Overview of 400G Transmission Technology
Achieving 400G transmission in data centers typically relies on multi-core parallel optical fibers.
Here are the two main technological approaches:

1. NRZ Encoding With NRZ (Non-Return-to-Zero) encoding, each optical fiber channel supports a maximum transmission rate of 25G. To achieve 400G, 16 fibers are required for transmitting and another 16 for receiving, totaling 32 fibers.
   
   • Drawback: While theoretically feasible, the interface design for 400GBase-SR16 is highly complex, making it less practical for real-world applications.
2. PAM-4 Encoding PAM-4 (Pulse Amplitude Modulation-4) encoding increases the transmission rate of each optical fiber channel to 50G. This allows 400G bidirectional parallel transmission using only 8 fibers and a standard MPO-16 connector.
   
   • Advantage: PAM-4 technology makes 400GBASE-SR8 a more efficient and practical alternative to 400GBASE-SR16.

By leveraging PAM-4 encoding, data centers can achieve higher efficiency and simplified infrastructure for 400G transmission. This positions 400GBASE-SR8 as the preferred solution in high-speed optical networking

Applications and Advantages of MPO-16 Connectors

The MPO-16 fiber optic connector is the ideal choice for 400G transmission and is expected to become the mainstream standard for high-speed transmission in the future, including 800G and 1.6T. Compared to the older MPO-12 connector, the MPO-16 introduces key design improvements:

•Offset Key Design
This design prevents the incorrect insertion of an MPO-12 male connector into an MPO-16 female connector, which could lead to end-face damage. This improvement significantly enhances the reliability and compatibility of the connector.

Fastlinkcabsys Pre-terminated Trunk Cables and Array Cords with MPO-16 Connectors Highlights To meet the current and future high-speed transmission demands of data centers, FastLinkcabsys has launched a series of high-performance products featuring MPO-16/APC low-loss fiber optic connectors. These include Trunk Cables and Array Cords:

1.Trunk Cable

•Made with 24-core double-jacketed cable, with an outer diameter of 6.5mm.

•Optimized for tensile and compressive strength, it can be equipped with a pulling eyes, making installation easier while protecting the fiber.

2.Array Cord