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Subcarrier multiplexing for high-speed optical transmission
Hui, Rongqing Zhu, Benyuan Huang, Renxiang Allen, Christopher Thomas Demarest, Kenneth R. Richards, Douglas L.
Hui, Rongqing
Zhu, Benyuan
Huang, Renxiang
Allen, Christopher Thomas
Demarest, Kenneth R.
Richards, Douglas L.
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Abstract
The performance of high-speed digital fiber-optic transmission using subcarrier multiplexing (SCM) is investigated both analytically and numerically. In order to reduce the impact of fiber chromatic dispersion and increase bandwidth efficiency, optical single-sideband (OSSB) modulation was used. Because frequency spacing between adjacent subcarriers can be much narrower than in a conventional DWDM system, nonlinear crosstalk must be considered. Although chromatic dispersion is not a limiting factor in SCM systems because the data rate at each subcarrier is low, polarization mode dispersion (PMD) has a big impact on the system performance if radiofrequency (RF) phase detection is used in the receiver. In order to optimize the system performance, tradeoffs must be made between data rate per subcarrier, levels of modulation, channel spacing between subcarriers, optical power, and modulation indexes. A 10-Gb/s SCM test bed has been set up in which 4 x 2.5 Gb/s data streams are combined into one wavelength that occupies a 20-GHz optical bandwidth. OSSB modulation is used in the experiment. The measured results agree well with the analytical prediction.
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©2002 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Date
2002-03
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IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
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00988990.pdf
Adobe PDF, 377.04 KB
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Keywords
Optical fiber communication, Optical fiber polarization, Optical modulation, Optical receiver, Optical signal processing, Subcarrier multiplexing
Citation
Hui, RQ; Zhu, BY; Huang, RX; Allen, CT; Demarest, KR; Richards, D. Subcarrier multiplexing for high-speed optical transmission. JOURNAL OF LIGHTWAVE TECHNOLOGY. March 2002. 20(3) : 417-427