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キーワード:
TRANSMISSION; SYSTEMS; DPSKEngineering; Optics; 2R regeneration; quadrature amplitude modulation; NALM; NOLM;
要旨:
The influence of amplifier gain saturation in nonlinear amplifying loop mirror on simultaneous phase-preserving regeneration of two power states has been studied. Numerical simulations have shown an improvement of up to 4 dB for the first, low-power state and 8 dB for the second high-power state. Compared to the linear amplifier case an improvement of 3 dB for the second power state has been achieved.