400G Optical Transport Network

 

Parameters Table

 

Parameter index		Describe
Maximum capacity of a single board		Dual-channel 4*100G bidirectional transmission Dual-channel 4*100G one-way transmission Equipped with flexible coherent modulation technologies: DP-16QAM, DP-8QAM, DP-QPSK. Equipped with a variety of FEC error correction technologies: oFEC, CFEC, SCFEC, SDFEC.
Wavelength (frequency) range		DWDM：1529.16nm-1567.14nm(191.3THz-196.05THz)
Line side modulation mode		DP-QPSK@100G;DP-16QAM@200G;DP-8QAM@200G;DP-QPSK@200G DP-8QAM@300G;DP-16QAM@400G
line side protocol		OpenROADM/OpenZR+/SCFEC
Dispersion Tolerance		±40000ps/nm@100G
OSNR tolerance		<11.5dB@100G DP-QPSK;<18.5dB@200G DP-8QAM;<21.5dB@200G DP-16QAM; <14dB@200G DP-QPSK; ＜19dB@300G DP-8QAM; ＜22dB@400G DP-16QAM
Service access type		100GE,100GE KR4,OTU4 and 100G FlexE
Board size		175(W)×40(H)×209(D)(mm)
Environmental requirements	Operating temperature	-5℃ ~ 45℃
	storage temperature	-40℃ ~ 85℃
	Relative humidity	5% ~ 95% no condensation
Safety and EMC		Comply with FCC, UL, CE, TUV, CSA standards
Power consumption		＜100W

 

Visual B/S Architecture Realizes Real-Time Management
You can easily check important data, alarms, reports, and much more through WEB management anytime on-site or remotely.

 

400G Optical Transport Network Multi-Rate Ports for Link Transmission

Flexible architecture with a 4x QSFP28 client interface enables the same device to be used in multiple applications.

1. 400G CFP2-DCO Line Port              2. 100G ZR4/ER4/LR4/SR4/CWDM4 Client Port

 

 

 

 

 

Optical Transport Network infrastructure has become the backbone of global telecommunications, enabling seamless data transmission across vast distances. As bandwidth demands continue to surge, enterprises and service providers are seeking advanced solutions that deliver both performance and flexibility.

Understanding Next-Generation Optical Transport Network Architecture

Modern Optical Transport Network systems represent a quantum leap in transmission technology. By leveraging coherent modulation and advanced error correction mechanisms, these platforms can achieve unprecedented data rates while maintaining signal integrity across extended fiber spans. The integration of flexible rate adaptation allows network operators to optimize capacity utilization based on real-time requirements.

Key Capabilities Driving Network Transformation

The latest Optical Transport Network equipment brings remarkable versatility to network design. Supporting bidirectional transmission at 400G per channel, these systems enable operators to scale bandwidth without infrastructure overhaul. The dual-channel architecture provides redundancy and load balancing, critical for mission-critical applications.

Adaptive Modulation Technology

Coherent modulation formats ranging from DP-QPSK to DP-16QAM allow Optical Transport Network platforms to adapt to varying link conditions. This flexibility means network operators can maximize throughput on high-quality fiber while ensuring reliable connectivity across challenging routes. The ability to switch between modulation schemes dynamically optimizes the balance between reach and capacity.

Advanced Error Correction

Multiple FEC technologies embedded in Optical Transport Network solutions provide robust protection against transmission impairments. From standard oFEC to sophisticated SDFEC algorithms, these error correction mechanisms enable operation at lower OSNR thresholds, extending reach and reducing amplification requirements.

Spectral Efficiency and DWDM Integration

Operating across the full C-band spectrum, Optical Transport Network systems maximize fiber utilization through dense wavelength division multiplexing. The ability to deploy 80+ channels on a single fiber pair creates significant economic advantages, reducing the cost per bit transmitted while preserving capacity for future growth.

Real-World Applications and Use Cases

Optical Transport Network deployment scenarios span multiple industries and applications:

Data Center Interconnect: High-capacity links between geographically distributed facilities require the ultra-low latency and massive bandwidth that modern optical transport provides. The flexible service access supporting 100GE and FlexE ensures seamless integration with existing data center fabrics.

5G Mobile Backhaul: As mobile networks evolve, Optical Transport Network infrastructure delivers the fronthaul and backhaul capacity needed to support distributed antenna systems and edge computing nodes. The deterministic latency characteristics ensure quality of service for time-sensitive applications.

Enterprise Wide Area Networks: Organizations with multi-site operations leverage Optical Transport Network technology to create private high-speed networks, eliminating dependency on shared infrastructure while maintaining complete control over security and performance.

Environmental Resilience and Operational Efficiency

Designed for deployment in diverse environmental conditions, Optical Transport Network equipment operates reliably across wide temperature ranges. The compact form factor enables high-density installations, maximizing rack space utilization in both central offices and remote locations. With power consumption optimized below 100W per unit, operational expenses remain controlled even as network capacity scales.

Protocol Flexibility and Standards Compliance

Supporting industry standards including OpenROADM and OpenZR+, Optical Transport Network platforms ensure interoperability across multi-vendor environments. This open architecture approach protects investment while providing freedom to select best-of-breed components for each network segment.

Frequently Asked Questions

What makes an Optical Transport Network different from traditional transmission systems?

An Optical Transport Network utilizes coherent detection and digital signal processing to achieve significantly higher spectral efficiency compared to legacy intensity-modulated systems. This technology enables transmission rates of 400G and beyond on a single wavelength, with adaptive modulation that optimizes performance based on link conditions.

How does dispersion tolerance impact network design?

Modern Optical Transport Network equipment can tolerate dispersion levels up to ±40,000 ps/nm, eliminating the need for dispersion compensation modules on most fiber routes. This simplification reduces network complexity, lowers costs, and improves reliability by reducing the number of active components in the transmission path.

Can existing fiber infrastructure support these advanced systems?

Yes, Optical Transport Network solutions are designed to operate over standard single-mode fiber. The adaptive modulation and robust FEC capabilities allow deployment across both new and legacy fiber plants, including routes with varying quality levels. This backward compatibility protects existing infrastructure investments.

What service types can be transported over an Optical Transport Network?

Contemporary Optical Transport Network platforms support multiple service interfaces including 100 Gigabit Ethernet, OTU4, and FlexE. This flexibility allows operators to consolidate diverse traffic types onto a unified transport infrastructure, simplifying operations while reducing equipment footprint.

How do I determine the optimal modulation format for my network?

The choice of modulation format in an Optical Transport Network depends on three primary factors: required capacity, available OSNR budget, and fiber route distance. Higher-order modulation like DP-16QAM delivers maximum capacity over shorter, high-quality links, while DP-QPSK extends reach on longer or impaired routes.

What role does FEC play in optical transmission performance?

Forward Error Correction is fundamental to Optical Transport Network operation, enabling transmission at OSNR levels that would otherwise be insufficient. Advanced FEC algorithms can recover signals even when noise and impairments significantly degrade the optical signal, extending reach by hundreds of kilometers.

Future-Proofing Network Infrastructure

Investing in advanced Optical Transport Network technology provides a foundation for long-term network evolution. The software-defined capabilities and modular architecture ensure that capacity upgrades can be implemented through configuration changes rather than equipment replacement. As traffic patterns evolve and new services emerge, the inherent flexibility of these platforms allows operators to adapt quickly without disruptive infrastructure changes.

The convergence of coherent optics, intelligent software control, and open standards has transformed Optical Transport Network systems into strategic assets for organizations building next-generation networks. By delivering unprecedented capacity, reach, and flexibility, these platforms enable the bandwidth-intensive applications that will define the digital economy for years to come.

 

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