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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 26 — Dec. 12, 2011
  • pp: B574–B580

Novel RZ-CW conversion scheme for ultra multi-level, high-speed coherent OTDM transmission

Masataka Nakazawa, Keisuke Kasai, Masato Yoshida, and Toshihiko Hirooka  »View Author Affiliations

Optics Express, Vol. 19, Issue 26, pp. B574-B580 (2011)

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A novel coherent multi-level OTDM transmission scheme is presented by using an RZ-CW conversion technique in a coherent receiver, in which the transmitted coherent RZ pulses are OTDM demultiplexed and converted into a CW signals for demodulation with a CW-LO. This scheme enables us to achieve a high SNR demodulation and demultiplexing performance even for ultrahigh-speed OTDM signals with ultra multi-level modulation, which would be difficult to realize with a conventional scheme of simultaneous demodulation and demultiplexing using a pulsed-LO. The advantage of this scheme is successfully demonstrated with 10 Gsymbol/s, 4- and 8-OTDM, 32-RZ/QAM demodulation experiments.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4080) Fiber optics and optical communications : Modulation
(060.4230) Fiber optics and optical communications : Multiplexing

ToC Category:
Transmission Systems and Network Elements

Original Manuscript: October 3, 2011
Revised Manuscript: November 9, 2011
Manuscript Accepted: November 17, 2011
Published: November 30, 2011

Virtual Issues
European Conference on Optical Communication 2011 (2011) Optics Express

Masataka Nakazawa, Keisuke Kasai, Masato Yoshida, and Toshihiko Hirooka, "Novel RZ-CW conversion scheme for ultra multi-level, high-speed coherent OTDM transmission," Opt. Express 19, B574-B580 (2011)

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