Photo-reception properties of common LEDs

• Autorzy: Kowalczyk, M. , Siuzdak, J.
• Języki publikacji: EN

Abstrakty

EN

The article proves that common LEDs may act as photodetectors with limited sensitivity, if they are polarized with an appropriate reverse voltage. The measured responsivities are ranged between 0.002 and 0.156 A/W and they depend on the LED type. The only one exception are white (phosphorescent) LEDs which do not exhibit any photosensitivity. There have also shown that a bandwidth of LEDs, which were examined in a role of photodetectors, is of a few tens of MHz, which is an order of magnitude greater than their modulation bandwidth as transmitters. The reasons of the observed LEDs behaviour are explained theoretically. The obtained results are indicated that some of them may be used as both transmitters and receivers in the VLC links working in a bi-directional half-duplex mode.

Słowa kluczowe

EN

LEDs as photo-detectors; visible light communication (VLC); bi-directional transmission

• Czasopismo: Opto-Electronics Review
• Rocznik: 2017
• Tom: Vol. 25, No. 3
• Strony: 222--228
• Opis fizyczny: Bibliogr. 28 poz., il., rys., wykr.

Twórcy

autor

Kowalczyk, M.

• Institute of Telecommunications, Warsaw University of Technology, 15/19 Nowowiejska Str., 00-665, Warsaw, Poland,

autor

Siuzdak, J.

• Institute of Telecommunications, Warsaw University of Technology, 15/19 Nowowiejska Str., 00-665, Warsaw, Poland

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)

Identyfikatory

DOI

10.1016/j.opelre.2017.06.009