Study of rain attenuation consequence in free space optic transmission

Rahman, A. K.; Anuar, M. S.; Aljunid, S. A.; Junita, M. N.

doi:10.1109/nctt.2008.4814239

Cited by 16 publications

(13 citation statements)

References 12 publications

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“…The visibility of FSO system depends upon the quantity of the rain. In case of heavy rain, water droplets have solid composed and it can either modify the optical beam characteristics or restrict the passage of beam as optical beam is absorbed, scattered, and reflected [8].…”

Section: Limitationsmentioning

confidence: 99%

“…In rain based study, a correlation of precipitation rates with rain attenuation is studied on the short wavelength (785 nm). The four-existing-model rain attenuation is utilized to find the result and measured data is compared with calculated results to determine the turbulence model [8]. The effects of rain intensity variation on its attenuation prediction are the focus of another study.…”

Section: Different Studies Based On Attenuation Effectmentioning

confidence: 99%

See 1 more Smart Citation

Free Space Optics: Current Applications and Future Challenges

Malik

Singh

2015

International Journal of Optics

211

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FSO is a communication system where free space acts as medium between transceivers and they should be in LOS for successful transmission of optical signal. Medium can be air, outer space, or vacuum. This system can be used for communication purpose in hours and in lesser economy. There are many advantages of FSO like high bandwidth and no spectrum license. The transmission in FSO is dependent on the medium because the presence of foreign elements like rain, fog, and haze, physical obstruction, scattering, and atmospheric turbulence are some of these factors. Different studies on weather conditions and techniques employed to mitigate their effect are discussed in this paper.

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Section: Limitationsmentioning

confidence: 99%

Section: Different Studies Based On Attenuation Effectmentioning

confidence: 99%

Free Space Optics: Current Applications and Future Challenges

Malik

Singh

2015

International Journal of Optics

211

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“…The geometric attenuations (or geometric loss) refer to losses that occurred due to the divergence of the optical beam between transmitter and receiver [7]. For Free Space Optics propagation, the beam diverges by some amount over the path from transmitter to receiver.…”

Section: Proceeding Of the International Conference On Advanced Scienmentioning

confidence: 99%

Effect of Rain Attenuations on Free Space Optic Transmission in Kuala Lumpur

Mustafa¹,

Supa’at²,

Charde³

2011

International Journal on Advanced Science, Engineering and Information Technology

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This research paper describes the effects of rain attenuation on the free space optical (FSO) transmission system. The entire research was conducted in the heart of Kuala Lumpur city-year 2001, as the city was using such systems (LAN-to-LAN & WLAN-to-WLAN) widely to connect the metropolitan areas for data transmission. The preliminary experiments were done using PAVLight product modeled PL-1G/1Tx/GigE which leaded to maximum reach of 700m distance with 810nm wavelength and also laser power of 14dBm. The data for rain intensities were obtained from measuring unit at UTM Jalan Semarak, Kuala Lumpur following the ITU protocols such as ITU-R P.1814 and ITU-R P.1817. The transmission and reception were achieved by using Continuous Wave (CW) Laser signals as transmitting signals and APD photo detector to receive it on the other end. The experiments were fully carried out for two conditions (heavy-rain and lighter rain or drizzle) with multiple repetitions. At last, the collected data were compiled and compared with other researcher's results. It was found to be the same as how the other researchers have obtained before for various cities worldwide. The results were found to be very satisfactory. It obeyed the theoretical aspects as higher the rain, higher the attenuations then. These results the degradation on the received signals. As a guide for future implementation of FSO systems for various atmospheric conditions in the metropolitan areas of Kuala Lumpur; we believed that this preliminary works may help.

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“…Basically, in FSO the impairments link is caused by air turbulence that produces a beam spreading, beam wander, scintillation and degradation of the coherence of the wave front [2] and hydrometers (rain and snow) and suspended water particles (fog represents the worst meteorological situation for FSO) that yield high losses due to scattering [3,7,8]. …”

Section: Introductionmentioning

confidence: 99%

Investigation on Heavy Precipitation Effects over FSO Link

et al. 2017

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Abstract. This paper has examined the performance of free space optic system and scattering effects over the laser propagation. Analysis result based on Optisystem simulation software and rain data collected from Malaysia Meteorological Department Perlis, which covering beneath the tropical rainforest weather. The measurement in a simulation using the real parameter from Laserbit system which using wavelength 785 nm ,0.5 -15mrad beam divergence, 70mW laser power and range between 100m -2500m. The result can estimate the intensity of rain to impair the link and alternative method to overcome the drawback system.

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Study of rain attenuation consequence in free space optic transmission

Cited by 16 publications

References 12 publications

Free Space Optics: Current Applications and Future Challenges

Free Space Optics: Current Applications and Future Challenges

Effect of Rain Attenuations on Free Space Optic Transmission in Kuala Lumpur

Investigation on Heavy Precipitation Effects over FSO Link

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