— Building a High-Efficiency, Simplified, and Reliable DCI Interconnect Solution

With the rapid growth of Data Center Interconnect (DCI) demands, the need for high-bandwidth, low-power, and long-distance transmission solutions is becoming increasingly stringent. Our recommended single-wavelength 100G QSFP28 DWDM1 O-BAND optical module is a high-performance product specifically designed to meet this trend.

Key Technical Parameters:

Transmit Power: +1 dBm

Receiver Sensitivity: -9 dBm

Optical Power Budget: 10 dB

Number of Supported Channels: 16 O-Band DWDM wavelengths (200GHz spacing), offering flexible deployment and scalable expansion

Outstanding Performance in Real-World Testing Environments:

16 channels, no amplifier, over 20 km fiber with MUX & DEMUX

16 channels, with amplifier, over 30 km fiber with MUX & DEMUX

16 channels, with amplifier and TX attenuation/flatness optimization, over 30 km fiber with MUX & DEMUX

1. Standard Link Transmission Capability (No Amplifier)

Under a standard configuration with 5.5 dB MUX & DEMUX total insertion loss and 0.30 dB/km fiber attenuation, this module can reliably support 16 wavelengths over 15 km without any optical amplifier. This makes it ideal for medium-distance DCI scenarios, enabling plug-and-play high-density connections.

2. Enhanced Link Transmission Capability (With SOA Amplifier)

When deploying a single SOA optical amplifier (~7 dB gain), the module demonstrates excellent performance under the following conditions:

12 wavelengths, 30 km link (MUX & DEMUX + 30 km fiber + SOA): Perfect for high-density backbone interconnections between data centers

16 wavelengths, 30 km link (Extreme Testing): After TX flatness optimization, stable performance is achieved, supporting the demands of hyperscale DCI deployments

This module is compatible with 100G LR4 (Cisco coding), has a built-in DSP, and supports KP4-FEC 106 configuration. In testing scenarios, the host FEC needs to be disabled, further validating the module’s link tolerance and onboard FEC correction capabilities.

Summary Recommendation:

With its high optical budget, excellent TX/RX performance, support for 16 wavelengths, and adaptability to a variety of link environments, this single-wavelength 100G QSFP28 DWDM1 O-BAND module is particularly well-suited for DCI scenarios requiring high-density deployment, high-bandwidth transmission, and medium-to-long distance connectivity. Whether in standard or enhanced link architectures, this module offers a high-performance, cost-effective, and easy-to-deploy solution for your DCI infrastructure.

For detailed technical documentation or sample testing support, please feel free to contact us at any time.