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Carrier-Reuse WDM-PON Using a Shared Delay Interferometer for Separating Carriers and Subcarriers

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7 Author(s)
Zhaowen Xu ; Inst. for Infocomm Res., Singapore ; Yang Jing Wen ; Wen-De Zhong ; Manik Attygalle
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We propose a novel optical carrier-reuse scheme for the wavelength-division-multiplexed passive optical network. The scheme is based on a single delay interferometer (DI) at the remote node and reflective semiconductor optical amplifiers (RSOAs) at optical network units as the colorless devices for upstream transmission. The downstream subcarrier signals are optically separated by the DI for baseband detection of the downstream data and the separated optical carriers are used for seeding the RSOAs. Eight-channel upstream and downstream transmission is demonstrated at 1.25 Gb/s using the proposed scheme. The impact of optical carrier-to-subcarrier ratio of downlink signal and seeding light power on performance is also investigated

Published in:

IEEE Photonics Technology Letters  (Volume:19 ,  Issue: 11 )