Price of a 400g Coherent Optical Module

The cost of a 400G coherent optical module typically ranges from $5,000 to $15,000 per unit, depending on reach, form factor, and vendor.

Pricing Overview

400G coherent optical modules, such as QSFP-DD DCO 400ZR+ or ZR+ extended-reach modules, are high-performance pluggable transceivers designed for metro, regional, and long-haul fiber networks . The price varies significantly based on:

• Reach and performance: Standard 400ZR modules for short DCI spans (~80–120 km) are generally at the lower end of the price range, while ZR+ modules capable of 300–600 km or more can cost substantially more due to enhanced FEC, higher launch power, and advanced modulation options .
• Form factor: QSFP-DD and OSFP pluggables are common; QSFP-DD modules are widely used in data centers, while OSFP may be preferred for higher-density or long-haul applications .
• Vendor and supply chain: Modules from first-tier OEMs or certified suppliers often carry a premium, while third-party or multi-vendor compatible modules may be slightly cheaper .
• Additional features: Modules with integrated digital coherent optics (DCO), advanced DSPs, or extended temperature and power specifications can increase cost .

Typical Cost Ranges

• Standard 400ZR QSFP-DD modules: Approximately $5,000–$7,500 per module for short-reach applications (up to ~120 km) with conventional FEC .
• 400G ZR+ extended-reach modules: Approximately $10,000–$15,000 per module for long-haul deployments (300–600 km), supporting advanced FEC, higher OSNR tolerance, and flexible modulation formats .
• Bulk or enterprise procurement: Prices may be lower per unit when purchased in volume or through distributor agreements.

Considerations for Procurement

• Compatibility: Ensure the module is compatible with your switch, router, or transport system, as real-world performance depends on OSNR margin, amplifier design, and host platform interoperability .
• Deployment scenario: For metro or short DCI links, standard 400ZR modules are cost-effective. For regional or long-haul DWDM networks, ZR+ modules justify the higher cost with extended reach and reduced need for standalone transponders .
• Warranty and support: Many suppliers offer lifetime warranties, testing, and compatibility verification, which can influence the total cost of ownership . In summary, expect to budget $5,000–$15,000 per 400G coherent module, with the exact price determined by reach, form factor, vendor, and technical specifications. For precise pricing, contacting suppliers like FS, FiberMall, or OEM vendors directly is recommended .