| 摘要 |
Integrated optical waveguide evanescent field sensor for sensing of chemical and/or physical quantities, comprising a substrate carrying a waveguide layer structure provided with-a waveguide core layer (3) sandwiched between two cladding layers (4, 5) formed by a lower (4) and a upper cladding layer (5), of a lower refractive index than the waveguide core layer,-a sensing section comprising a sensing layer (10) included in the upper cladding layer, wherein said sensing layer is exchangeable as a separate element.
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