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. 2014 Dec 18;4:7528. doi: 10.1038/srep07528

Figure 1. Working principle of CROW-based biochemical sensors in the spatial domain.

Figure 1

(a) Schematic of a SOI CROW sensor comprising eight coupled microring resonators in an add-drop filter configuration. (b) Illustration of an imperfect eight-element CROW, including the inhomogeneously broadened transmission bands in a buffer solution and a solution under test, and the complete set of eigenstate normalized pixelized mode-field-intensity distributions upon n0, {Aj}. Insets: (i) Pixelized mode-field-intensity distribution upon n0, B(λp). (ii) Pixelized mode-field intensity distribution upon a small Δn, B′(λp).