Modulation Techniques of Free Space Optics using Various Link Ranges
S.S.S Kalyan1, B. John Philip2, P.M.V.S Rajesh3, A. Poojitha4, Khalid Muhammad5
1S.S.S Kalyan*, Department of ECE, KLEF, Vaddeswaram, AP, India.
2B. John Philip, Department of ECE, KLEF, Vaddeswaram, AP, India.
3P.M.V.S Rajesh, Department of ECE, KLEF, Vaddeswaram, AP, India.
4A. Poojitha, Department of ECE, KLEF, Vaddeswaram, AP, India.
5Khalid Muhammad, Department of ECE, KLEF, Vaddeswaram, AP, India
Manuscript received on November 15, 2019. | Revised Manuscript received on 20 November, 2019. | Manuscript published on December 10, 2019. | PP: 2952-2955 | Volume-9 Issue-2, December 2019. | Retrieval Number: B7352129219/2019©BEIESP | DOI: 10.35940/ijitee.B7352.129219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: Free space optics is the present trend, which enables the communication to achieve the expected data rates for the increasing user demands. The utility of FSO in free space medium enables higher data rates than the conventional microwave links for efficient communication. Several researchers have performed the analysis of free space optics by use of different modulation techniques and optimization of the link budget in free space optical links. In this work, CW laser transmitting source ranging to 10dB of output level, link ranges of 500, 1000 and 1500 mts with attenuation values of 0.2, 0.7 and 0.9 dB/Km respectively are considered. The analysis of free space optics is carried out by using various modulation techniques such as ASK, PSK, FSK, MZ, EA, Dual Drive MZ and it is observed that Dual Drive MZ modulation performs well when compared with the other modulation techniques.
Keywords: Free Space Optics, Attenuation, Link ranges, Optical Communication, Quality factor.
Scope of the Article: Communication