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Optica Publishing Group
  • Chinese Optics Letters
  • Vol. 3,
  • Issue S1,
  • pp. S251-S252
  • (2005)

Study of optical gain from square-nested PCFs with impurities

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Abstract

Using numerical simulation method based on finite-difference time-domain (FDTD), we study the characteristics of the multiple-core photonic crystal fibers (PCFs) in which square-nested compound lattices (SNCLs) with several defect regions are introduced. We find that each line defect in the PCFs can serve as a channel in wavelength division multiplexing (WDM) communication systems. The crosstalk can be suppressed because there is a band gap among each channel in the PCFs. And PCF amplifiers are expected to be used in the super-dense WDM systems.

© 2005 Chinese Optics Letters

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