Title :
Four-user ∼3-GHz-spaced subcarrier multiplexing (SCM) using optical direct-detection via hyperfine WDM
Author :
Xiao, Shijun ; Weiner, Andrew M.
Author_Institution :
Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA
Abstract :
We demonstrate an error-free four-user ∼3-GHz-spaced subcarrier multiplexing (SCM) experiment, where, for the first time to our knowledge, we use optical direct-detection via optical hyperfine wavelength-division multiplexing instead of heterodyne beating detection that is conventional for SCM. A hyperfine optical blocking filter allows optical single-sideband modulation with strong carrier suppression ∼ 20 dB below the unsuppressed single sideband and strong sideband suppression ∼20 dB.
Keywords :
channel spacing; multiuser channels; optical fibre communication; optical filters; optical modulation; subcarrier multiplexing; wavelength division multiplexing; carrier suppression; heterodyne beating detection; hyperfine optical blocking filter; optical direct-detection; optical hyperfine wavelength-division multiplexing; optical single-sideband modulation; sideband suppression; spaced subcarrier multiplexing; High speed optical techniques; Optical fiber polarization; Optical filters; Optical mixing; Optical modulation; Optical receivers; Optical sensors; Optical signal processing; Optical transmitters; Wavelength division multiplexing; Analog fiber links; hyperfine wavelength-division multiplexing (HWDM); subcarrier multiplexing (SCM); ultradense wavelength-division multiplexing;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2005.854398
