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An improved gaussian approximation for optically preamplified PPM systems including the effect of timing jitter
Author(s) -
Phillips A. J.,
Cryan R. A.,
Senior J. M.
Publication year - 1995
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.4650100111
Subject(s) - jitter , gaussian , sensitivity (control systems) , photon , electronic engineering , limit (mathematics) , physics , computer science , optics , telecommunications , mathematics , engineering , quantum mechanics , mathematical analysis
The effect of timing jitter is evaluated using an improved Gaussian approximation for an optically preamplified PPM receiver. For the parameters considered a potential sensitivity of 23.6 photons/bit is demonstrated in the unjittered case with the jittered optimum at worst only 1 dB less sensitive. Both these results surpass the fundamental sensitivity limit of an OOK NRZ system. The analysis predicts that wrong‐slot and jitter errors first become dominant at a coding level higher than that suggested by an earlier model. © 1995 John Wiley & Sons, Inc.