NTT demonstrated a new optical fiber monitoring technology that significantly advances the development of all-photonics networks. This technology allows for the visualization of end-to-end fiber-optic links without the need for dedicated measuring equipment, providing an efficient and accurate method to monitor and maintain optical networks.
In a joint experiment with Duke University and NEC Laboratories America, NTT achieved the world’s first high-accuracy demonstration in a North American field-deployed environment simulating a commercial network.
The core of this technology, Digital Longitudinal Monitoring (DLM), uses advanced digital signal processing to visualize the optical signal power distribution along fiber-optic links in just a few minutes. This breakthrough enables network operators to diagnose and maintain optical connections more rapidly and accurately, reducing the time and cost associated with traditional methods. Additionally, the technology’s ability to extend monitoring capabilities in four dimensions—including time, frequency, and polarization—enhances its potential to detect and address network anomalies.
The demonstration marks a significant step towards the realization of digital twins in optical networks, a concept where virtual replicas of physical networks are used to predict performance and preemptively address issues. This technology is expected to play a crucial role in the ongoing development of NTT’s IOWN (Innovative Optical and Wireless Network) All-Photonics Network (APN), furthering the goal of creating a high-capacity, low-latency communication infrastructure.
- Technology: Digital Longitudinal Monitoring (DLM)
- Demonstration: Successful field test in North America
- Capabilities: Visualization of optical signal power in multiple dimensions
- Application: Enhances monitoring and maintenance of optical networks, supports the development of digital twins
