Title :
Performance analysis of optical heterodyne FSK systems with nonuniform laser FM response
Author :
Majumder, S.P. ; Gangopadhyay, R. ; Alam, M.S. ; Prati, G.
Author_Institution :
Dept. of Electr. & Electron. Eng., Bangladesh Univ. of Eng. & Technol., Dhaka, Bangladesh
Abstract :
A simple analytical model for evaluating the system performance due to the combined effects of receiver noise, laser phase noise, and laser non-uniform FM response in wide-deviation heterodyne optical FSK system with envelope detection is presented. With this approach, the relative effectiveness of several linecoding schemes, such as alternate mark inversion (AMI), Manchester coding (MC), and delay modulation (DM), in counteracting the pattern dependent performance degradation due to non-flat FM response has been quantitatively assessed. Theoretical and simulation results show that the performance of linecoded systems are within 0.7 dB at bit error probability of 10-9 from the random non-return to zero (NRZ) FSK system with flat FM response
Keywords :
demodulation; digital simulation; encoding; frequency shift keying; optical receivers; performance evaluation; signal detection; Manchester coding; alternate mark inversion; analytical model; bit error probability; computer simulation; delay modulation; envelope detection; heterodyne FSK systems; laser phase noise; linecoded systems; linecoding schemes; nonflat FM response; nonuniform laser FM response; pattern dependent performance degradation; performance analysis; receiver noise; relative effectiveness; Analytical models; Frequency shift keying; Laser modes; Laser noise; Optical mixing; Optical noise; Optical receivers; Performance analysis; Phase noise; System performance;
Conference_Titel :
Aerospace and Electronics Conference, 1994. NAECON 1994., Proceedings of the IEEE 1994 National
Conference_Location :
Dayton, OH
Print_ISBN :
0-7803-1893-5
DOI :
10.1109/NAECON.1994.332923
