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We herein discuss a prism coupling hollow-core metal-cladded waveguide (HCMW) sensor that uses ultrahigh-order modes (UHM) for sensitive absorption detection of glyphosate. In our method, modified chromogenic glyphosate in the hollow-core serves as guiding medium for high-power wave propagation. Prism coupling is employed to generate attenuated total reflection (ATR) dips of the UHM. The depths of...
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