Chalcogenide - Halide Glasses For Optical Waveguides

Lezal, D.; Petrovská, Beáta; Kuncová, Gabriela; Pospı́šilová, Marie; Götz, Johannes

doi:10.1117/12.941147

Cited by 5 publications

(2 citation statements)

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“…The new type of FOE the called V-taper (see Figure 2 D), was developed for FOCS in the reflection arrangement for measurement in human, animal, plant cells or very small volumes (order µL) of special liquids (urea, a drop of perspiration, and plant exudates). The polymer fibers (POF) for the visible spectra range are often used in industry, biology and medicine due to their low cost and mechanical properties [ 18 , 30 , 31 , 32 , 33 ]. This type of fibers compared with silica base fibers is more flexible and cheaper.…”

Section: Optical Principles Of Fiber Chemical Sensors and Biosensomentioning

confidence: 99%

“…The sensor system using the microstructure polymer optical fiber was described in [ 31 ]. Chalcogenide fibers were developed for middle IR spectral range up to 10.6 µm—the wavelength of a CO 2 laser [ 8 , 32 , 33 ]. The application of chalcogenide fibers into FOCS or FOBS in the medical field is limited by their disadvantages such as toxic and fragile fiber materials.…”

Section: Optical Principles Of Fiber Chemical Sensors and Biosensomentioning

confidence: 99%

See 1 more Smart Citation

Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors

Pospı́šilová

Kuncová

Trögl

2015

Sensors

171

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This review summarizes principles and current stage of development of fiber-optic chemical sensors (FOCS) and biosensors (FOBS). Fiber optic sensor (FOS) systems use the ability of optical fibers (OF) to guide the light in the spectral range from ultraviolet (UV) (180 nm) up to middle infrared (IR) (10 µm) and modulation of guided light by the parameters of the surrounding environment of the OF core. The introduction of OF in the sensor systems has brought advantages such as measurement in flammable and explosive environments, immunity to electrical noises, miniaturization, geometrical flexibility, measurement of small sample volumes, remote sensing in inaccessible sites or harsh environments and multi-sensing. The review comprises briefly the theory of OF elaborated for sensors, techniques of fabrications and analytical results reached with fiber-optic chemical and biological sensors.

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Section: Optical Principles Of Fiber Chemical Sensors and Biosensomentioning

confidence: 99%

Section: Optical Principles Of Fiber Chemical Sensors and Biosensomentioning

confidence: 99%

Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors

Pospı́šilová

Kuncová

Trögl

2015

Sensors

171

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Opto‐ChemicalCO₂Sensors

Gerlach

Oelßner

2019

Carbon Dioxide Sensing

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The first ZnBr₂‐based upconversion glass fiber waveguide

et al. 1997

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Resonant conversion of near-infrared (NIR) to visible (VIS) light, so-called upconversion (UC), is one approach to the development of compact and efficient VIS solidstate lasers, which are of most interest in optical storage, display, and medical applications. In contrast to NIR frequency doubling and VIS semiconductor lasers, UC in principle permits high laser power in narrow bands."] UC processes can be observed in many lanthanide-(mainly Er-, Tm-, Pr-, and Ho-) containing dielectric hosts. Because of the structure of the energy levels of lanthanide ions, UC is often based on excited-state absorption (ESA) or energytransfer upconversion (ETU).[21 Up to now, UC lasers have been implemented using lanthanide-doped fluoride and oxide crystals and heavy metal fluoride glass fibers.[31 In the search for new UC laser hosts, glasses that can be drawn into fibers are seen as very attractive materials.Waveguiding fibers guarantee that the exciting NIR radiation has a high density along the entire absorption medium, thereby lowering the laser threshold power. A further advantage is that the long interaction length allows the concentration of the activator ions to be reduced, thereby minimizing concentration quenching and facilitating heat removal. ['] Because of the advantages of the fiber geometry compared to other laser geometries, most progress in UC lasers in the past has been made using UC fluoride glass fibers. Continuous-wave laser action at room temperaturethe most attractive process for the above mentioned applications-was first demonstrated using fluorozirconate (ZBLAN) glassFor the further development of UC fiber materials, emphasis is now placed on the reduction of their phonon energies in order to significantly slow down non-radiative multiphonon relaxation and thus increase UC Phonon energies of dielectric hosts are reduced by introducing heavier anions. In this way, multiphonon losses of fluoridebased glasses were significantly and the UC efficiency of ZrF4-based glasses improved. ['21). In the past, chloride-and bromide-based glasses were investigated because of their high IR transparency, which makes them very attractive for fiber delivery of IR laser light (e.g., C02 laser at 10.6 pm).[13,141 Concentrating on UC, waveguides based on such heavier halides should combine high fluorescence quantum yields with the advantages of the fiber geometry and are expected to facilitate the step from UC luminescence to UC laser action. However, due to the high moisture sensitivity of heavier halide based UC glasses,[''-'s1 no optical fibers only a few micrometers thick have yet been produced.In this paper, we describe the first heavier halide based upconversion fibers. To our knowledge, they are also the first optical waveguides based on a heavier-halide glass to be reported. The fibers are made of a new ZnBr2-containing UC glass and Er3@ as the activator ion. On excitation at 800 and 980 nm, this glass shows bright greenish and turquoise luminescence, respectively. More importantly, using this glass and implementing...

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Chalcogenide - Halide Glasses For Optical Waveguides

Cited by 5 publications

References 1 publication

Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors

Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors

Opto‐ChemicalCO₂Sensors

The first ZnBr₂‐based upconversion glass fiber waveguide

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Chalcogenide - Halide Glasses For Optical Waveguides

Cited by 5 publications

References 1 publication

Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors

Fiber-Optic Chemical Sensors and Fiber-Optic Bio-Sensors

Opto‐ChemicalCO2Sensors

The first ZnBr2‐based upconversion glass fiber waveguide

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Opto‐ChemicalCO₂Sensors

The first ZnBr₂‐based upconversion glass fiber waveguide