Author Archives: FOSREM

OCTOBER field experiment 6/7-10-2023

Thanks to the help of ISB Sp. z o. o. we were able to participate in field tests using artificial seismic events triggered by explosions. From October 6 to 7, 2023, we tested new FOS6 sensors in Szopowo, Poland (near the border with Ukraine). For testing, we used explosive charges of 5kg TNT equivalent. The purpose of the tests is to check the possibility of detecting and recognizing artificial seismic events such as explosions.

A total of 11 different rotational fibre optic sensors were used in the tests, including 2 x FOS6 (3D-6C), 3xFOS5 (1D-1C), 3xMSMS1 (3D-6C) and 3xMSMS2 (3D-3C). The sensors were placed at a distance of 150 to 1000 m from ground zero.

The tests included three explosions:

  • A – 5 kg, 3 m below the ground surface with surface discharge
  • B – 5 kg, 4.5 m below the ground surface without surface discharge,
  • C – 2 x 5kg, 4.5 m below the ground surface with a distance of 5 m between loads

2023-10-06 18:00 UTC

The test installation includes a Power & Communication Unit and two FOS6 sensors.

FOS6 PCU – connected to sensors and Internet
Michal Dudek PhD on work.
Two FOS6 connected and protected against water.

2023-10-07 13:00 UTC

Test control center
Explosion place (before)
Explosion #A

2023-10-07 16:30 UTC

The explosions were done. The sensors measured a value of up to approximately 100E-6 rad/√(s) over a distance of 1 km. All data obtained from the sensors have been recorded and will be analyzed.

We dig out the sensors after the tests
Our FOS6 sensors after underground tests lasting 24 hours (calibration and explosions)

Testing team:

  • Anna Kurzych PhD, Michał Dudek PhD, Jerzy Kowalski PhD, Paweł Zinówko, Karol Konarski (ELPROMA)
  • Rafał Kiełbik PhD, Piotr Zając PhD, Grzegorz Jabłoński PhD (Lodz University of Technology)

FOSREM at 6th IWGoRS Meeting in Paris, France, 21-23 November, 2022

The 6th IWGoRS Workshop was held at the Institut de Physique du Globe (IPG) in Paris. The workshop re-focused on every aspect of gradient-related ground motion, including rotation and deformation recording, instrumentation, earthquake sources, custom rheology, inverse problems, surveying, seismic engineering, long-term seismology, planetary seismology, derivative rotation and strain, correlation studies noise, ring laser technology, Earth rotation, seismic decoupling, fundamental physics, and more.

Anna Kurzych Ph.D., from FOSREM team showed presentation: “Recording of the rotational events in Poland – Time horizon & Fascinating Future of Fiber-Optic Seismograph

Members of the 6th IWGoRS Workshop

Anna Kurzych Ph.D. and Jerzy K. Kowalski Ph.D. show the sensor and its applications.


The International Timing and Sync Forum, the world’s largest event on timing and synchronisation, kicked off on Nov 7th in Düsseldorf. For years, industry leaders have been coming together at the conference to showcase their companies’ latest synchronisation solutions. 

All visitors are welcome to visit the Elproma Electronics booth, where Tomasz Widomski will answer all questions related to the revolutionary project and modern time servers

Elproma’s stand with FOS5 – Fiber Optics Seismology Sensor (in the middle)
Tomasz Widomski @ ITSF 2022


FOSREM – the next generation Multipurpose Earth & Space Photonic Sensor with Big Data output for FOG (gyroscopes) and seismograph dedicated for ROTATIONAL SEISMOLOGY

ELPROMA is presenting FOSREM at Japan CAETEC 2022

FOSREM at IAC 2022 Paris

During September 18-22, 2022, Paris, France, will host the world’s most important event in the space sector – the International Astronautical Congress (IAC). On this occasion, the Polish Space Agency (POLSA) will organize an exhibition booth promoting the Polish space sector. The POLSA booth will additionally provide a gathering point for representatives of the Polish space sector at IAC, so that participants may conveniently meet with Polish aerospace companies in one location.

POLSA stand – FOSREM in the middle (blue box)
FOSREM an IAC 2022 Paris

6th IWGoRS Meeting in Paris, France, 21-23 November 2022

We will be there! We will show our new FOS6 solutions and the system of ultra-precise synchronisation of seismological measurements. January 2022, we started a new project, FOS6, the 3-dimensional precise FOG-based seismometers. We got €1.5 mln funding from the National Centre for Research and Development. Our team is now part of Elproma Elektronika. We implemented this project together with the Lodz University of Technology.

4th IWGoRS Meeting in Tutzing, Germany, 20-23 June, 2016

The 4th IWGoRS workshop were held at the Evangelische Akademie Tutzing (near Munich, Germany), June 20-23, 2016. The workshop was focus on any aspect of rotational ground motion including the recording of rotations, instrumentation, earthquake sources, non-standard rheologies, inverse problems, geodesy, earthquake engineering, long-period seismology, array-derived rotation, noise-correlation studies, ring laser technology, Earth’s rotation, problems of fundamental physics and others.

Our team  has prepared one oral presentation and two-day demonstration of mobile Fosrem System in action.  The presentation given by Prof. Leszek R. Jaroszewicz is avaiable here. Also Fosrem System data sheet is avaiable for download.