Open AccessImproved multi-channel multi-carrier generation using gain-independent multi-channel frequency shifting recirculating loop
Author(s) -
Junwen Zhang,
Jianjun Yu,
Nan Chi,
Ze Dong,
Xinying Li,
Gee Kung Chang
Publication year - 2012
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.20.029599
Subject(s) - channel (broadcasting) , sideband , channel spacing , interference (communication) , modulation (music) , loop (graph theory) , orthogonal frequency division multiplexing , computer science , wavelength division multiplexing , optics , physics , electronic engineering , radio frequency , telecommunications , acoustics , engineering , wavelength , mathematics , combinatorics
We propose and experimentally demonstrate an improved scheme to generate optical frequency-locked multi-channel multi-carriers (MCMC), using a gain-independent multi-channel recirculating frequency shifter (MC-RFS) loop based on single sideband (SSB) modulation. We re-build the RFS structure with better performance. By using MC-RFS loop, we can generate N-channel subcarriers each round trip without interference. These subcarriers of each channel are stable and frequency-locked, which can be used for multi-channel WDM source. The dual-channel RFS loop is carried out for demonstration in our experiment with dual-carrier source. Using this scheme, we successfully generate 62 frequency-locked subcarriers with 25-GHz frequency spacing in 2 channels and each channel has 31 tones.