Investigation of the power coupling of novel wavelength-selective couplers incorporating axially symmetric long-period fibre gratings

  • Ronnie Kritzinger Department of Electrical and Electronic Engineering Science, University of Johannesburg
  • Johan Meyer Department of Electrical and Electronic Engineering Science, University of Johannesburg
  • Johan Burger National Metrology Institute of South Africa
Keywords: evanescent-field coupling, wavelength-selective coupler, long-period fibre grating, coupling efficiency, multiplexer, fibre optics


Evanescent-field coupling was studied experimentally in novel optical-fibre-based wavelength-selective couplers, using axially symmetric long-period fibre grating (LPFG) structures. The coupling characteristics of a wavelength-selective coupler at the resonant wavelength were investigated for different LPFG offset distances. It was shown that the wavelength-selective couplers effectively transferred light power at the LPFG resonant wavelength from one fibre to another. The performance of the couplers was consistent with simulations performed in MATLAB using coupled-mode theory.

Author Biographies

Ronnie Kritzinger, Department of Electrical and Electronic Engineering Science, University of Johannesburg
Ronnie Kritzinger received the B.Eng degree in electrical engineering and B.Sc degree in information technology from the Rand Afrikaans University, Johannesburg, in 2002. In 2005 he obtained the M.Eng degree in electrical engineering from the University of Johannesburg. He obtained the D.Eng degree at UJ in 2010, where his primary research interest was optical communications for implementation in the telecommunications industry. He is currently working at Telkom SA as a Wireline Technology Strategist.
Johan Meyer, Department of Electrical and Electronic Engineering Science, University of Johannesburg
Head of the Photonics Research Group
Johan Burger, National Metrology Institute of South Africa
Principal Scientist in Optical Frequency Standards and Photonics Technologies


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