100G QSFP28 DWDM1
    28Apr, 2025
    GIGALIGHT Unveils 100G QSFP28 DWDM1 O-BAND/200GHz Silicon Photonics Transceiver for 30km Links

    April 28, 2025, Shenzhen, China. – GIGALIGHT, a global leading provider of optical communication technologies, has unveiled its 100G QSFP28 DWDM1 optical transceiver based on the O-Band (Original Band), further expanding its high-speed optical interconnection product portfolio. This product encompasses 16 wavelength bands with a 200GHz frequency spacing, making it suitable for a variety of short-distance, low-cost DWDM transmission scenarios.

    Technical Highlights:

    • High-precision O-Band Wavelength Division Multiplexing (WDM)
    • 100Gbps Single-Channel Rate: Supports PAM4 modulation and is compatible with IEEE/ITU standards, ensuring seamless integration with existing networks.
    • Zero Dispersion Advantage: The O-Band inherently exhibits low dispersion in single-mode fibers, minimizing signal distortion in medium-to-short-distance transmissions without the need for additional compensation.
    • Low Power Consumption Design: Consumes less than 3.5W, a 20% reduction compared to similar products, contributing to the construction of green data centers.

    Application Scenarios: Flexible Adaptation for High-Density Networks

    This product can be widely applied in:

    • Metropolitan Access and Aggregation Networks: Provides cost-effective solutions for 5G front-haul and enterprise private lines.
    • Data Center Interconnection (DCI): Supports medium-to-short-distance transmissions within 80km, meeting the demands of distributed computing power.
    • Open Optical Networks: Decouples from white-box equipment, enhancing network deployment flexibility.

    Data Center 10km Interconnection (without SOA Amplifier)

    Data Center 30km Interconnection (with SOA Amplifier)

    Metropolitan Access and Aggregation Application Scenario (30km with SOA)

    Industry Value: Filling the Market Gap for O-Band High-Speed Modules

    The Product Director of GIGALIGHT stated, “The O-Band offers unique advantages in metropolitan scenarios due to its dispersion characteristics. The newly launched DWDM1 module fills the market’s urgent need for cost-effective, medium-distance 100G solutions, particularly suitable for operator edge network upgrades.” According to Dell’Oro’s forecast, the global DWDM optical transceiver market is expected to exceed $5 billion by 2025, and GIGALIGHT’s O-Band strategy will strengthen its competitiveness in niche markets.

    Future Plans: GIGALIGHT will continue to optimize its O/C/L multi-band product matrix and accelerate the commercial deployment of 400G/800G DWDM technologies.

    About GIGALIGHT

    As an open optical networking explorer, Gigalight integrates the design, manufacturing, and sales of both active and passive optical devices and subsystems. The company’s product portfolio includes optical modules, silicon photonics modules, liquid-cooled modules, passive optical components, active optical cables, direct attach copper cables, coherent optical communication modules, and OPEN DCI BOX subsystems. Gigalight focuses on serving applications such as data centers, 5G transport networks, metropolitan WDM transmission, ultra-HD broadcast and video, and more. It stands as an innovative designer of high-speed optical interconnect hardware solutions.

    23Apr, 2025
    GIGALIGHT Unveils New Network Architecture for 400G QSFP-DD SR4 to 4×100G QSFP28 SR1/SFP112 SR1 Data Center Optical Transceivers

    April 23, 2025, Shenzhen, China. – To address the demands for high-speed, high-density, and cost-efficient modern data centers, GIGALIGHT, a global leader in open optical networking, has officially launched its 400G QSFP-DD SR4 to 4×100G single-lane QSFP28/SFP112 SR1 economical short-reach data center interconnection solution. This product leverages innovative architectural design to significantly reduce deployment complexity and total cost of ownership (TCO), offering a flexible and efficient connectivity option for cloud computing, AI compute clusters, and hyperscale data centers.

    Table 1: Core Product Technical Specifications

    High-Density Elastic Architecture

    • Modular Design: The 400G QSFP-DD SR4 acts as an upstream port, branching into four independent 100G QSFP28/SFP112 SR1 downstream links via multimode/single-mode fiber, supporting 1:4 non-blocking transmission. This design increases single-port bandwidth utilization by 300% and conserves switch port resources.
    • Cross-Platform Compatibility: Deeply aligned with mainstream data center Top of Rack (TOR) architectures, it seamlessly integrates with NVIDIA, Broadcom, and other leading switch chip platforms.

    Single-Lane Technology Revolution

    • Proprietary Innovation: Based on GIGALIGHT’s single-lane 100G PAM4 modulation technology, this solution overcomes traditional parallel multi-fiber schemes, enabling stable 100-meter transmission over OM4 multimode fiber with 20% lower power consumption than comparable alternatives, meeting stringent energy efficiency requirements for SR short-range scenarios.
    • Spectral Efficiency: By carrying 100G data on a single wavelength, it reduces fiber resource usage and enhances transmission density.

    Cost-Effective Deployment

    • Cost Optimization: Compared to traditional 400G full-optic module networks, this solution reduces high-speed optoelectronic conversion units by 75%, lowering equipment procurement costs. The 100G single-lane transmission also minimizes fiber usage, further reducing construction expenses.
    • Rapid Deployment: Supports hot-swappable and plug-and-play functionality, requiring no changes to existing cabling infrastructure and cutting deployment timelines by 60%.

    Full-Scenario Compatibility

    • Flexible Configuration: Downstream ports can switch between 100G QSFP28 SR1 or 100G SFP112 SR1, ensuring compatibility with existing 100G equipment and emerging single-lane standards, safeguarding customer investments.

    Typical Application Scenarios

    • AI/GPU Cluster Interconnection: Enhances data transfer efficiency between compute nodes via low-latency, high-bandwidth connections, reducing power consumption.
    • Cloud Data Center Spine-Leaf Architecture: Optimizes east-west traffic, alleviates core layer bandwidth strain, and improves network scalability.
    • Storage Network Upgrades: Seamlessly integrates with high-speed storage protocols like NVMe over Fabric, accelerating data read/write speeds.

    Industry Insights and Future Outlook
    With the explosive growth of AI and compute demands, data centers urgently require cost-effective 400G/100G interconnection solutions. GIGALIGHT’s innovative design balances performance and cost, enabling customers to transition smoothly to next-generation network architectures at minimal expense. Looking ahead, GIGALIGHT will continue to advance single-lane technology, driving data center interconnection toward higher density and lower power consumption.

    GIGALIGHT’s latest solution not only provides a new choice for data center interconnection but also leads the industry toward more efficient and economical futures through technological innovation.

    About GIGALIGHT

    As an open optical networking explorer, Gigalight integrates the design, manufacturing, and sales of both active and passive optical devices and subsystems. The company’s product portfolio includes optical modules, silicon photonics modules, liquid-cooled modules, passive optical components, active optical cables, direct attach copper cables, coherent optical communication modules, and OPEN DCI BOX subsystems. Gigalight focuses on serving applications such as data centers, 5G transport networks, metropolitan WDM transmission, ultra-HD broadcast and video, and more. It stands as an innovative designer of high-speed optical interconnect hardware solutions.

    22Apr, 2025
    O/C-band DWDM Modules: COLOR Series Drives Efficient Transmission

    High-speed and stable data transmission capabilities are pivotal for the development of various industries. From data center interconnections to metropolitan area network infrastructure, optical communication technologies face increasingly stringent requirements. DWDM technology, with its high bandwidth and long-distance transmission capabilities, has become a cornerstone of communication networks. Among these, the O-band and C-band each offer unique advantages. GIGALIGHT has introduced three COLOR series 100G DWDM optical transceivers for these two bands, providing users with optimal solutions.

    O-band and C-band: Distinctive Tools for Transmission

    In DWDM (Dense Wavelength Division Multiplexing) systems, C-band and O-band are two commonly used optical wavelength bands, differing in wavelength range, transmission characteristics, and application scenarios.

    O-band: The earliest band used in fiber-optic communications (e.g., early 1310nm systems).

    C-band: The core band for modern DWDM, covering 1530–1565nm (expandable to C+L-band, 1565–1625nm).

    The zero-dispersion characteristic of O-band is suitable for direct detection (non-coherent), but its high attenuation limits transmission distance.

    C-band’s low attenuation and amplifier support make it ideal for long-haul DWDM.

    How to Choose Between O-band and C-band?

    C-BAND

    Requirements: High speed (≥100G), long-distance, high channel density (e.g., operator backbone networks).

    Limitations: Requires dispersion compensation and complex DSP (coherent optics).

    Long-haul DWDM systems:

    Backbone networks, submarine cables (e.g., C-band 96 channels, 100G/400G per channel).

    Coherent optical communications (C-band + EDFA for thousands of kilometers of transmission).

    Expanded applications:

    Combined use of C+L-band (doubling channel capacity, e.g., 192 channels).

    O-BAND

    Requirements: Low cost, short-range (<40 km), plug-and-play (e.g., intra-data center rack interconnections).

    Limitations: No amplifier support, typically ≤100G speed.

    Low dispersion: O-band’s low fiber dispersion is suitable for long-distance transmission, reducing signal distortion.

    High bandwidth: Through DWDM technology, O-band optical transceivers can transmit multiple wavelengths over a single fiber, significantly increasing transmission bandwidth.

    Compatibility: O-band DWDM optical transceivers are generally compatible with existing fiber infrastructure, facilitating upgrades and expansions.

    The characteristics of O-band DWDM optical transceivers make them suitable for applications in metropolitan networks and data center interconnections.

    GIGALIGHT COLOR Series: Exceptional Choices for O-band and C-band

    COLOR X 100G QSFP28 DWDM1 O-BAND

    Product speed: 100Gbps, PAM4 modulation mode, 30km transmission distance (with SOA).

    Full series of 16 wavelengths, covering O-Band DWDM 1295.56nm~1312.58nm with a 200GHz wavelength interval.

    Key Applications:

    5G front-haul

    Data center interconnection (DCI)

    COLOR ZR+ 100G QSFP28 PSM DWDM4

    O-band

    Product speed: 100Gbps, NRZ modulation mode, 40km transmission distance (with SOA).

    Full series of 16 wavelengths, covering ITU-T 694.1 O-Band DWDM 233.6~231.2THz with a 150GHz wavelength interval.

    Key Applications:

    Point-to-point access networks

    C-band

    Product speed: 100Gbps, NRZ modulation mode, 120km transmission distance (with EDFA & DCM).

    Full series of 48 wavelengths, with 4 channels per device, covering C-Band DWDM 191.3THz to 196.0THz with a 100GHz wavelength interval.

    Key Applications:

    100G Ethernet metropolitan access via DWDM

    Point-to-point access networks

    GIGALIGHT’s COLOR series (COLOR X/ZR+) 100G QSFP28 DWDM optical transceivers offer innovative products for both O-band and C-band, providing users with diverse choices. O-band products, with their low loss and no need for dispersion compensation, have broad application prospects in metropolitan access scenarios. C-band products, known for their maturity, stability, and long-distance transmission capabilities, are the preferred choice for data center interconnections and cross-metropolitan optical cable transmissions.

    As communication technologies continue to evolve and market demands change, GIGALIGHT will continue to develop more cost-effective, non-coherent DWDM transmission solutions in 200G, 400G, and 800G transmission networks using silicon photonics and traditional technologies. We believe that GIGALIGHT’s optical transceiver products will play an even more critical role in future communication networks, providing users with more efficient, reliable, and cost-effective data transmission services, and jointly driving innovation and progress in communication technologies. Choosing GIGALIGHT means choosing endless possibilities for future communications!

    16Apr, 2025
    GIGALIGHT to Showcase Cutting-Edge Optical Interconnect Solutions at SVIAZ 2025 in Moscow

    April 16, 2025, Shenzhen, China. – The SVIAZ 2025 International Communications Exhibition will take place from April 22nd to 25th at the Expocentre Fairgrounds in Moscow. GIGALIGHT will participate in the event, presenting innovative optical interconnect products and solutions at Booth 22F40, Pavilion 2 Hall 2. Global customers and partners are invited to visit for in-depth discussions.

    At the exhibition, GIGALIGHT will highlight six key technological solutions and demonstrate multiple new product demos, showcasing its expertise in data centers, AI computing networks, 5G communications, DWDM systems, and liquid cooling interconnects.

    Featured Solutions and Product Demos:

    Incoherent Color ZR+ 100G DWDM Solution

    New Product Demo: 100G QSFP28 PSM DWDM4 (C-BAND)

    The GIGALIGHT four-carrier Color ZR+ C-BAND 100G QSFP28 PSM DWDM4 optical transceiver features an MPO-12 interface (12-core) paired with an external wavelength division multiplexer/demultiplexer. Powered by DCM dispersion compensation and EDFA amplification, it supports transmission distances of at least 80km. The transmitter employs 4x25G C-band 100GHz DWDM EML lasers, while the receiver uses PIN detectors, offering 48CH wavelengths. With total power consumption below 5W, it delivers 1200G bandwidth over dual-fiber or 400G over single-fiber. This transceiver plugs directly into 100G QSFP28 switch ports, eliminating the need for traditional DWDM electrical layer equipment. GIGALIGHT also provides a one-stop solution with its proprietary intelligent 1U optical layer device, integrating DWDM EDFA, AAWG, and tunable TDM or fixed DCM for rapid deployment.

    Incoherent Color X O-BAND DWDM Solution

    New Product Demo: 100G QSFP28 DWDM1 (O-BAND)

    The GIGALIGHT Color X O-BAND series 100G QSFP28 DWDM1 silicon photonic transceiver utilizes a 200GHz O-BAND DWDM Grid and single-wave 100G PAM4 silicon photonic modulation technology. Equipped with a Duplex LC interface, it offers 16 selectable wavelengths, achieving 1600G total bandwidth over dual-fiber single-mode fiber for DCI interconnects. Paired with an SOA optical amplifier, it supports 30km transmission (10km without SOA) and eliminates the need for dispersion compensation DCM modules. With power consumption below 3.5W, this solution outperforms coherent DWDM in cost, latency, power efficiency, and ease of deployment.

    Join Us at SVIAZ 2025!

    More product demos await your discovery. Visit GIGALIGHT at Booth 22F40, Pavilion 2 Hall 2, and experience the future of optical networking firsthand.

    GIGALIGHT is committed to delivering leading-edge optical communication products and solutions to global customers, driving the convergence of AI computing infrastructure and green energy-efficient technologies. At SVIAZ 2025, we look forward to collaborating with industry partners to explore new opportunities in next-generation networks.

    About GIGALIGHT

    As an open optical networking explorer, Gigalight integrates the design, manufacturing, and sales of both active and passive optical devices and subsystems. The company’s product portfolio includes optical modules, silicon photonics modules, liquid-cooled modules, passive optical components, active optical cables, direct attach copper cables, coherent optical communication modules, and OPEN DCI BOX subsystems. Gigalight focuses on serving applications such as data centers, 5G transport networks, metropolitan WDM transmission, ultra-HD broadcast and video, and more. It stands as an innovative designer of high-speed optical interconnect hardware solutions.