Optical sensors are widely used for refractive index measurement in chemical, biomedical,
and food processing industries. Due to specific field distribution of the resonances, optical …

Optical fiber tips with the flat end-facets functionalized take the special advantages of easy
fabrication, compactness, and ready-integration among the community of optical fiber …

Surface plasmon devices mounted at the end-facets of optical fibers are appealing
candidates for rapid and point-of-care sensing applications, by offering a special dip-and …

In response to the requirements of small effective sensing volume for simultaneous
interpreting of resonant peaks with different sensing sensitivities, a surface plasmon …

In photoacoustic and ultrasound imaging, optical transducers offer a unique potential to
provide higher responsivity, wider bandwidths, and greatly reduced electrical and acoustic …

Carbon nanocoils (CNCs) are widely used in functional devices due to their helical
morphology, which can be utilized in the fabrication of functional materials with unique …

High sensitivity, broadband bandwidth, small size and scalability to a fine-pitch matrix of
ultrasound (US) sensors are essential for high-resolution ultrasonography and …

We demonstrate a phase-shifted Bragg grating waveguide (PS-BGW) fabricated by a direct
laser writing technique via two-photon polymerization as a high-frequency ultrasonic sensor …

We demonstrate a diaphragm-integrated ring waveguide coupler fabricated by the two-
photon direct laser wring technique as an ultrasonic sensor, which is integrated on an …

Plasmonic photonic nanostructuring on the end facets of optical fibers may enable extensive
applications of the miniaturized devices in sensors. However, the small area on the fiber tips …