Article ID Journal Published Year Pages File Type
850167 Optik - International Journal for Light and Electron Optics 2013 4 Pages PDF
Abstract

A high sensitive and compact refractive index sensor based on slotted photonic crystal waveguide (S-PhCW) is demonstrated. This design is worked on a Mach–Zehnder interferometer (MZI) configuration with S-PhCW as the measuring arm, which can be used to detect any changes in refractive index that correspond to different concentration of the measuring liquid. Combining the slow light enhancement in photonic crystal waveguide (PhCW) with the advantage of excellent optical confinement in slot waveguide, the sensitivity of this simple scheme can reach to 2.3 × 109 nm/RIU with the active region of only 1 mm long.

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Physical Sciences and Engineering Engineering Engineering (General)
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