
Fiber optic monitoring – precise, continuous, modular
Fiber optic networks are the backbone of modern communication and control systems, both in telecommunications, rail and road transport, and in energy and industrial infrastructure. At the same time, they are sensitive to external influences such as moisture, mechanical damage, kinks, or unauthorized access.
LANCIER Monitoring offers modular solutions for the monitoring of both active and passive fiber optic infrastructures. Depending on the technology used e.g. RM-Fiber for real-time attenuation analysis or OTDR for high-precision fault localization – our systems detect deviations quickly, support predictive maintenance, and help to minimize downtime across entire networks.

Why choose LANCIER for fiber optic monitoring?
Overview of your advantages:
Real-time attenuation monitoring with RM-Fiber or FiberTxA modules
Precise fault location with OTDR
Immediate alerts with our server-based UMS platform or via contacts
Passive monitoring of manholes and shafts based on fiber optics:
- Moisture sensors without power supply
- Access control without power supplyIntegration into existing control systems (e.g., with the UMS platform)
Monitoring of physical parameters such as humidity, temperature, wind speed, water levels, etc.
In-house hardware and software development for tailored customer solutions
One system for all network areas – compact, modular, expandable

Areas of application and types of use
LANCIER Monitoring systems are used wherever fiber optic networks need to be monitored securely and continuously, over long distances, at sensitive network transitions, or in critical infrastructure.
Typical applications:
Long-distance monitoring in utility and telecommunications networks
Condition monitoring of manhole covers, sleeves, technical rooms, and buildings
Monitoring passive optical networks (PON) with splitter structures
Real-time protection against tampering, unauthorized access, or environmental influences
Condition monitoring in network sections relevant to critical infrastructure
Passive humidity and environmental monitoring using fiber-based sensors
The systems can be integrated directly into new buildings or retrofitted into existing infrastructures with minimal effort but high impact on reliability, availability and operational security.
Monitoring passive optical networks (PON)
Monitoring passive optical networks (PON) presents particular challenges, as multiple subscribers are connected via splitters to a shared fiber. Fault localization and monitoring must therefore be especially precise and sensitive. LANCIER’s OTDR-based systems detect attenuation changes reliably up to the branching point with extremely short dead zones and high-resolution measurements.
Depending on the configuration, multiple fibers can be monitored in parallel using optical switches or WDM technology. Physical manipulations or access attempts in the splitter area can also be detected purely via fiber attenuation: passively, without the need for a power supply at the sensor location.
Measurement events are displayed locally, forwarded to higher-level systems, or seamlessly integrated into the UMS platform, enabling transparent, secure monitoring even in branched access networks.
Overview technical solutions
LANCIER Monitoring systems are built from modular components that can be combined to suit a wide range of fiber optic monitoring applications from backbone links to distributed access networks.
Among other things, the following are used:
RM-Fiber or FiberTxA for real-time attenuation monitoring
Ideal for detecting manipulation, degradation, or moisture ingress wherever immediate response is criticalOTDR systems for cyclic route measurement and precise fault localization with meter-level accuracy
Optical switches and WDM technology for efficient monitoring of multiple fibers or sensor paths using shared measurement resources
Sensor modules for detecting physical parameters such as access events, humidity, temperature, vibration, or flooding
Compact measurement stations for local data acquisition, alarm signaling, and communication
UMS platform for centralized visualization, event analysis, and integration into existing control or asset management systems
All components are designed for long-term operation in demanding environments. They are scalable, interoperable, and can be easily integrated into both new and existing network infrastructures.

System integration and communication
All LANCIER systems can be flexibly integrated into existing infrastructures. Measurement data and alarm messages are transmitted directly to existing control systems or our own UMS platform via standardized interfaces.
Communication via Modbus, Tx-Bus, Ethernet, or potential-free contact outputs
Visualization, long-term logging, and alarm forwarding via the UMS platform
Easy integration into network control or telecontrol technology
Access to status data anytime, anywhere
This creates a comprehensive monitoring system with clear connectivity, open architecture, and a centralized view of your infrastructure.












