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This paper presents a fast switching and gain control technique of optical repeater units (ORUs) for burst mode upstream transmission over a Super-PON system by using semiconductor optical amplifiers (SOAs). Measurement results confirm that switching of the SOA can be accomplished within 3 bits at 155.52 Mbps and that the gain control range is more than 10 dB. Downstream communication is in single talker and continuous mode, therefore no fast gain setting is needed. This allows us to use low noise figure (NF) Erbium Doped Fiber Amplifiers (EDFAs) with high O-8194-2294-O/96/$6.OO SPIE Vol. 2893 / 19 Downloaded From: http://proceedings.spiedigitallibrary.org/ on 06/24/2016 Terms of Use: http://spiedigitallibrary.org/ss/TermsOfUse.aspx

This paper contains experimental results obtained from the ACTS PLANET (Photonic Local Access NETwork) Lab demonstrator, which confirm the technical feasibility of the SuperPON concept. The SuperPON is an optical fibre-based A TM access network which can support a large number of subscriber Optical Network Units (ONUs) up to 2048 and cover a long distance of 100 km. This contribution shows detailed results of upstream experiments carried out on newly developed fast switching and gain controlled Optical Repeater Units (ORUs). Performance data on cascaded Semiconductor Optical Amplifiers (SOAs) include Bit Error Ratio (BER) measurements, and Signal Noise Ratio (SNR) degradation due to the introduction of cascaded SOAs. Experimental results confirm that a SuperPON can service 2048 ONUs over a distance of 100 km.

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