Investigation of The Electrical Gain of Inter-Satellite Wireless Optical Communication System under The Electron Radiation
Free space optical communication is providing a unique method for the satellites orbiting around the earth to communication with each other. Inter- satellite optical wireless communication systems (Is OWC), is becoming one of the most important applications of Free space optical communication technology, as such systems are providing a high bandwidth, small size, light weight, low power and low cost alternative to present microwave satellite systems. In this paper, inter-satellite wireless optical communication link (Is WOC) is modelled using Opti system and then investigation is carried out to study the effect of electron radiation on the electrical amplifier gain implemented in the optical receiver of the (Is WOC) link. The proposed system is a non-diffused link or line-of-sight setup, which uses On-off keying (OOK) modulation technique with wavelength 1550 nm between two satellites estranged by a distance of 5000 km as such from Low Earth Orbit (LEO) to Medium Earth Orbit (MEO), with input power of 30 dBm at data rate of 1 Gbps. The performance of the system is analyzed in terms of Quality –factor (Q- Factor), bit-error rate (BER), and eye opening. Finally, the electron radiation effect on the electrical gain is compared at different doses in terms of the BER and Q – Factor. Keywords - BER, Electron Radiation, Optical Communication, OOK Modulation, Q- Factor.