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Proceedings Paper

Optical signal regeneration at different modulation formats
Author(s): Bernhard Schmauss; Arne G. Striegler; Markus Meissner
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Paper Abstract

Optical transmission systems made impressive progress in the field of system capacity, reach and flexibility. Beside all improvements achieved so far, signal distortion on the one hand side and noise accumulation on the other hand side are the limitations of optical transmission systems. In terms of signal distortion besides advanced link design strategies optical regenerators are of high interest for signal conditioning along a fiber link. Furthermore the upcoming techniques of advanced modulation formats build a basis for further improvement of transmission quality that ends up with even higher reach, higher robustness against transmission impairments, lower signal to noise requirements etc. In this talk the current status of research in the field of optical signal regenerators suitable for signal regeneration for different modulation formats will be reviewed and presented, where we restrict our analysis to 2R regenerators. The focus will be put on regenerators taking advantage of non linear optical effects in order to improve signal quality. The main challenge is the treatment of phase modulated signals within regenerators. Especially the differential phase shift keying (DPSK) modulation format or the duobinary modulation format are attractive candidates for such kind of regenerators for further improvement of DPSK based transmission systems. The paper will go through several regenerative concepts like non linear optical loop mirror (NOLM) based and cross phase modulation based regenerators in order to figure out their potential for advanced modulation format based systems.

Paper Details

Date Published: 25 October 2004
PDF: 13 pages
Proc. SPIE 5596, Optical Transmission Systems and Equipment for WDM Networking III, (25 October 2004); doi: 10.1117/12.580086
Show Author Affiliations
Bernhard Schmauss, Univ. of Applied Sciences Regensburg (Germany)
Arne G. Striegler, Univ. Erlangen-Nurnberg (Germany)
Markus Meissner, Univ. Erlangen-Nurnberg (Germany)


Published in SPIE Proceedings Vol. 5596:
Optical Transmission Systems and Equipment for WDM Networking III
Benjamin B. Dingel; Werner Weiershausen; Achyut K. Dutta; Ken-Ichi Sato, Editor(s)

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