Sky Optics 400G QSFP112 FR4 optical transceiver is a CWDM4 wavelength division multiplexing high-speed optical module designed for medium-distance 400G network transmission.

Different from single-wavelength modules, this product adopts advanced CWDM4 four-wavelength multiplexing technology, covering 1271nm, 1291nm, 1311nm and 1331nm working wavelengths, realizing multi-channel parallel high-speed transmission. Equipped with universal duplex LC/UPC interface, it is compatible with most mainstream network equipment on the market, with convenient wiring and strong versatility.
Adopting 4×112G PAM4 high-efficiency modulation algorithm, it stably outputs 425Gbps ultra-high bandwidth, supporting 2km long-distance lossless transmission over standard single-mode fiber.
The module features low power consumption below 9.5W, stable heat dissipation and strong environmental adaptability. It strictly complies with IEEE 802.3ck and CMIS 4.0 industry standards, supports DDM real-time intelligent monitoring, and can accurately feed back module operating status.
With flexible LC port design and excellent wavelength division transmission performance, it is an ideal choice for enterprise backbone networks, campus data center medium-distance interconnection and commercial building high-speed network access.