High-speed optical modules range from tens of dollars for short-reach 100G modules to over $130,000 for specialized long-haul 400G coherent modules, depending on speed, reach, and technology.

100G Optical Modules

The cost of 100G QSFP28 modules varies widely based on reach and technology. Short-reach SR/short-distance modules can cost $35–$250, while vendor-certified CWDM, LR, or FR modules typically range from $200–$1,000. High-end DWDM or coherent 100G modules for metro or long-haul applications can exceed $2,000–$20,000+. Prices are influenced by OEM vs third-party branding, warranty, and compatibility considerations .

400G Optical Modules

400G QSFP-DD modules also show significant price variation. Short-reach SR8 modules for in-rack connections are priced around $1,400–$1,800 from reputable third-party vendors. In contrast, coherent ZR+ modules for long-haul data center interconnects can exceed $130,000. The final cost depends heavily on module type, transmission distance, and vendor .

800G Optical Modules

800G modules are the latest high-speed solutions, often used in AI and high-performance data centers. Costs are generally higher due to advanced engineering, materials, and testing requirements. For example, standard OSFP modules may cost $1,300, while low-power optimized (LPO) variants can save $500 upfront but still represent a substantial initial investment .

Factors Affecting Cost

1. Engineering and R&D: High-speed modules require complex chip design, photonic integration, and digital signal processing, which can account for 20–30% of total cost .
2. Materials: Lasers, modulators, photodetectors, and high-quality wafers are expensive and critical for performance .
3. Production and Testing: Labor, equipment, and reliability testing (temperature cycling, moisture resistance, shock) add to the final price .
4. Business Strategy: OEM pricing, volume discounts, and market positioning can significantly influence module cost .
5. Module Type and Reach: Short-reach modules are cheaper, while long-haul, coherent, or DWDM modules are premium-priced .

Summary

High-speed optical module costs are highly variable. Entry-level 100G modules start around $35, 400G short-reach modules around $1,400, and specialized long-haul 400G or 100G coherent modules can exceed $20,000–$130,000. Costs are determined by speed, reach, technology, OEM vs third-party sourcing, and engineering complexity .