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Sensing properties of fiber Bragg gratings in small-core Ge-doped photonic crystal fibers

We report about fiber Bragg gratings (FBGs) inscribed in two different types of small-core Ge-doped photonic crystal fibers with a UV laser. Sensing properties of the FBGs were systematically investigated...

Morphology-sensitive Raman modes of the malaria pigment hemozoin

Resonance Raman spectroscopy was applied for investigating the malaria pigment hemozoin, which is an important target structure of antimalarial drugs. Morphology-sensitive low wavenumber modes of hemozoin...

UV cross-linking of unmodified DNA on glass surfaces

The performance of DNA microarrays strongly depends on their surface properties. Furthermore, the immobilization method of the capture molecules is of importance for the efficiency of the microarray in...

ArF laser induced pulse absorption in fused silica (type III): Modeling the fluence and repetition rate dependence

At 193 nm, weak stationary bulk absorption coefficients astat in standard and experimental grade fused silica (type III) are measured in dependence on the laser fluence H and repetition rate f. The samples...

Raman and CARS microspectroscopy of cells and tissues

Raman spectroscopy has been recognized to be a powerful tool to study cells and tissues because the method provides molecular information without external markers such as stains or radioactive labels....

Unique temperature sensing characteristics of CO2-laser-notched long-period fiber gratings

Long-period fiber gratings (LPFGs) are written by use of a focused CO2 laser beam to notch periodically on the surface of optical fibers. Temperature characteristics of the CO2-laser-notched LPFG are investigated...

Optical fiber sensors using hollow glass spheres and CCD spectrometer interrogator

Hollow glass micro-spheres, firstly used to make fiber optic sensors for high hydrostatic pressure, have been interrogated using a high-resolution CCD-based spectrometer, to give far better precision than...

Extending the narrow-bandwidth tunability of a thin disk Yb:YAG laser regenerative amplifier

Optical fiber Bragg grating hydrogen sensor based on evanescent-field interaction with palladium thin-film transducer

Fiber Bragg grating (FBG) sensors in single-mode optical fibers are widely applied for measurement of temperature and strain. If exposing FBG sensors to an external analyte by planar side-polishing technique...

Opportunities of fiber optic sensors and their applications-Editorial