underwater optical communication 2012
ENGINEERING RESEARCH PAPERS

underwater optical communication 2012




Analysis of Underwater Environment and Establishment of Underwater Wireless Optical Communication Link
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ABSTRACT A major challenge facing ocean exploration and surveillance is how to quickly and accurately communicate the data obtained by the sensors or unmanned system to a surface ship or shore-based station. The primary reason for this challenge is that radio frequency 

An Underwater Optical Wireless Communication System Based on LED Source
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An analytical model of the power spatial distribution for underwater optical wireless communication
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Spatial distribution for Gaussian laser source In many practical underwater optical communication applications, laser sources are usually Gaussian distributed in free-space, whose optical power distribution in free- -space at z with initial power P0 is given by (10) 

A modulated pulse laser for underwater detection, ranging, imaging, and communications
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This loss of modulation depth has qualitative agreement to other studies where the impulse response of the underwater optical communication channel is being experimentally measured.16–19 A new Navy SBIR is underway that focuses efforts on packaging the modulation 

State-of-the-art and emerging solutions in optical wireless communications
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 Photonic Networks and Systems IT Security Underwater Communi- cations Private Households  Areas, eg Hospitals ? Unique feature of VLC: enables high-speed wireless underwater transmission blue- green (short reach) ? Resource exploration, oil + gas extraction, 

Advances in Underwater Acoustic Networking
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We briefly describe the typical communication architecture of an underwater network followed by a discussion on the basics on under- water acoustic propagation and the state of the art in acoustic communication techniques at the physical layer. 

Scattered photons as useable signal for underwater imaging
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Page 1. Scattered Photons as Useable Signal for Underwater Imaging Walton McBride1, Alan Weidemann1 Linda Mullen2, Alan Laux2, Derek Alley2 1Naval  underwater. Keywords: imaging, underwater, AUV, scatter. 1. BACKGROUND 

Submarine Optical Fiber Cable Systems for High Speed Growth Developments in Optical Communication Networks
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 50 Submarine Optical Fiber Cable Systems for High Speed Growth Developments in Optical Communication Networks MECS Information Engineering and Electronic

New Trends of Multiplexing Techniques Based Submarine Optical Transmission Links for High Transmission Capacity Computing Network Systems
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 To support this high transmission capacity, Alcatel has developed many technological innovations for the underwater equipment (optical fiber and repeaters) and the terminal equipment used for repeatered and unrepeatered links. 

Development of a spherical underwater robot equipped with multiple vectored water-jet-based thrusters
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shows the conceptual design and experimental prototype of our spherical under- water robot.  1 Overall design of the spherical underwater robot  One of the advantages of using acrylic is that it is transparent, and hence optical communication devices such as cameras 

Deepwater Applications for Brazilian Pre-Salt Exploration Using Underwater Sensor Networks
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 This acoustic network utilizes AUVs to collect data, mixing short-range optical communication with acoustic communication.  Recently, Ribeiro, Pedroza and Costa (2011) proposed an underwater monitoring system in a DTN network composed of sensors distributed over the 

Investigation of Various Throughput Improvement Techniques in DWDM Optical Networks (REVISED)
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 WAVELENGTH DIVISION MULTIPLEXING In optical communication, wavelength division multiplexing (WDM) is a technology which carries a number of  complex DWDM network data transmission system that would find an application in the NEMO underwater neutrino telescope 

Study and analysis of the optimum path-line of submarine cables in Persian Gulf and Oman Sea
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 Keywords: submarine cable, optical fiber, laying cable, optical communication 1. INTRODUCTION  Laying cables under water is a theoretical and also practical subject.  Underwater cables are designed with an analytical method. 

Distributed optical fiber vibration waveform sensing system based on compensating interferometer
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 been a hotspot in areas such as boundary safety monitoring, structural engineering monitoring and underwater acoustic detecting  application perspective in areas such as remote-distance petroleum and electric power transmission pipelines, optical communication cable, local 

Low-Cost, Low-Power, High-Capacity 3R OEO-Type Reach Extender for a Long-Reach TDMA-PON
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Page 1. 352 Kwangok Kim et al. © 2012 ETRI Journal, Volume 34, Number 3, June 2012 This paper proposes a low-cost, low-power, and high- capacity optical-electrical- optical-type reach extender that can provide 3R frame 

Development of Fiber Optic Acoustic Emission Sensors for Applications in Civil Infrastructures
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 The performance of the FOAES hydrophone was also evaluated experimentally by installing the sensing interferometer in a water tank to detect underwater acoustic signals generated by an AE 1474 Advances in Structural Engineering Vol. 15 No. 8 2012 

Conference 8426: Micro-structured and Specialty Optical Fibres
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 Berghmans, H. Thienpont, Vrije Univ. Brussel (Belgium) Fiber Bragg gratings are one of the most important elements of fiber technologies and found applications ranging from optical communication to all-fiber lasers. One of the recent 

An Overview of Routing Metrics for the Evaluation of Routing Protocols in Wireless Sensor Networks
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 buried underground or in a cave or mine used to monitor underground conditions whereas in Underwater WSNs [6, 7] sensor nodes and vehicles are deployed underwater.  The Communication Unit performs optical communication using radio frequencies and multi hop routing. 


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