Open AccessTransition, radiation and propagation loss in polymer multimode waveguide bends
Author(s) -
Ioannis Papakonstantinou,
Kai Wang,
David R. Selviah,
FA Fernández
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.000669
Subject(s) - optics , waveguide , multi mode optical fiber , materials science , insertion loss , beam propagation method , radius , coupling loss , return loss , bend radius , transmission loss , optical fiber , refractive index , bending , physics , telecommunications , computer security , computer science , antenna (radio) , composite material
Design curves for insertion loss of multimode polymer waveguide 90 masculine bends are reported as a function of bend radius for several waveguide widths. For the first time, to our knowledge, in multimode rectangular waveguides the insertion loss is resolved into its components of transition, radiation and propagation loss, in order of decreasing strength, separating them from input and output coupling loss by calibration and comparison of experimentally measured and beam propagation method (BPM) modeled curves. We used the method of nested bends for the first time in multimode polymer waveguides to calculate the propagation loss on a small substrate without using destructive cut-back. The lowest loss of 0.74 dB occurred for a 50 mum square cross section, Deltan=0.0296, 13.5 mm radius waveguide bend.