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We propose and experimentally demonstrate a novel scheme to generate optical frequency-locked multicarriers, by using recirculating frequency shifter loop based on multifrequency shifting single-sideband (MFS-SSB) modulation with improved tone to noise ratio (TNR) performance. By using MFS-SSB modulation, we can generate subcarriers during each round trip without interference, and the recirculation...
We investigate to generate coherent and frequency-lock optical multi-carriers by using cascaded phase modulators and recirculating frequency shifter (RFS) based on an EDFA loop. 113 coherent and frequency-lock subcarriers with tone-to-noise ratio larger than 26dB are generated. The amplitude difference of subcarriers obtained after a tilt filter covering about 22.6nm is less than 5dB.
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