15 November 2010 Optical waveguide oscillating field sensor
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Based on ultrahigh-order modes in symmetric metal-cladding waveguide with millimeter scale, a new oscillating wave sensor is investigated to measure minute changes in various parameters of aqueous solution. In the proposed geometry, the sample acts as the guiding layer where oscillating waves propagate. Owing to the concentrated power in the sensing region and the use of the very sensitive ultrahigh-order modes and the unusual large Goos-Hänchen shift, it is demonstrated both theoretically and experimentally that its sensitivity is enhanced by one order of magnitude than that of evanescent wave sensor.
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Zhuangqi Cao, Zhuangqi Cao, } "Optical waveguide oscillating field sensor", Proc. SPIE 7847, Optoelectronic Devices and Integration III, 78470W (15 November 2010); doi: 10.1117/12.870926; https://doi.org/10.1117/12.870926

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