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Optical‐fiber digital PPM systems employing PIN‐FET receivers
Author(s) -
Cryan R. A.
Publication year - 1993
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.4650061605
Subject(s) - sensitivity (control systems) , pulse position modulation , electronic engineering , optical fiber , reduction (mathematics) , modulation (music) , megabit , materials science , electrical engineering , pulse (music) , optics , engineering , physics , pulse amplitude modulation , mathematics , acoustics , detector , geometry
An analysis is presented for the optimum detection of digital pulse position modulation employing PIN‐FET receivers. The results demonstrate a sensitivity improvement of 7.2 dB over an equivalent PCM system when operating at a bit rate of 50 Mbits/s. Calculations have also been performed for a causal approximation to the optimum receiver and it is shown that this leads to only a 0.5‐dB reduction in sensitivity. Finally, receiver design implications are examined for higher bit‐rate operation and the results obtained for a 565‐Mbit/s system demonstrate an improvement of 6 dB over PCM.