High index contrast polymer waveguide platform for integrated biophotonics.
We present detailed characterization of a unique high-index-contrast integrated optical polymer waveguide platform where the index of the cladding material is closely matched to that of water. Single-mode waveguides designed to operate across a large part of the visible spectrum have been fabricated and waveguide properties, including mode size, bend loss and evanescent coupling have been modeled using effective-index approximation, finite-element and finite-difference time domain methods. Integrated components such as directional couplers for wavelength splitting and ring resonators for refractive-index or temperature sensing have been modeled, fabricated and characterized. The waveguide platform described here is applicable to a wide range of biophotonic applications relying on evanescent-wave sensing or excitation, offering a high level of integration and functionality. The technology is biocompatible and suitable for wafer-level mass production.
Halldorsson
Jennifer
J
Department of Physics, Science Institute, University of Iceland, Dunhagi 3,IS-107 Reykjavik, Iceland.
Arnfinnsdottir
Nina B
NB
Jonsdottir
Asta B
AB
Agnarsson
Björn
B
Leosson
Kristjan
K