Singapore, March 12, 2026 —At the upcoming OFC 2026 in Los Angeles, FIBERSTAMP will unveil its exclusively developed O-band 400G DWDM4 optical modules and transmission subsystems. Leveraging the zero-dispersion characteristics of the O-band, FIBERSTAMP delivers a more economical, simplified, and efficient 400GE interconnect solution for global data center connectivity.
Traditionally, the C-band has dominated long-haul transmission. However, for DCI “last-mile” applications spanning 2 km to 30 km, its cost structure is increasingly difficult to justify. FIBERSTAMP’s O-band (1310 nm) DWDM technology, with its naturally low-dispersion transmission window, establishes a new benchmark for cost-efficient 400GE data center interconnects.
400G QSFP-DD PSM DWDM4 Optical Module
Key Advantages:
DCM-Free Operation: Operating within the O-band’s low-dispersion window eliminates the need for bulky and costly dispersion compensation modules (DCM), simplifying line card design while reducing insertion loss.
Ultra-Low Power Consumption: Advanced silicon photonics integration enables industry-leading power efficiency, making the solution ideal for high-density data center deployments.
Cost-Optimized Architecture: For short- to mid-reach DCI applications, the solution avoids the complexity of coherent C-band transceivers, providing a high-performance direct-detect architecture that significantly reduces CapEx.
Ultra-Low Latency: By eliminating DSP-based dispersion compensation required in coherent optics, the module greatly reduces optical transmission latency, enabling faster data center interconnect performance.
| Feature | Specification |
| Optical Interface | MPO-12 / APC |
| Modulation | 4 × 100G PAM4 silicon photonic modulators |
| Transmission Distance | 10 km or up to 30 km with external SOA |
| Core Technology | O-band DWDM4 (scalable to 16 wavelengths), enabling 4 × 400GE high-capacity interconnect |
| Form Factor | 400G QSFP-DD |
| Power Consumption | Typical 10 W, Max < 11 W |
| Key Feature | Operates in the zero-dispersion window (no external DCM required) |
| Target Applications | Hyperscale DCI, Enterprise Interconnect, Edge Compute Backhaul |
400G QSFP-DD DWDM4 O-Band DCI Applications (10–30 km)
OFC 2026 Live Demonstration
FIBERSTAMP warmly invites visitors to our booth for a live end-to-end demonstration of the O-band 400G DWDM4 transmission system. The demonstration will feature:
400G DCI chassis
400G QSFP-DD OEO line cards
200 GHz O-band DWDM MUX/DEMUX modules
FIBERSTAMP provides a complete turnkey solution, demonstrating how the O-band architecture can reduce network deployment costs by approximately 50% while delivering efficient and scalable DCI connectivity.
Event: OFC 2026, Los Angeles, CA, USA
FIBERSTAMP Booth: #2416
Live Demo: “O-Band 400G DWDM4 Transmission in Action”
Redefining Cost-Effective 400G Transmission. See you at OFC 2026!
