Distributed and Multiplexed Fiber-Optic Sensors

Kersey, Alan D.; Dandridge, A.

doi:10.1364/ofs.1988.wdd1

Cited by 6 publications

(4 citation statements)

References 51 publications

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“…At present, DMD chip is mature and highly reliable [45]. At the same time, it entitles high frequency of flip and short response time (2∼ 5 μs) [46], [47], which renders very fast controlling. The drawback is that most of the current DMD can only be locked at two predefined angles [48], [49], which can not be accurately deflected to angles in the middle.…”

Section: Opa Implementationmentioning

confidence: 99%

Optical Mobile Communications: Principles, Implementation, and Performance Analysis

Zhang

Dang

et al. 2019

IEEE Trans. Veh. Technol.

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Owing to the rapid growth of mobile data communication and spectrum crunch at lower radio frequency, utilizing high frequency spectrum such as millimeter wave for ultra-high data rate mobile communications becomes necessary. Yet the propagation behaviors of high frequency radio waves make mobile communications rather challenging with a lot of technical problems, such as very large propagation loss. In this paper, we propose a novel approach, referred to as optical mobile communications (OMC), to cater to the need for high data rate mobile communication by exploiting optical beams. Taking spatial light modulator as an exemplary means of laser beam adaptation, we first present the system model of OMC. It is shown that the downlink channels in OMC are different from that in a system equipped with antennas emitting radio frequency signals. That is, the OMC channels for different mobile terminals are controllable to a large extent. This new feature creates a new dimension for performance optimization of OMC. We then investigate the achievable rate region of OMC using different multiple access schemes in a two-user downlink system. Numerical results show that expanded rate region can be achieved in OMC compared to the case where channels are not controllable, which shows the potential of OMC as a promising technique. Index Terms-Optical mobile communications, multiple access, achievable rate region, beam adaptation. I. INTRODUCTION W ITH the fast development of mobile communication systems (MCSs), radio spectrum has a limitation to provide extreme high throughput services [1]-[4]. On the other hand,

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Section: Opa Implementationmentioning

confidence: 99%

Optical Mobile Communications: Principles, Implementation, and Performance Analysis

Zhang

Dang

et al. 2019

IEEE Trans. Veh. Technol.

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“…Since no electrical signal is carried on the fiber, it is safer in harsh environments like presence of explosive gases or fuels. In some applications, weight and volume may not be critical but for many other applications, weight and volume can be extremely important, and minimizing these can be very critical [13,14].…”

Section: Flow Of Electrons and Photons In Wires And Fibersmentioning

confidence: 99%

Review on Developments in Fiber Optical Sensors and Applications

Annamdas¹

2012

IJME

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The last couple of decades had witnessed a steep rise in extensive research of optoelectronic and fiber optical communication fields, which resulted in applications focused initially in military, aerospace equipments, and later in health monitoring for medicine, heritage culture and various engineering fields. Health monitoring has attracted the effort of many engineers throughout the world and is fast emerging as a pioneering field. It is helping to improve world economy in two ways; first, directly by providing longevity to all the important structures and secondly, by prevention of untimely failure leading to loss of life and money. This field is very vast, consisting of traditional monitoring methods as well as smart system based methods. The fiber optics belong to finest class of smart materials, there are many types and classifications of fiber optics based on necessity, manufacturer and the end user. This paper, gives a complete over view of fiber sensing systems and their usefulness. In addition, it highlights some of the general fiber optics available in the market with selected examples.

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“…The underlying theory of OTDR and its relevance to fibre optic sensors is well understood and widely documented at this stage (Barnoski et al 1976, Kersey andDandridge 1988) and therefore it is not considered in this section.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

An optical fibre sensor forin situmeasurement of external species in fluids based on artificial neural network pattern recognition

et al. 2001

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An optical fibre sensor system capable of detecting contaminants (e.g. particles, inorganic or organic species) in water and other fluids is reported. In this article experimental results are presented for a single optical fibre sensor located at a distance of 150 m from the transmitter/receiver of the system. The fibre is addressed using an optical time domain reflectometer (OTDR) in order to achieve the spatial resolution (along the fibre length) necessary for this investigation. Novel signal processing techniques involving artificial neural networks and pattern recognition have been applied to the signals arising from the sensor in order to allow cross-sensitivity effects, e.g. from fouling due to calcification, to be extracted from the real measurand, e.g. alcohol content.

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Distributed and Multiplexed Fiber-Optic Sensors

Cited by 6 publications

References 51 publications

Optical Mobile Communications: Principles, Implementation, and Performance Analysis

Optical Mobile Communications: Principles, Implementation, and Performance Analysis

Review on Developments in Fiber Optical Sensors and Applications

An optical fibre sensor forin situmeasurement of external species in fluids based on artificial neural network pattern recognition

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