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2001
Journal Article
Titel
Optimization of SOA-based Sagnac-interferometer switches for demultiplexing to 10 and 40 Gb/s
Abstract
We investigate the performance of a semiconductor optical amplifier (SOA) based Sagnac-interferometer switch in its application as time division demultiplexer. By performing dynamic switching window measurements with a time resolution of about 1 ps, the temporal width and the contrast of the switching windows are investigated for SOA lengths of 500, 1000 and 1500 mu m. Operating the switch with a control pulse rate of 10 GHz (corresponding to all-optical demultiplexing to 10 Gb/s) the shortest switching windows, still retaining high contrast, are achieved with short SOAs. By increasing the control pulse rate to 40 GHz, the case of an SOA-based all-optical demultiplexer with a base rate of 40 Gb/s is investigated. Though the switching contrast deteriorates for the 40 GHz control pulse rate, the obtainable contrast is still up to 19 dB. This finding encourages the feasibility of SOA-based interferometric demultiplexers with base rates of 40 Gb/s. In particular, this feature is crucial to future all-optical demultiplexers as the base rate of electronic signal processing is currently evolving to 40 Gb/s.
Tags
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demultiplexing
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demultiplexing equipment
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light interferometers
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optical switches
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optimisation
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semiconductor optical amplifiers
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time division multiplexing
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soa-based sagnac-interferometer switches
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sagnac-interferometer switches
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performance
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semiconductor optical amplifier
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sagnac-interferometer switch
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time division demultiplexer
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dynamic switching window measurements
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time resolution
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temporal width
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contrast
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switching windows
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switch operation
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control pulse rate
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all-optical demultiplexing
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base rate
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switching contrast
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soa-based interferometric demultiplexers
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base rates
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all-optical demultiplexers
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electronic signal processing
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10 GHz
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1 ps
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500 mum
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100 mum
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1500 mum
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10 Gbit/s
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40 Gbit/s
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40 GHz