Polymer Waveguide-Based Optical Sensors—Interest in Bio, Gas, Temperature, and Mechanical Sensing Applications

Integrated Optical Refractometer based on U-shape bend Waveguide Structure for (bio-) Chemical Sensing Applications

This paper proposes and describes a design of an integrated refractive index sensor for (bio-) chemical sensing applications based on a U-shape bend waveguide structure. The proposed structure is formed by connecting four-bend waveguides and optimized using beam propagation method so that the output power has a function of refractive index of measurand liquid. The results show that the designed...

H2S Gas Detection Based On Optical Waveguide

The presence of H2S ( hydrogen sulphide ) gas in oil and gas exploration can give rise to critical safety problems because of its corrosivity and toxicity. In order to protect people and equipment, there is a need for a real-time,remote and reliable seneor that can detcet the concentration of H2S gas. The best way to monitor H2S gas concentration is optical-electrochemical sensor technology. At...

Conjugated Polymer Nanoparticles in Bio- Sensing and Bio-Imaging

Polymer membrane-based ion-, gas- and bio-selective potentiometric sensors.

Recent progress in the design of new polymer membrane-based potentiometric ion-, gas- and bio-selective electrodes in chemistry laboratories at the University of Michigan (Ann Arbor) is reviewed. Emphasis is placed on describing the performance of devices for measuring anions (e.g., salicylate, thiocyanate, chloride and heparin) and gases (e.g., ammonia, carbon dioxide and oxygen) in biological...

Single-end-access strain and temperature sensing based on multimodal interference in polymer optical fibers

We develop a single-end-access strain/temperature sensor configuration based on multimodal interference in a polymer optical fiber (POF) with an extremely high sensitivity. The light Fresnel-reflected at the distal open end of the POF is exploited. We obtain high strain and temperature sensitivities of –122.2 pm/με and 10.1 nm/°C, respectively, which are shown to be comparable to those in two-e...