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Sarangal, Himali
- Simulative Investigation of Dispersion Compensation in Optical Communication System Using DCF
Authors
1 Department of ECE, Guru Nanak Dev University, RC Jalandhar, Punjab, IN
Source
Programmable Device Circuits and Systems, Vol 8, No 3 (2016), Pagination: 57-60Abstract
Optical Fiber offers very high bandwidth and gives excessive data transmission speed.In optical fiber communication system dispersion, losses, attenuation and non linear effects are the issues that degrade its performance. In this paper, dispersion compensating fibers (DCF) are used to compensate the positive dispersion of transmission fiber .The system has been stimulated and analyzed using pre , post and symmetrical dispersion compensation methods for 10Gbps and 300 km length of optical fiber with 60 km of DCF. All three methods are compared in terms of different parameters such as Q-factor, BER, Eye height and Threshold value by using OptiSystem 7.0 simulator .It has been observed that the set-up require proper matching between EDFA gain and length of fiber for best performance.
Keywords
Dispersion Compensating Fiber (DCF), Erbium Doped Fiber Amplifier (EDFA), BER, Q-Factor.
- Simulation and Analysis of Optical Communication System Using Different Channels
Authors
1 Guru Nanak Dev University, Punjab, IN
Source
Programmable Device Circuits and Systems, Vol 8, No 5 (2016), Pagination: 108-111Abstract
Optical wireless has received major attention in the communication world due to growing demand for wireless broadband communication and overcrowding on bandwidth of RF spectrum. The performance analysis of an optical communication system with Single Mode Fiber (SMF), Free Space Optics (FSO), and Optical Wireless Communication (OWC) in different ranges where all the channels are operated at the same optical transmitted power with non-return-to-zero (NRZ) modulation has been analysed. The major problem in optical communication system is Strong atmospheric turbulence (disturbance due to rain, fog, haze etc.). Performance study is done for variable ranges 5, 7 and 10 km for the different channels at low bit rate 2.5Gb/s per channel. Comparison is made in terms of Q factor, BER and received optical power. It is concluded that the signal transmitted with has OWC system better Q factor, least BER and high received power as compared to SMF and OFC. .
Keywords
FSO, OWC, SMF, Quality Factor, Bit Error Rate.- Simulative Analysis of Free Space Optical Transmission System under Different Environmental Conditions
Authors
1 Sai Technology Campus, Amritsar, Punjab, IN
2 Beant College of Engineering & Technology, Gurdaspur, Punjab, IN
3 Guru Nanak Dev University, Regional Campus, Gurdaspur, Punjab, IN
Source
Programmable Device Circuits and Systems, Vol 1, No 6 (2009), Pagination: 149-154Abstract
Free space optics is an excellent supplement to fiber optics, capable of handling point to point and point to multipoint connections. It is the broadband wireless solution for connecting the backbone to the users (Last-Mile-Access). FSO links are highly affected by the local atmospheric conditions. In this paper we simulate the FSO system for different vironmental conditions operating at a bit rate of 2.5, 10 and 20 Gb/s for RZ format with 0.8 duty cycle. The results shows that heavy rain cause very high bit error rate, and they limit maximun link length to 1.1 km for bit rate 2.5Gb/s and link length decreases as the bit rate increases. During heavy haze and moderate rain the link length is upto 2.5 km and 1.8 km, respectively.