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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 13 — Jun. 22, 2009
  • pp: 11140–11154

Monitoring technique for waveform distortion of 160 Gb/s signal by prescaled-clock tone detection using EA modulator

Masatoshi KAGAWA, Hiromi TSUJI, Akihiro FUJII, Yoshihiro KANDA, and Hitoshi MURAI  »View Author Affiliations


Optics Express, Vol. 17, Issue 13, pp. 11140-11154 (2009)
http://dx.doi.org/10.1364/OE.17.011140


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Abstract

In order to monitor quality of ultra high bit-rate optical signals in a future optical network, such as 160 Gb/s, a simple monitoring technique is required. Therefore, a novel waveform monitoring technique by prescaled-clock tone detection was proposed in a previous report. In this paper, detailed principle of the proposed technique was explained. The monitoring technique is based on an asynchronous beat signal generation using an elecro-absorption modulator (EAM) and is able to separately observe waveform distortion caused by accumulated chromatic dispersion (CD), polarization mode dispersion (PMD) and optical signal-to-noise ratio (OSNR) degradation. The verification of concepts was performed by experiments, in which 1 GHz pre-scaled signals were employed to monitor distortion of OTDM 160 Gb/s carrier suppressed return-to-zero (CS-RZ) signals. Furthermore, applicability to Q factor estimation was verified by an experiment. In addition, an observation of 160 Gb/s signal by the proposed monitor was demonstrated over 120 minutes using an installed fiber in JGN-II testbed.

© 2009 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: February 23, 2009
Revised Manuscript: May 12, 2009
Manuscript Accepted: June 10, 2009
Published: June 19, 2009

Citation
Masatoshi Kagawa, Hiromi Tsuji, Akihiro Fujii, Yoshihiro Kanda, and Hitoshi Murai, "Monitoring technique for waveform distortion of 160 Gb/s signal by prescaled-clock tone detection using EA modulator," Opt. Express 17, 11140-11154 (2009)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-13-11140


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