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Endoscopic fiber catheter and its applications

An endoscope is an optical device that is used to study hard-to-reach cavities of mechanisms, machines, and equipment. In its simplest form, it is a long flexible or rigid fiber bundle with a lens, optical system, illumination, and eyepiece. In the case when the optical fiber is used for image transmission, such an endoscope is...

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Fluorescence fiber probe for nanoscale thermometry

High-sensitivity temperature measurements require the reduction of the auto-fluorescence produced by an optical fiber probe. Additionally, a novel fluorescence fiber probe allowing decreasing the noise has been developed by fusion-splicing a photonic crystal fiber (PCF) and a traditional single-mode fiber.  The operation of the novel fiber probe was already tested experimentally by evaluating the auto-fluorescence...

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Endoscopic fiber catheter offers in vivo imaging

Recently a new optical fiber-based endoscopic imaging system has been designed. The fiber optic technology combines “narrowband red-green-blue reflectance with optical coherence tomography and autofluorescence imaging”. The operating principle of such a fiber optic system is based on a submillimeter diameter rotary-pullback double-clad endoscopic fiber catheter that allows performing sample illumination and detection. Compared to...

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Basic information about quantum cascade laser

Such advantages as compact size, high reliability, and ease of application make conventional quantum cascade lasers ideal in telecommunications and consumer electronics in applications such as optical fiber communications and compact disk players. To be more precise, the quantum cascade lasers are considered to be a specific type of semiconductor laser, generally emitting mid-infrared light....

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Chalcogenide optical fibers: fabrication and applications

The mid-infrared spectral region plays a crucial technical and scientific role in a great range of research fields and applications. Herewith, the researches about mid-infrared supercontinuum generation based on optical fiber technology are regarded as the most popular in the last decades because optical fibers offer such benefits as broad wavelength coverage and high coherence....

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Floating magnetic microrobots based on optical fiber technology

Minimally invasive surgery finds its popularity more and more to target small lesions resulting in high demand for miniaturized medical devices (microcatheters, articulated micro-forceps or tweezers). Although the precise integration and operation of chemical and physical optical sensors still present numerous challenges, optical fiber technology makes a great contribution to the potential solution to the...

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The differences between glass and plastic optical fibers

Conventional optical fibers are considered to have poor flexibility, while their diameters are not compact enough. Moreover, such fiber optic systems are relatively fragile and can be damaged by impact, they have a heavy mass because of a relatively large specific gravity. Finally, the cost of the optical fibers, as well as the fiber optic...

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Fiber optic probes for MIR spectroscopy

Nowadays optical fiber systems based on fiber optic probes for chemical sensing become more and more accessible since they offer a wide range of applications. Techniques based on fiber optic technology are quantitative which means the opportunity to be calibrated almost in all cases. Herewith, such features of optical fibers as the flexibility and the...

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Fiber optic probes provide efficient diagnostic and sensing

Fiber optic probes are used as fiber sensors for minimally invasive measurements into the human body for a long time. To be more precise, an optical fiber sensor is considered to be a special device that allows transforming an input parameter or measurand into another parameter known as the signal. For example, it is possible...

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Optical fiber technology is on guard for equipment against laser attacks

An international group of researchers offers a new optical fiber technology in order to safeguard drones, surveillance cameras and other equipment against laser attacks, which can deactivate or break the equipment. This fiber optic technology is known as optical limiting. To be more precise,  optical fiber technology allows telecom switching without the application of electronics....