Free Space Optic communication using Optical AM, OOK-NRZ and OOK-RZ Modulation Techniques

Abstract

Free space optic (FSO) communication is recent work over optical fiber communication. In this paper, optical analog link communication using Amplitude modulation (AM) and optical digital link using On-Off Keying-Return to Zero (OOK-RZ) and On-Off Keying-Non Return to Zero (OOK-NRZ) modulation for FSO has been carried out using OptiSystem 16 software. A Continuous wave (CW) Laser is used as an optical source and modulated using selective modulation techniques. The transmitted and received signal is gradually analyzed by increasing the distance of the FSO channel, to get the proper distance measurement up to which the transmitted signal can be received without any error for the FSO system.