Design of optical fibre based highly sensitive acoustic sensor for underwater applications

Johny, Jincy; Smith, Thomas L.; Bhavsar, Kaushalkumar; Prabhu, Radhakrishna

doi:10.1109/oceanse.2017.8084974

Cited by 7 publications

(3 citation statements)

References 29 publications

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“…Their combination can improve the overall performance of the sensor system in terms of power, energy scaling and discrimination of cross-sensitivities [133,134]. The reflectivity peaks from the PCF-FBG sensor have inconsistent sensitivity to external parameters which helps to attain multi-parameter measurement simultaneously, offering good stability and a wide range of broadband tuning [135][136][137][138].…”

Section: Optical Fibre-based Multiparameter Sensorsmentioning

confidence: 99%

Optical Fibre-Based Sensors for Oil and Gas Applications

Johny

Amos

Prabhu

2021

Sensors

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Oil and gas (O&G) explorations moving into deeper zones for enhanced oil and gas recovery are causing serious safety concerns across the world. The sensing of critical multiple parameters like high pressure, high temperature (HPHT), chemicals, etc., are required at longer distances in real-time. Traditional electrical sensors operate less effectively under these extreme environmental conditions and are susceptible to electromagnetic interference (EMI). Hence, there is a growing demand for improved sensors with enhanced measurement capabilities and also sensors that generates reliable data for enhanced oil and gas production. In addition to enhanced oil and gas recovery, the sensing technology should also be capable of monitoring the well bore integrity and safety. The sensing requirements of the O&G industry for improved sensing in deeper zones include increased transmission length, improved spatial coverage and integration of multiple sensors with multimodal sensing capability. This imposes problems like signal attenuation, crosstalks and cross sensitivities. Optical fibre-based sensors are expected to provide superior sensing capabilities compared to electrical sensors. This review paper covers a detailed review of different fibre-optic sensing technologies to identify a feasible sensing solution for the O&G industry.

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Section: Optical Fibre-based Multiparameter Sensorsmentioning

confidence: 99%

Optical Fibre-Based Sensors for Oil and Gas Applications

Johny

Amos

Prabhu

2021

Sensors

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“…The output of the differential amplifier as a function of path length difference is a sine wave [15]. In order to monitor low frequency underwater acoustic signal, the PCF based acoustic sensor was reported by Dnyandeo et al [16].…”

Section: Interferometric Ultrasound Detectormentioning

confidence: 99%

A Comprehensive Study on Highly Sensitive Photonics Based Acoustic Sensors for Under Water Applications

Kumar¹,

Sreerangaraju²

2018

EAI Endorsed Transactions on Smart Cities

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By referring few researcher works which is related to the work of optical sensor and able to detect the acoustic signal, this review paper provides the detailed study of acoustic signal in under water. Researchers has worked with the optical sensor and emerged as great promising sensing device. From various research papers it is observed that the detection of acoustic signal is done with the help of various optical sensors. The various sensors are fiber bragg grating (FBG) sensor, fiber optic interferometric sensor and Mach zehnder interferometer (MZI) sensor. So this review paper covers all these sensors and their application with a particular focus on the different structure of optical sensor. The structure of the various sensors and their application is discussed from the different research paper.The overall work is reported and corresponding result is demonstrated. From the demonstrated work it has been observed that with good quality and proper sensitivity in all optical sensors are able to detect the acoustic signal for under water due to their compact size and able to provide accurate results.

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“…Optical fibre sensors such as fibre Bragg grating (FBG) are apt for this application in these environments compared to traditional electro-mechanical devices [5]. A subtype of Distributed Bragg Reflector, FBGs are popular research subjects for several advantageous properties in application such as structural health monitoring [6], acoustics [7] and beyond [8,9]. Careful selection of these sensors can result in robust, accurate, reliable sensing of both temperature and strain on the same line of fibre without direct interference from the effects of one another whilst utilising multiplexing.…”

Section: Introductionmentioning

confidence: 99%

Optical fibre-based sensors for monitoring offshore floating photovoltaic farms

Stewart,

Jairaiaz Joseph,

Johny

et al. 2023

OCEANS 2023 - Limerick

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Solar photovoltaic farms are seeing increasing expansion into new domains (offshore) in order to harvest the sunlight as society pushes towards reaching Net Zero by 2050. However, photovoltaics are bound by physics, parameters such as temperature and strain varying result in changes in efficiency. Predictive maintenance through remote sensing can also save resources particularly in a domain where equipment and personnel are relatively expensive. This work represents the first investigation into the utilisation of Fibre Bragg Gratings (FBG) for offshore floating solar farms. It proposes a robust multiplexed network of FBG sensors to monitor these parameters in the harsh oceanic environment where equivalent electromechanical equivalents would fail. Using Super luminous LED (Light Emitting Diode), FBG interrogators, multiplexing techniques and the sensors themselves reliable, effective strain and temperature measurement can be made. A series of MATLAB simulations into how FBGs can be engineered to achieve these results were carried out. The findings suggest that applied to a select case study, 2 strain and 49 temperature sensors can be multiplexed on a single line of fibre. An experiment was also carried out that placed FBGs on an aluminum solar panel frame that suggests a bandwidth of 13.32μm would be needed to encompass the range in that specific study.

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Design of optical fibre based highly sensitive acoustic sensor for underwater applications

Cited by 7 publications

References 29 publications

Optical Fibre-Based Sensors for Oil and Gas Applications

Optical Fibre-Based Sensors for Oil and Gas Applications

A Comprehensive Study on Highly Sensitive Photonics Based Acoustic Sensors for Under Water Applications

Optical fibre-based sensors for monitoring offshore floating photovoltaic farms

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