallel transmission of four optical channels, greatly improving link bandwidth utilization and transmission stability.
Equipped with universal duplex LC/UPC interface, the module features compact structure and flexible wiring, compatible with all mainstream brand switches, routers and optical transmission equipment on the market.
Built with high-power high-sensitivity EML laser transmitters and low-noise receiving arrays, it effectively suppresses optical signal attenuation and interference, achieving stable 425Gbps high-speed transmission up to 10km over standard single-mode fiber.
Adopting advanced 4×112G PAM4 modulation technology, it delivers ultra-low bit error rate and long-term transmission stability. With power consumption controlled within 10W and wide temperature working range of 0°C to 70°C, it adapts to various complex outdoor and computer room operating environments.
Fully compliant with IEEE 802.3ck and CMIS 4.0 international standards and equipped with complete DDM real-time digital diagnosis function, it supports real-time monitoring of optical power, temperature, voltage and other core parameters, enabling remote intelligent operation and maintenance.
It is the ideal long-distance 400G networking solution for metro edge transmission, cross-region enterprise network interconnection and remote data center linkage.