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22 January 2010 Phase-preserving amplitude noise suppression using an attenuation-imbalanced NOLM
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Abstract
A nonlinear optical loop mirror with a bidirectional attenuator has been used for regeneration of return-to-zero differential phase-shift-keyed (RZ-DPSK) signals. A 2.5 ps, 10 Gb/s signal with amplitude fluctuations of 28 % was regenerated with a negative power penalty of 2 dB practically back to the quality of the undistorted reference signal. Parameters limiting system performance and optimization possibilities will be discussed.
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E. Parsons, C. Stephan, K. Sponsel, T. Roethlingshoefer, F. Küppers, G. Onishchukov, B. Schmauss, and G. Leuchs "Phase-preserving amplitude noise suppression using an attenuation-imbalanced NOLM", Proc. SPIE 7621, Optical Metro Networks and Short-Haul Systems II, 762109 (22 January 2010); https://doi.org/10.1117/12.843721
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