Browsing by Author "Amann, M. C."

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40-Gb/s Upstream Transmitters Using Directly Modulated 1.55-mu m VCSEL Array for High-Split-Ratio PONs
(2010-03-01)
Chow, C. W.
;
Xu, L.
;
Yeh, C. H.
;
Tsang, H. K.
;
Hofmann, W.
We propose and demonstrate a 40-Gb/s symmetric passive optical network with a high split-ratio of 64. The upstream 4 x 10 Gb/s signal is produced by using a directly modulated, uncooled 1.55 mu m monolithic integrated vertical-cavity surface-emitting laser array. The downstream signal is a single-channel 40-Gb/s dark-return-to-zero (DRZ) data, broadcasting information to different optical networking units (ONUs). As the ONU is cost-sensitive, we also demonstrate, by means of simulations, using a 12-Gb/s receiver at the ONU to receive the 40-Gb/s DRZ downstream signal.