100G QSFP28 DWDM1
    22Jul, 2025
    Recommended Product: Single-Wavelength 100G QSFP28 DWDM1 O-BAND Optical Module

    — 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.

    20250722-2
    22Jul, 2025
    Gigalight Liquid-Cooled Optics: A Thematic Study on Data Center Interconnects

    — The Data Center Revolution Driven by Liquid-Cooled Optical Interconnects

    Liquid-Cooling-1

    1. Research Background and Industry Trends

    1.1 Thermal Challenges in Data Centers
    With the rapid development of AI, HPC (High-Performance Computing), and 5G, the power density of data centers has increased dramatically. Traditional air-cooling solutions can no longer meet the thermal demands of high-performance chips such as GPUs, ASICs, and optical chips. According to IDC, the global liquid-cooled data center market will exceed USD 20 billion by 2027, with a compound annual growth rate (CAGR) of 25%.

    1.2 Liquid Cooling Becomes Mainstream

    Immersion Liquid Cooling: Direct-contact cooling with PUE as low as 1.02–1.05, suitable for ultra-high-density computing clusters.

    Cold Plate Liquid Cooling: Suitable for partial retrofits, though less efficient than immersion cooling.

    Silicon Photonics + Liquid Cooling: Silicon photonics (SiPh) reduces power consumption of optical modules. When combined with liquid cooling, it further improves energy efficiency.

    As a leader in optical interconnect technology, Gigalight is pioneering immersion liquid-cooling extenders and silicon photonics liquid-cooled optical modules, driving data centers toward low-carbon and high-density development.

    2. Technical Research & Analysis

    2.1 Immersion Liquid-Cooling Extenders

    Technical Highlights:

    Product Design: Uses high-speed wire cores, supports extension up to 7 meters, continues our patented fish-shaped industrial design.

    Module Compatibility: Supports multiple form factors such as QSFP28, QSFP-DD, OSFP, SFP112; compatible with 25G to 800G and future 1.6T optical modules, adaptable for various scenarios.

    Thermal Management Optimization: Equipped with a 1.5W silent fan at the connector for enhanced heat dissipation.

    Visual Monitoring Indicators: Designed for frequent hot-plugging at switch ports, helping extend port lifespan.

    Gigalight Immersion Liquid-Cooling Extender Portfolio:

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    2.2 Silicon Photonics Liquid-Cooled Optical Modules

    Technical Highlights:

    Silicon Photonics Integration (SiPh): Offers high integration, low power consumption, lower cost, and high-speed transmission. Reduces module power consumption by 30%, supporting 400G/800G and future 1.6T speeds.

    Packaging Design: Unique hermetically sealed housing with pressure resistance >0.2Mpa. The enclosure uses high thermal conductivity materials for 50% improved cooling efficiency in liquid environments. Includes a dedicated seal-check valve to ensure sealing quality.

    Compatibility: Supports QSFP112, QSFP-DD, OSFP, OSFP-RHS and is ready for 100G–800G and future 1.6T modules.

    CPO (Co-Packaged Optics) Compatible: Offers ultra-low power options for next-gen 51.2T switches.

    Coolant Types Supported: Fluorinated liquid, mineral oil, silicone oil, etc.

    Gigalight Silicon Photonics Liquid-Cooled Optical Module Portfolio:

    Liquid-Cooling-3
    20250722-1

    3. Market Applications & Competitive Advantages

    3.1 Target Markets

    Supercomputing Centers: Demand ultra-high-density liquid cooling for GPU/CPU clusters.

    Cloud Giants: Companies like Google, AWS, and Alibaba Cloud are building liquid-cooled data centers.

    Edge Computing: High-power edge servers require compact liquid-cooled optical interconnects.

    3.2 Competitive Advantages

    Full-Stack Liquid-Cooled Interconnect Solutions: End-to-end support from optical modules to liquid-cooling extenders.

    Silicon Photonics + Liquid Cooling: Dual-power reduction results in up to 40% overall energy efficiency improvement.

    Open Ecosystem Collaboration: Joint solution development with chipmakers and liquid-cooling system vendors.

    4. Future Outlook

    1.6T Liquid-Cooled Optical Modules: Expected commercialization by 2026, enabling next-gen AI clusters.

    Widespread CPO Deployment: Liquid cooling will be essential for the adoption of co-packaged optics.

    Standardization Progress: Industry-wide standards for liquid-cooled optical interconnects will accelerate adoption.

    5. Conclusion

    Gigalight’s immersion liquid-cooling extenders and silicon photonics liquid-cooled optical modules represent the future of optical interconnects in data centers. These innovations not only solve the thermal bottleneck of high-performance computing, but also advance the industry’s move toward low-carbon and high-density infrastructure. With the exponential growth in AI computing demands, the liquid-cooled optical interconnect market is poised for rapid expansion — and Gigalightis well-positioned to become a key industry supplier.