Paving the Way for Cost-Effective DWDM Transmission — FIBERSTAMP Showcases O-Band 400G DWDM4 Direct-Detect Optical Module and Subsystem at OFC 2026

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.

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!