Optical and Quantum Electronics

, Volume 29, Issue 3, pp 379-392

First online:

Asymmetric multimode Y-junction splitters

  • W. M. HenryAffiliated withDepartment of Electronic Engineering, La Trobe University
  • , J. D. LoveAffiliated withOptical Sciences Centre, The Australian National University

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The wavelength-independent, non-reciprocal splitting properties of the asymmetric, multimode Y-junction make it an ideal device for use as a low-loss, low-power tap in a concatenated linear bus. The properties of a two-dimensional slab model of the junction are investigated and the results of ray-tracing, modal and numerical beam propagation method (BPM) techniques are compared. Minimization of splicing loss between the ports of a square-core, three-dimensional buried channel waveguide version of the device and a multimode fibre is also addressed.