A novel demultiplexer circuit using flip-chip bonded Si Schottky diodes sampling circuit is demonstrated for optical communication receiver. A sampler-based demultiplexer circuit theory is presented and simulated for an optically preamplified direct detection system. For its experimental demonstration, very high-speed Si Schottky diodes are modelled applying the Root-diode model. The flip-chip bonding connections are simulated with the 3-dimensional electro-magnetic simulator and an equivalent circuit model is established and plugged into the circuit simulator. With the extracted diode model and the developed flip-chip bonding equivalent circuit, the diode sampling circuit is designed and simulated using a nonlinear circuit simulator. For the purpose of reducing deterministic intersymbol interferences, an equalizer circuit with the zero-forcing algorithm is designed and simulated. The measurement results display the demultiplexed signal output, as expected in the simulation. Using the matured Si technology, the high-speed demultiplexer circuit can be constructed in an analogue way using 2 terminal devices, namely Si Schottky diodes. This method is expected to reduce the bottleneck in the electronic part of optical communication links.
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A novel demultiplexer circuit using flip-chip bonded Si Schottky diodes sampling circuit is demonstrated for optical communication receiver. A sampler-based demultiplexer circuit theory is presented and simulated for an optically preamplified direct detection system. For its experimental demonstration, very high-speed Si Schottky diodes are modelled applying the Root-diode model. The flip-chip bonding connections are simulated with the 3-dimensional electro-magnetic simulator and an equivalent c...
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