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Proceedings Paper

Optical sampling using a PPLN waveguide for optical performance monitoring
Author(s): Mao-tong Liu; Ai-ying Yang; Yu-nan Sun
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Paper Abstract

Many experiments of optical sampling based on the second-order optical nonlinear interactions in periodically poled LiNbO3 (PPLN) quasi-phase-matched (QPM) waveguides have already been demonstrated during the last few years. There are several processes in PPLN that may be used for sampling optical signals, including sum-frequency generation (SFG), difference-frequency generation (DFG), cascaded second harmonic generation and difference-frequency generation (cSHG/DFG), and cascaded sum-frequency generation and difference-frequency generation (cSFG/DFG). The comparisons are carried out, which are necessary for designing the optical sampling system that satisfies the requirements of optical performance monitoring (OPM) of the optical networks. The SFG and cSFG/DFG based conversions are much more suitable for constructing OPM systems. The SFG of either two pulsed waves or one pulsed wave and one continuous wave is the basic nonlinear process for sampling optical signals using PPLN waveguide. Theoretical analyses based on coupled-wave equations are carried out for the pulsed-SFG process.

Paper Details

Date Published: 4 January 2008
PDF: 9 pages
Proc. SPIE 6837, Information Optics and Photonics Technologies II, 68370H (4 January 2008); doi: 10.1117/12.757622
Show Author Affiliations
Mao-tong Liu, Beijing Institute of Technology (China)
Ai-ying Yang, Beijing Institute of Technology (China)
Yu-nan Sun, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 6837:
Information Optics and Photonics Technologies II
Guoguang Mu; Feijun Song; Francis T. S. Yu; Suganda Jutamulia, Editor(s)

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