TY - GEN
T1 - Minimizing the temporal fluctuation in the signal spectral of FSO communications to improve BER performance under the influence of atmospheric turbulence
AU - Darusalam, Ucuk
AU - Priambodo, Purnomo Sidi
AU - Rahardjo, Eko Tjipto
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/1/29
Y1 - 2018/1/29
N2 - The optical propagation of free-space optical (FSO) communications under the influence of atmospheric turbulence exhibits deterioration of signal spectral. By this nature, fiber-detection method that is implemented in the receiver system frequently, cannot overcome the turbulence effects. In order to improve the fiber-detection method, an optical spatial filter (OSF) that is composed of cone reflector, pinhole and multi-mode fiber is proposed as a detection method. It aims to increase intensity of signal spectral and signal power by suppressing temporal fluctuation. Thus performance improvement of FSO can be achieved by the OSF. The measurements of signal spectral from the OSF are compared to fiber-detection method. The OSF is intalled in rear focus spot of receiver lens before photodetector. The experiment results show significant improvement in suppressing temporal fluctuation in signal spectral from the OSF. (SNR) increases that are 36.5 dB, 37.5 dB, 37.7 dB, and 38.2 dB for DP1, DP2, DP3, and DP4, respectively. (BER) are produced more lower that are 10-9 to 10-12 by OSF. Those performances improvement is achieved higher by the OSF compared to fiber-detection method. The outcome of this work is recovering signal spectral that is deteriorated caused by turbulence effects modulation into optical propagation. Hence the OSF can be implemented for integrating FSO with optical fiber communication system in order to enhance bit-error-rate and signal-to-noise ratio performances.
AB - The optical propagation of free-space optical (FSO) communications under the influence of atmospheric turbulence exhibits deterioration of signal spectral. By this nature, fiber-detection method that is implemented in the receiver system frequently, cannot overcome the turbulence effects. In order to improve the fiber-detection method, an optical spatial filter (OSF) that is composed of cone reflector, pinhole and multi-mode fiber is proposed as a detection method. It aims to increase intensity of signal spectral and signal power by suppressing temporal fluctuation. Thus performance improvement of FSO can be achieved by the OSF. The measurements of signal spectral from the OSF are compared to fiber-detection method. The OSF is intalled in rear focus spot of receiver lens before photodetector. The experiment results show significant improvement in suppressing temporal fluctuation in signal spectral from the OSF. (SNR) increases that are 36.5 dB, 37.5 dB, 37.7 dB, and 38.2 dB for DP1, DP2, DP3, and DP4, respectively. (BER) are produced more lower that are 10-9 to 10-12 by OSF. Those performances improvement is achieved higher by the OSF compared to fiber-detection method. The outcome of this work is recovering signal spectral that is deteriorated caused by turbulence effects modulation into optical propagation. Hence the OSF can be implemented for integrating FSO with optical fiber communication system in order to enhance bit-error-rate and signal-to-noise ratio performances.
KW - beam wander
KW - free-space optical communications
KW - optical spatial filters
KW - scintillation
KW - temporal fluctuation
KW - turbulence effects
UR - http://www.scopus.com/inward/record.url?scp=85047295696&partnerID=8YFLogxK
U2 - 10.1109/BCWSP.2017.8272568
DO - 10.1109/BCWSP.2017.8272568
M3 - Conference contribution
AN - SCOPUS:85047295696
T3 - 2017 International Conference on Broadband Communication, Wireless Sensors and Powering, BCWSP 2017
SP - 1
EP - 5
BT - 2017 International Conference on Broadband Communication, Wireless Sensors and Powering, BCWSP 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 International Conference on Broadband Communication, Wireless Sensors and Powering, BCWSP 2017
Y2 - 22 November 2017 through 23 November 2017
ER -