Experimental investigation on the effect of wavelength on aperture averaging in FSO communications

Name: Experimental investigation on the effect of wavelength on aperture averaging in FSO communications
Author: Nouri, Hatef, Uysal, Murat

İsim	Experimental investigation on the effect of wavelength on aperture averaging in FSO communications
Yazar	Nouri, Hatef, Uysal, Murat
Basım Tarihi:	2020-06-01
Basım Yeri	- The Optical Society
Tür	Süreli Yayın
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0146-9592
Kayıt Numarası	f0549201-1380-4509-9720-afd663572916
Lokasyon	Electrical & Electronics Engineering
Tarih	2020-06-01
Örnek Metin	Atmospheric turbulence is a major impairment in free-space optical (FSO) communication systems. Based on the fact that the size of receiver aperture is much larger than operation wavelength, aperture averaging extracts inherent receiver diversity gains and can be used as an effective fading mitigation technique. In this Letter, we consider the three most common wavelengths used in telecommunications, namely 1550, 1310, and 850 nm, and present a comparative performance evaluation of aperture averaging under the same emulated atmospheric conditions. Our emulator is in the form of an atmospheric chamber equipped with adjustable heaters, coolers, and fans to create the desired level of turbulence. Our results demonstrate that by changing the wavelength and/or aperture size, a strong turbulence condition with Gamma-Gamma statistics can turn into a weak turbulence condition with log-normal statistics. Such a phenomenon can be observed even for relatively small aperture sizes if the wavelength is sufficiently high.
DOI	10.1364/OL.389808
Cilt	45

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Experimental investigation on the effect of wavelength on aperture averaging in FSO communications

Yazar Nouri, Hatef, Uysal, Murat

Basım Tarihi 2020-06-01

Basım Yeri - The Optical Society

Tür Süreli Yayın

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0146-9592

Kayıt Numarası f0549201-1380-4509-9720-afd663572916

Lokasyon Electrical & Electronics Engineering

Tarih 2020-06-01

Örnek Metin Atmospheric turbulence is a major impairment in free-space optical (FSO) communication systems. Based on the fact that the size of receiver aperture is much larger than operation wavelength, aperture averaging extracts inherent receiver diversity gains and can be used as an effective fading mitigation technique. In this Letter, we consider the three most common wavelengths used in telecommunications, namely 1550, 1310, and 850 nm, and present a comparative performance evaluation of aperture averaging under the same emulated atmospheric conditions. Our emulator is in the form of an atmospheric chamber equipped with adjustable heaters, coolers, and fans to create the desired level of turbulence. Our results demonstrate that by changing the wavelength and/or aperture size, a strong turbulence condition with Gamma-Gamma statistics can turn into a weak turbulence condition with log-normal statistics. Such a phenomenon can be observed even for relatively small aperture sizes if the wavelength is sufficiently high.

DOI 10.1364/OL.389808

Cilt 45