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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 14 — Jul. 7, 2008
  • pp: 10039–10052

Control and Stabilization of bit-wise phase correlation in 160 (4×40) Gbit/s OTDM signal and its impact on transmission

Masatoshi Kagawa, Hitoshi Murai, Hiromi Tsuji, Kensuke Sasaki, and Kozo Fujii  »View Author Affiliations


Optics Express, Vol. 16, Issue 14, pp. 10039-10052 (2008)
http://dx.doi.org/10.1364/OE.16.010039


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Abstract

Detail of control technique of bit-wise phase correlation in 160 (4×40) Gbit/s optical time division multiplexing (OTDM) signal using a phase-correlation monitor based on 1-bit delay asymmetric interferometers (AIFs) is described. The 1-bit delay AIF transforms a bit-by-bit optical phase discontinuity to an optical power variation, so that it enables to quantify the phase-jump between adjacent bits. By use of this unique technique, we experimentally demonstrated stable generation of bitwisely phase-controlled 160 Gbit/s periodical alternate-phase return-to-Zero (APRZ) signal in addition to other different modulation formats such as conventional RZ, carrier suppressed RZ (CS-RZ), pair-wise alternate-phase CSRZ (PAP-CSRZ) and π/2-APRZ. And long term stability was observed with CS-RZ signal. Also, we show some experimental results of 120 km unrepeatered transmission using standard single mode fiber (SSMF) and then discuss the impact of bit-wise phase change on 160 Gbit/s OTDM transmission performance.

© 2008 Optical Society of America

OCIS Codes
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 27, 2007
Revised Manuscript: May 28, 2008
Manuscript Accepted: June 16, 2008
Published: June 23, 2008

Citation
Masatoshi Kagawa, Hitoshi Murai, Hiromi Tsuji, Kensuke Sasaki, and Kozo Fujii, "Control and Stabilization of bit-wise phase correlation in 160 (4 x 40) Gbit/s OTDM signal and its impact on transmission," Opt. Express 16, 10039-10052 (2008)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-16-14-10039


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