Manhole, FTTx cabinet, entrance & vandalism security

Cabinet, entrance &  vandalism monitoring

Protect your critical infrastructure!

Using our fiber optic sensing solution you can detect intrusion and vandalism attempts already in the early stage giving you valuable time to take the appropriate action.

The monitoring system consists of specially designed passive optical sensors and an monitoring unit located at a re-mote site. The connection between unit and sensors is ensured via standard telecommunication optical fibers, e.g. dark fibers of an existing fiber optic network can be used. Our solution is most economical for a large area of monitored objects, which are not supplied with electricity

The protection of your property and ensuring continuity of provided services can be a key issue especially in places without electricity or in hazardous areas where traditional ways of monitoring are very limited or almost impossible.

The sensor has been specifically designed to detect various methods of attacking protected structures and reject known environmental activity and potential false alarm scenarios.

Main Features:

  •  100% passive sensor, no power needed at monitoring point
  •  Leverage existing dark fibers
  •  Detect attempts in early stage
  •  Real-time monitoring system – immediate detection
  •  Highest security level
  •  EMI immunity and explosion safety


  • Telecom street cabinets - PON, FTTx
  • Cabinets, doors, entrances in explosive, dangerous areas
  • Pipeline shaft covers
  • Manholes, handholes
  • Fiber optic security
  • Part of large sensors network - temperature, pressure, strain,...

Application note

Monitoring scheme

Do you want to know more about this application? Feel free to ask.

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Do you know:

we can provide you the OFLS light source with any other laser diode or/and in OEM version?

Broadband light sources



202225. 4.

Invitation to SENSOR+TEST 2022

Let us invite you to visit us at the international SENSOR+TEST 2022 exhibition, which will take place from 10 to 12 May 2022 in Nuremberg.

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