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Manufacturing end-of-fiber optical components able to realize optical functions ranging from a simple lens to more complex functions such as mode selective components is a decisive but a priori complex task owing to the fiber core dimensions. Effective low cost methods allowing to grow polymer components by free-radical photopolymerization using the light coming out of the fiber have recently been reported. A novel phenomenological model of the photopolymerization process underlying is here given and used to simulate the polymer component growth in a three dimensional time-resolved manner. The simulations results are thus used to understand and optimize the component growth conditions, focusing particularly on the role of oxygen either present in the atmosphere or dissolved in the solution.

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The reflection parameters of the right-angled waveguide tee-junction containing a dielectric post resonator are, in general, except for one position of the resonator, different at the main and the side waveguide ports. Its description therefore requires two different definitions of its port variables. One purpose of this article is to locate the position which displays electrical symmetry at the three ports. This is done at a frequency of 13.25 GHz in WR75 waveguide. Another is to replace the dielectric resonator by a magnetized gyromagnetic one in order to produce a degree-1 H-plane tee-junction circulator. V C 2013 Wiley Periodicals, Inc.Int J RF and Microwave CAE 24:55-58, 2014.