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Sensitivity penalty in optically preamplified ppm with slot timing jitter impairment
Author(s) -
Elmirghani Jaafar M. H.,
Cryan Robert A.
Publication year - 1994
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.4650071016
Subject(s) - jitter , sensitivity (control systems) , optical amplifier , bandwidth (computing) , phase locked loop , computer science , optics , electronic engineering , physics , engineering , telecommunications , laser
The impact of timing jitter on PPM utilizing an erbium‐doped fiber amplifier (EDFA) front end is considered. In the absence of jitter the sensitivity calculations indicate that EDFA PPM offers 7.9–dB sensitivity improvement over EDFA PCM at 622 Mbit/s and λ = 1.53 μm. An original analysis and results are presented for the impact of the extracted slot clock timing jitter on EDFA PPM sensitivity. The jitter sensitivity penalty is shown to vary between 0.15 and 1.9 dB for the range of parameters considered. The selection of the slot phase‐lock loop (PLL) bandwidth that minimizes the jitter penalty is investigated. © 1994 John Wiley & Sons, Inc.