Title :
Performance analysis of self-synchronized optically preamplified PPM
Author :
Elmirghani, Jaafar M H ; Cryan, Robert A.
Author_Institution :
Dept. of Electr. & Electron. Eng., Newcastle upon Tyne Univ., UK
fDate :
5/1/1995 12:00:00 AM
Abstract :
The performance of a hybrid erbium-doped fiber amplifier pulse position modulation (EDFA PPM) system is investigated under self-synchronization. Sensitivity results are presented for a system operating at 622 Mb/s and λ=1.53 μm. These indicate that EDFA PPM offers 7.9 dB sensitivity improvement over an equivalent EDFA PCM system and is beyond the fundamental PCM limit. An original expression is derived for the EDFA PPM power spectral density (PSD) under jitter. Original results are presented for the timing variance and the jitter wrong slot error (JWSE) probability due to the extracted self-timing. An original analysis and results are given for the system sensitivity penalty due to jitter. The penalty varied between 0.15 and 1.9 dB for the range of parameters considered. The selection of the system parameters that minimizes the penalty is investigated
Keywords :
erbium; fibre lasers; jitter; optical fibre communication; optical modulation; probability; pulse position modulation; sensitivity; synchronisation; 1.53 mum; 622 Mbit/s; extracted self-timing; hybrid erbium-doped fiber amplifier; jitter wrong slot error probability; performance analysis; power spectral density; pulse position modulation; self-synchronization; self-synchronized optically preamplified PPM; sensitivity improvement; sensitivity results; system parameters; system sensitivity penalty; timing variance; Erbium-doped fiber amplifier; Jitter; Optical modulation; Optical pulses; Optical sensors; Performance analysis; Phase change materials; Pulse amplifiers; Pulse modulation; Stimulated emission;
Journal_Title :
Lightwave Technology, Journal of
