Immersion Optical Module

Immersion Optical Modules are specialized optical transceivers designed to operate reliably in liquid-cooled or immersion-cooled data center environments, supporting high-speed data transmission while maintaining thermal efficiency.OverviewImmersion optical modules are optical transceivers engineered to function in liquid or two-phase immersion cooling systems, which are increasingly used in high-performance data centers to manage heat from AI, cloud, and high-density computing workloads . These modules are designed with airtight packaging and robust sealing to withstand immersion in cooling liquids, typically up to 1 meter deep, while maintaining signal integrity and reliability .Key FeaturesForm Factors and Data Rates: Immersion optical modules are available in a wide range of form factors including SFP, SFP+, SFP28, QSFP+, QSFP28, QSFP56, QSFP-DD, OSFP-RHS, and QSFP112, supporting data rates from 10G up to 800G .Transmission Distance: Depending on the type, multi-mode modules can transmit over 100–400 meters, while single-mode modules can reach 2–10 kilometers .Cooling Compatibility: Modules are compatible with liquid immersion cooling, including two-phase systems, which significantly reduce operating temperatures and improve energy efficiency .Reliability and Testing: Each module undergoes pressure, performance, and helium-leak testing to ensure airtightness, low bit error rates, and long-term reliability in immersion environments .Connectivity Options: Modules often include fiber optic pigtails with MPO12/APC connectors and customizable cable lengths, enabling flexible integration into existing data center infrastructure .Advanced TechnologiesSome immersion optical modules incorporate Linear Pluggable Optical (LPO) or Linear Hybrid Pluggable Optical (LRO) designs, which reduce or partially retain DSP functionality to lower power consumption, reduce latency, and enhance reliability . These designs are particularly beneficial for AI and machine learning workloads, where high-speed, low-latency interconnects are critical.ApplicationsHigh-Performance Data Centers: Immersion optical modules are ideal for servers and switches in liquid-cooled racks, enabling high-density, high-speed interconnects without overheating .5G Fronthaul Networks: Modules support high-bandwidth, low-latency optical links for telecom infrastructure .Long-Distance Optical Transmission: Single-mode modules with optical amplifiers or dispersion compensation can extend transmission distances while maintaining signal quality .BenefitsThermal Efficiency: Operate effectively in immersion cooling, reducing the need for traditional air cooling and lowering energy costs .Scalability: Flexible form factors and modular designs allow data centers to upgrade or scale capacity without redesigning the cooling system .Enhanced Reliability: Reduced operating temperatures and fewer active components improve MTBF and overall system stability .Cost Savings: Efficient cooling and simplified installation reduce both energy and maintenance costs . Immersion optical modules represent a critical component in modern liquid-cooled data centers, combining high-speed optical performance with robust thermal management and reliability, enabling scalable and energy-efficient network infrastructure.