This paper is published in Volume-4, Issue-3, 2018
Area
Optical Communication
Author
Malsawmdawngliana, Dr. K. Kalimuthu, Dr. Sabitha Gauni
Org/Univ
SRM Institute of Science and Technology, Chennai, Tamil Nadu, India
Keywords
Lasers, LED, QAM, Photodetector, Optical wireless channel, Blue lasers, Demodulation, PIN diode.
Citations
IEEE
Malsawmdawngliana, Dr. K. Kalimuthu, Dr. Sabitha Gauni. Underwater optical wireless communication analysis using blue laser diode, International Journal of Advance Research, Ideas and Innovations in Technology, www.IJARIIT.com.
APA
Malsawmdawngliana, Dr. K. Kalimuthu, Dr. Sabitha Gauni (2018). Underwater optical wireless communication analysis using blue laser diode. International Journal of Advance Research, Ideas and Innovations in Technology, 4(3) www.IJARIIT.com.
MLA
Malsawmdawngliana, Dr. K. Kalimuthu, Dr. Sabitha Gauni. "Underwater optical wireless communication analysis using blue laser diode." International Journal of Advance Research, Ideas and Innovations in Technology 4.3 (2018). www.IJARIIT.com.
Malsawmdawngliana, Dr. K. Kalimuthu, Dr. Sabitha Gauni. Underwater optical wireless communication analysis using blue laser diode, International Journal of Advance Research, Ideas and Innovations in Technology, www.IJARIIT.com.
APA
Malsawmdawngliana, Dr. K. Kalimuthu, Dr. Sabitha Gauni (2018). Underwater optical wireless communication analysis using blue laser diode. International Journal of Advance Research, Ideas and Innovations in Technology, 4(3) www.IJARIIT.com.
MLA
Malsawmdawngliana, Dr. K. Kalimuthu, Dr. Sabitha Gauni. "Underwater optical wireless communication analysis using blue laser diode." International Journal of Advance Research, Ideas and Innovations in Technology 4.3 (2018). www.IJARIIT.com.
Abstract
In the proposed system, a 450nm blue laser diode is directly modulated by 16 Quadrature Amplitude Modulation (QAM) data which are orthogonal. The simulation is done by assuming underwater with ambient noise present in the underwater covering a distance of 20 meters. Due to the presence of noise and attenuation of the wireless medium, the optical power is decreased to a great extent. The photodetector converts the weak optical signal to electrical signal. The phase and amplitude of the signal is change caused by noise present in it. A Butterworth filter is implemented to obtain the original signal at the receiver side. It is shown that the output binary data has change due phase due to the corruption of the noise.
