We describe the history, guiding mechanism, recent advances, applications, and future
prospects for hollow-core negative curvature fibers. We first review one-dimensional slab …

In the research field of hollow-core optical fiber (HCF), one type of fiber geometry with a
leaky mode nature has unexpectedly taken center stage over the last couple of years: the so …

Softphotonics has emerged as a new discipline that utilizes soft matter (ie, liquids, gels, bio‐
materials) as waveguide materials with versatile functionalities. The flexible properties of soft …

Specialty fibers have enabled a wide range of sensing applications. Particularly, with the
recent advancement of anti-resonant effects, specialty fibers with hollow structures offer a …

Photothermal spectroscopy with the optical pump-probe configuration has been used for
sensitive gas detection in hollow-core fibers. In this study, we demonstrate a new method of …

Simple structures are always a pursuit but sometimes not easily attainable. It took
researchers nearly two decades for conceiving the structure of single-ring hollow-core …

The performance of optical fiber communication, laser, and sensing systems is ultimately
limited by the attenuation of optical fiber, which cannot be lower than the barrier set by …

Microstructured optical fibers (MOFs) provide solutions for breaking through the bottlenecks
in areas of high-power transmission and high-efficiency optical waveguides. Other than …

Hollow-core fibers are advantageous for chemical sensing as they facilitate liquid infiltration
into the core over conventional porous core fiber. In addition, the requirement of less bulk …

Fiber-enhanced Raman spectroscopy was developed for the chemically selective and
sensitive quantification of the important antibiotic cefuroxime in human urine. A novel optical …