Title :
System level designing of FSO link through LED and NRZ modulation scheme by using different filters
Author :
Ahmed, Naveed ; Anis, M. Irfan ; Farhan
Author_Institution :
Dept. of Electron. Eng., Sir Syed Univ. of Eng. & Technol., Karachi, Pakistan
Abstract :
Free space optics (FSO) communication provides an attractive solution to bridge the gap between the existing fiber optics infrastructure and the end user. This paper investigates the system level design link of FSO by using different filters for the reduction of noise and timing error. The use of FSO links has been proposed as a solution to the connectivity bottleneck problem which has arisen from the ever increasing demand for high bandwidth in different network topology. Transmitter consist of NRZ modulating LED with a wavelength of 1550 nm and using positive intrinsic negative type photodiode as a receiver, the link range is 450 meters. The result shows the response of timing error, zero crossing distortion and SNR by using different filters.
Keywords :
optical fibre filters; optical links; optical modulation; FSO communication; FSO link; NRZ modulating LED; NRZ modulation scheme; fiber optics infrastructure; filters; free space optics communication; network topology; noise reduction; non-return-to-zero technique; timing error; Light emitting diodes; Optical distortion; Optical fiber filters; Optical filters; Optical modulation; Optical noise; Optical receivers; Optical signal processing; Optical transmitters; Timing; FSO; LED; NRZ; SNR; TIMING ERROR;
Conference_Titel :
Microwave Symposium (MMS), 2009 Mediterrannean
Conference_Location :
Tangiers
Print_ISBN :
978-1-4244-4664-3
Electronic_ISBN :
978-1-4244-4665-0
DOI :
10.1109/MMS.2009.5409793
