Key Differentiators of Prisma’s Next-Generation Solution

Prisma’s groundbreaking solution overcomes the limitations of other fiber-sensing systems by using HYPERSCAN fiber-sensing, which increases signal amplitude and measurement bandwidth; advanced signal processing, which allows you to obtain a linear map of the acoustic/seismic profile; and detection & classification algorithms, which harnesses the high SNR, frequency content, phase correlations, and linear amplitude to classify events and distinguish targets of interest.

Key differentiators of Prisma’s system include:

  • Its patented Smart Amplification technology 

  • The use of standard, pre-deployed optical cables 

  • Implementation of Big Data and machine learning techniques.

Smart Amplification

Prisma’s patented Smart Amplification technology provides a new architecture that increases the propagating light pulse amplitude while it travels along the fiber, thereby increasing the detection reach of its infrastructure monitoring solution from between 10 and 20 km – i.e., what’s common using other platforms – to as much as 100 km. 

Prisma’s Smart Amplification technology uses high-order Raman amplification to amplify the propagating light pulse deep in the fiber, after it has been significantly attenuated due to the distance it traveled along the fiber. Furthermore, this smart bi-directional amplification process amplifies the Rayleigh backscattered light as well - thus further enhancing the detected light amplitude.

This patented state of the art technology allows customers to obtain a true 100 km with a single system. 

 Prisma’s patented Smart Amplification technology allows you to:

  • Overcome pulse and back-scattered attenuation

  • Amplify deep within the fiber 

  • Access only a single fiber end

Use of Pre-Deployed Cables in Conduits or Concrete Ditches

The Prisma system’s ability to couple more light into the fiber - together with its smart amplification capability - significantly improves its sensitivity. This means it can be used effectively to monitor even optical fibers that are very poorly coupled to the environment, such as fibers inside conduits and concrete ditches. 

This eliminates the need to deploy new fiber cables dedicated for fiber sensing, and opens up the possibility of utilizing standard, pre-deployed fiber-optic cables for long-range infrastructure monitoring. 

Part of what makes Prisma’s solution unique is that it works well with this very common and standard asset. In fact, most of our customers already have pre-deployed fiber-optic cables, which are situated within conduits, primarily because they were laid for telecommunications not for fiber sensing. Use of these cables sharply reduces the cost of deploying Prisma’s system, as can be seen in this image:

The images show two waterfall maps of a human digging 15 meters from a pipeline. The monitoring fiber cable was a standard telecommunication fiber cable laid in a plastic conduit near the pipeline. In the left image, we can see a person digging detected at a range of 7 km. In the right image, we can see a person digging detected at a record length of 100 km.

This image highlights Prisma’s unique system capabilities – a record detection range of 100 km and the use of pre-deployed fiber cables, placed even in a plastic conduit or a concrete ditch, for sensing without performances degradation. 

 

For more information about this case study please see PDF

Big Data & Machine Learning

Prisma’s solution applies Big Data techniques to raw data of unparalleled quality. Data sets are several orders of magnitude wider, with significantly higher SNR (signal-to-noise ratio) levels – leading to very high detection probability and advanced target classification. 

Our richer data set allows us to measure the acoustic signals more accurately. By leveraging this data set and implementing machine learning techniques, we are able to achieve more exact classification and dramatically reduce the system’s false alarm rate (FAR).

PRISMA PHOTONICS Ltd.

97 Rokach Blvd

Tel-Aviv 6153101

Israel

© Prisma Photonics Ltd. All rights reserved 2020

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