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Error-free and low penalty ( < 2.5 dB) 1 times 4 multiwavelength conversion at 40 Gbit/s in a 1550 nm quantum dot semiconductor optical amplifier (QD-SOA) is demonstrated. The suggested converter makes use of a simplified filtering scheme based on a standard telecom grade dense wavelength division multiplexing demultiplexer (Demux). By detuning the wavelength of the continuous-wave probes out of...
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