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Proceedings Paper

Pre-distortion to mitigate SPM effect in optical BPSK-SSB fiber transmission
Author(s): Katsumi Takano; Yuki Sawaguchi; Yoshiaki Ichijo; Shun Sato; Kiyoshi Nakagawa
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Paper Abstract

Use of an optical single side-band (OSSB) modulation signal engenders high bandwidth efficiency because the OSSB signal occupies only half the channel bandwidth necessary for intensity modulation. Previous reports have been clarified that the binary phase shift keying OSSB (optical BPSK-SSB) signal has relative high sideband suppression ratio and tends to degrade the detected waveform as fiber input power increases. The waveform degradation is induced by self-phase modulation (SPM) in optical fiber. In order to equalize the waveform degradation, this paper proposes the novel pre-equalization scheme that makes additional phase modulation to optical BPSK-SSB signal. The depth of phase modulation is proportional to the optical power. The equalizing method was investigated in dispersion-compensated fiber transmissions with BPSK-SSB modulation. The results prove the equalization has the possibility of 15dB improvement of fiber input power compared to the no-equalization case.

Paper Details

Date Published: 18 February 2011
PDF: 6 pages
Proc. SPIE 7988, Optical Transmission Systems, Switching, and Subsystems VIII, 79881N (18 February 2011); doi: 10.1117/12.888657
Show Author Affiliations
Katsumi Takano, Yamagata Univ. (Japan)
Yuki Sawaguchi, Yamagata Univ. (Japan)
Yoshiaki Ichijo, Yamagata Univ. (Japan)
Shun Sato, Yamagata Univ. (Japan)
Kiyoshi Nakagawa, Yamagata Univ. (Japan)

Published in SPIE Proceedings Vol. 7988:
Optical Transmission Systems, Switching, and Subsystems VIII
Yikai Su; Ernesto Ciaramella; Xiang Liu; Naoya Wada, Editor(s)

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