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30 October 2007 Offset sideboard modulation for FTTx
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Proceedings Volume 6796, Photonics North 2007; 679631 (2007) https://doi.org/10.1117/12.779101
Event: Photonics North 2007, 2007, Ottawa, Canada
Abstract
In this paper we demonstrate the ability of offset sideband modulation (OSBM) to alleviate problems pertaining to the electrical crosstalk between upstream and downstream signals in a transceiver used in the optical network unit of a FTTx system. The OSBM signal consists of an optical carrier and an offset modulated sideband that are created using arbitrary optical waveform generation. The performance of OSBM is investigated in the context of an inline transceiver, which is a very simple, next generation, FTTx transceiver. The downstream OSBM bit rate was 2.5 Gbit/s and the upstream OOK bit rate was 1.25 Gbit/s. A power penalty of only 0.2 dB with respect to an interference free system was observed with an optical signal to interference ratio (OSIR) as small as -8 dB (the interfering signal power is 8 dB larger than the signal power). This was the minimum OSIR available with the experimental setup, and it is expected that lower OSIRs can be tolerated.
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Jamie D. Gaudette, David J. Krause, John C. Cartledge, and Kim Roberts "Offset sideboard modulation for FTTx", Proc. SPIE 6796, Photonics North 2007, 679631 (30 October 2007); https://doi.org/10.1117/12.779101
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