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Optical Engineering

Subcarrier to subcarrier intermixing interference cancellation in vestigial-sideband orthogonal frequency division multiplexing system
Author(s): Cheng Ju; Xue Chen; Na Liu; Liqian Wang
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Paper Abstract

The presence of vestigial-sideband optical filter, dispersion and chirp of modulator increases subcarrier to subcarrier intermixing interference (SSII), which significantly restricts transmission performance. For the first time, the iterative interference cancellation method is introduced to calculate and eliminate SSII. Furthermore, we successfully demonstrate a 40-Gbps, 16-QAM, dual drive Mach-Zehnder modulator (MZM)-based system transmission through 100-km uncompensated standard single-mode fiber. The impact of chirp on iterative algorithm is also experimentally evaluated by setting different optical phase modulation amplitudes on the two arms of the dual drive MZM.

Paper Details

Date Published: 15 September 2014
PDF: 6 pages
Opt. Eng. 53(9) 096108 doi: 10.1117/1.OE.53.9.096108
Published in: Optical Engineering Volume 53, Issue 9
Show Author Affiliations
Cheng Ju, Beijing Univ. of Posts and Telecommunications (China)
Xue Chen, Beijing Univ. of Posts and Telecommunications (China)
Na Liu, Beijing Univ. of Posts and Telecommunications (China)
Liqian Wang, Beijing Univ. of Posts and Telecommunications (China)

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