Project Quotation 400G Optical Core Router

A 400G optical router project can range from $1,400 for short-reach QSFP-DD modules to over $130,000 for long-haul coherent ZR+ modules, depending on reach, modulation, and vendor.

Module Options and Technical Overview

• 400ZR Modules: Optimized for short-reach, single-span data center interconnects (up to 40 km without amplification) in QSFP-DD pluggable format. Ideal for high-density access and point-to-point DCI applications .
• 400ZR+ Modules: Extended reach and flexible line rates (100–400G) using QPSK, 8QAM, or 16QAM modulation. Can achieve distances up to 600 km with external amplification, and up to 750 km at lower sub-rates, suitable for metro, regional, and core networks .
• Form Factor: QSFP-DD pluggable modules allow integration with existing router ports, supporting breakout to lower-speed Ethernet interfaces for flexible deployment .

Pricing Overview

• Short-Reach SR8 Modules: Typically $1,400–$1,800 from third-party vendors, suitable for in-rack or cross-row connections .
• Medium-Reach DR4/FR4 Modules: Bridge data center rows and shorter campus links; pricing is competitive due to third-party ecosystem .
• Long-Reach LR4, ZR, ZR+ Modules: OEM LR4 modules can exceed $10,000, while coherent ZR+ modules for long-haul DCI may surpass $130,000 .
• Volume Discounts: Vendors often provide tiered pricing for bulk purchases, which can significantly reduce total cost of ownership .

Deployment Considerations

• Network Reach: Choose modules based on required distance and amplification needs. 400ZR is sufficient for short spans, while 400ZR+ supports extended metro and regional links .
• Modulation and Line Rates: Higher-order modulation (16QAM) increases capacity but may reduce reach; QPSK offers longer distances with lower spectral efficiency .
• Compatibility: QSFP-DD modules are designed for multi-vendor interoperability, enabling flexible upgrades without changing the optical interface .
• Total Cost of Ownership (TCO): Consider module cost, power consumption, and operational expenses over 3–5 years to optimize investment .

Recommended Quotation Approach

1. Define Network Requirements: Distance, bandwidth, and redundancy needs.
2. Select Module Type: SR8 for short-reach, ZR+ for long-haul or metro/regional applications.
3. Obtain Vendor Quotes: Include OEM and reputable third-party options to compare pricing and support.
4. Include TCO Analysis: Factor in power, cooling, and maintenance costs for a complete project budget. By aligning module selection with network reach and performance requirements, a 400G optical router deployment can be cost-effective while supporting high-capacity, future-proof optical networking .