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DCI / Long-Haul / ISL

Ultra-high capacity coherent transport for data center interconnect, terrestrial, submarine and inter-satellite links (ISL).

Fueled by surging AI workloads, DCI traffic continues to expand rapidly. Hyperscalers require coherent optical engines with best-in-class spectral efficiency and ultra-low pJ/bit power consumption to support high-scale GPU clustering. The same coherent DSP technology extends seamlessly to carrier-grade terrestrial, submarine, and ISL long-distance transmission scenarios.

Overview

The Challenge We Solve

Fueled by surging AI workloads, DCI traffic continues to expand rapidly. Hyperscalers require coherent optical engines with best-in-class spectral efficiency and ultra-low pJ/bit power consumption to support high-scale GPU clustering. The same coherent DSP technology extends seamlessly to carrier-grade terrestrial, submarine, and ISL long-distance transmission scenarios.

Exponential AI-Driven Bandwidth Growth

AI and cloud traffic continues to surge rapidly across data center clusters and DCI links. Legacy 400G transmission capacity can no longer support the fast scaling of modern GPU compute clusters, requiring higher-speed optical networking.

Data Center Power & Density Constraints

AI data centers face strict power budgets and high-density deployment limits. Low-power DSP design reduces per-channel power consumption, lowering OPEX and cooling overhead while enabling dense 800G+ networking.

High Spectral Efficiency Demand for AI DCI

GPU cluster interconnection requires maximum fiber spectrum utilization. Advanced modulation, probabilistic constellation shaping and real-time nonlinear compensation optimize C+L+O band efficiency to carry massive AI data streams on existing fiber.

Multi-Vendor Open Interoperability

Hyperscale AI and cloud networks adopt disaggregated, multi-vendor architectures. OpenROADM and OpenZR+ standard interfaces eliminate vendor lock-in, delivering flexible, scalable interconnection for distributed AI compute clusters.

Key Specifications

Max Line Rate800G+ per wavelength
ModulationQPSK ~ 16QAM + PCS
FECoFEC / CFEC / SD-FEC / BCH
FramingFlexO /  ETH
Reach10Km ~ 2,000 Km
Power (ZR)< 12W
Optical ModuleQSFP-DD / OSFP
InteroperabilityOIF, OpenZR+, OpenROADM, CMIS
Capabilities

What SparkGrid Delivers

800G+ High-Performance Coherent DSP Solution

Delivers single-carrier 800G coherent transmission with dual-polarisation, up-to-16QAM and PCS modulation , enabling high fibre capacity for optical transport networks.

Flexible Multi-Form Delivery for Diverse Integration

Supports multiple product forms including packaged chip and bare die delivery to meet diverse customer integration requirements.

OE Co-Design for Optimized System Performance

Supports optoelectronic engine joint solution co-development to achieve system-level optimal performance.

Design Enablement & Professional Services

Provides comprehensive optical module design guidelines and supporting design services for customers’ module development.

Performance Tuning & Full-Range Test Support

Offers end-to-end performance tuning service and comprehensive troubleshooting support for test and validation phases.

Network Architecture Consultancy & Optimization

Provides network-level system solutions and architecture design consultancy to optimise overall optical network performance

Use Cases

Who Benefits

Hyperscalers building high-speed DCI for large-scale GPU clusters
Open line system integrators for disaggregated optical networks
Network OEMs licensing our coherent DSP chips
Operators, terrestrial,submarine and ISL providers for long-haul transport deployments

Ready to Get Started?

Talk to our engineering team about integrating SparkGrid solutions into your next-generation network.