Proposal of highly sensitive optofluidic sensors based on dispersive photonic crystal waveguides

Details Proposal of highly sensitive optofluidic sensors based on dispersive photonic crystal waveguides Proposal of highly sensitive optofluidic sensors based on dispersive photonic crystal waveguides

2007-03-06

arxiv.org/abs/physics/0703063v1

J. Opt. A: Pure Appl. Opt. 9, S463-S467 (2007).

Physics

Optics

8 pages including 3 figures. Accepted for proceedings of Nanometa to appear in J. Opt. A: Pure Appl. Opt

Scientific paper

10.1088/1464-4258/9/9/S30

Optofluidic sensors based on highly dispersive two-dimensional photonic crystal waveguides are theoretically studied. Results show that these structures are strongly sensitive to the refractive index of the infiltrated liquid (nl), which is used to tune dispersion of the photonic crystal waveguide. Waveguide mode-gap edge shifts about 1.2 nm for dnl=0.002. The shifts can be explained well by band structure theory combined with first-order perturbation theory. These devices are potentially interesting for chemical sensing applications.

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