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1746 1752 29 12 ; S ; This paper was published in JOURNAL OF LIGHTWAVE TECHNOLOGY and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1109/JLT.2011.2135839. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law. [EN] Different optical filtering scenarios involving microwave photonic phase shifters based on semiconductor optical amplifiers are investigated numerically as well as experimentally with respect to noise performance. Investigations on the role of the modulation depth and number of elements in cascaded shifting stages are also carried out. Suppression of the noise level by more than 5 dB has been achieved in schemes based on band-pass optical filtering when three phase shifting stages are cascaded. This work was supported in part by the EU FP7 within project GOSPEL, the Excellency Award Programme GVA PROMETEO 2008/092 and the Plan Nacional I+D TEC 2007-68065-C03-01. Lloret Soler, JA.; Ramos Pascual, F.; Xue, W.; Sancho Durá, J.; Gasulla Mestre, I.; Sales Maicas, S.; Mork, J. (2011). The Influence of Optical Filtering on the Noise Performance of Microwave Photonic Phase Shifters Based on SOAs. Journal of Lightwave Technology. 29(12):1746-1752. https://doi.org/10.1109/JLT.2011.2135839