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dc.contributor.authorTurhal, Mehmet
dc.contributor.authorAlbayrak, Cenk
dc.contributor.authorMahmutoğlu, Yiğit
dc.contributor.authorTürk, Kadir
dc.date.accessioned2024-10-14T07:13:16Z
dc.date.available2024-10-14T07:13:16Z
dc.date.issued2024en_US
dc.identifier.citationTurhal, M., Albayrak, C., Mahmutoglu, Y., & Turk, K. (2024). Compound parabolic concentrator for LED-based underwater optical communication transmitter. Physical Communication, 67, 102511. https://doi.org/10.1016/j.phycom.2024.102511en_US
dc.identifier.issn1874-4907
dc.identifier.urihttps://doi.org/10.1016/j.phycom.2024.102511
dc.identifier.urihttps://hdl.handle.net/11436/9581
dc.description.abstractLaser sources have been used at the transmitter unit of underwater wireless optical communication (UWOC) systems since their invention. In recent years, light-emitting diodes (LEDs) have begun to be used as UWOC transmitters due to their low cost, long lifespan, and high energy efficiency. However, data transmission distances in UWOC systems using bare LEDs and LED arrays with collimating lens are limited due to LED's large divergence angles and insufficient gains provided by the low cost lens designs. In this paper, we propose to use a compound parabolic concentrator (CPC), whose transmission efficiency curve is very close to the ideal concentrator, as a collimator that narrows the divergence angle of LEDs to design low-cost UWOC transmitter with long communication distance. Using the Bouguer–Beer–Lambert channel model, we derived the received optical power expression at the receiver side for the LED-based UWOC system with CPC at the transmitter. Furthermore, unlike existing studies in the literature, the full spectrum of the LED has been taken into account when deriving the power expression. The results show that using the CPC collimator instead of a typical collimation lens in an LED-based UWOC system can narrow the divergence angle by approximately 10 times, resulting in a 70 dB increase in signal-to-noise ratio (SNR) at the receiver and up to a 20 times increase in the communication distance.en_US
dc.language.isoengen_US
dc.publisherElsevieren_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectCompound parabolic concentrator (CPC)en_US
dc.subjectLEDen_US
dc.subjectUnderwater wireless optical communicationen_US
dc.titleCompound parabolic concentrator for LED-based underwater optical communication transmitteren_US
dc.typearticleen_US
dc.contributor.departmentRTEÜ, Mühendislik ve Mimarlık Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.contributor.institutionauthorMahmutoğlu, Yiğit
dc.identifier.volume67en_US
dc.identifier.startpage102511en_US
dc.relation.journalPhysical Communicationen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US


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