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23 May 2023 A multiplexed FBG-based sensor platform for flow and temperature measurements in the Baltic Sea
A. Dzipalski, J. A. S. Morton, N. Papachristou, R. R. J. Maier, W. N. MacPherson, A. Ristolainen, M. Kruusmaa, E. Reilent, B. J. Wolf, P. Pirih, S. M. van Netten, I. Shuhova, U. Lips, N. McFarlane, R. Macleod, M. Hendry, J. Sheehy, M. Almoghayer, N. Rojas, G. Davies, A. Hakim, A. Ng
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Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 1264307 (2023) https://doi.org/10.1117/12.2679756
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium
Abstract
In this paper a multiplexed multi-parameter marinized sensory array is described. This was deployed on the continental slope off the Keri Island marine observatory in the Gulf of Finland (Estonia). The sensor array is made up of 4 measurement stations which are connected in series. Across these measurement stations, a total of 16 temperature sensors, 4 attitude sensors (each consisting of 3 individual fiber sensors) and 16 flow sensors were successfully deployed. They were addressed over 1.1 km via 20 single-mode (SMF-28e) optical fibers contained in a single marine compliant ruggedized umbilical. The bio-inspired fiber optic flow sensors are designed to mimic the behavior of the superficial neuromasts naturally found as part of the lateral line sensory organ present in fish. The sensor is composed of optical fibers inscribed with Fiber Bragg Gratings glued together in a polymer matrix which are then encapsulated in a polyurethane shell. The sensors response has been tested in DC flows in a tow tank and have demonstrated the ability of measuring flow speed from 0.05 ms-1 to 2.5 ms-1. The main aim of the deployment was to demonstrate the capabilities of fiber sensor technology for long-term oceanographic applications. The measurement period described lasted over two months and the sensor system performed well in comparison with data was gathered from commercial instrumentation available.
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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A. Dzipalski, J. A. S. Morton, N. Papachristou, R. R. J. Maier, W. N. MacPherson, A. Ristolainen, M. Kruusmaa, E. Reilent, B. J. Wolf, P. Pirih, S. M. van Netten, I. Shuhova, U. Lips, N. McFarlane, R. Macleod, M. Hendry, J. Sheehy, M. Almoghayer, N. Rojas, G. Davies, A. Hakim, and A. Ng "A multiplexed FBG-based sensor platform for flow and temperature measurements in the Baltic Sea", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 1264307 (23 May 2023); https://doi.org/10.1117/12.2679756
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KEYWORDS
Sensors
Fiber Bragg gratings
Multiplexing
Ocean optics
Detector arrays
Quantum sensors
Temperature metrology
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