Optična vlakna in pasivne optične naprave
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All-fiber micromachined microcell
This Letter presents an open-path, all-fiber microcell and a micromachining method for its production. The proposed micromachining method utilizes the selective etching of a purposely designed phosphorus-doped fiber that is spliced in between two standard…
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Optical fiber for dispersion addressing
This letter presents a fully distributed forward propagating system, suitable for use with microbend sensors. The principle relies on selected mode launch in specially designed multimode fiber where a short pulse is launched into the…
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Opportunities to Enhance Multimode Fiber Links by Application of Overfilled Launch
This paper investigates possibilities for the practical design of high-performance multimode fibers (MMFs) that can provide bandwidths in excess of 10 GHz …km in an overfilled regime of operation. Analysis of standard MMF in an…
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All-optical, thermo-optical path length modulation based on the vanadium-doped fibers
This paper presents an all-fiber, fully-optically controlled, optical-path length modulator based on highly absorbing optical fiber. The modulator utilizes a high-power 980 nm pump diode and a short section of vanadium-co-doped single mode fiber that…
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Microbend sensor structure for use in distributed and quasi-distributed sensor systems based on selective launching and filtering of the modes in graded index multimode fiber
This paper describes a novel optical fiber microbend sensor architecture which my be utilized in distributed and quasi-distributed measurement. The actual sensor element is graded index multimode fiber coupled to the measurand field through the…
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Propagation of the fundamental mode in curved graded index multimode fiber and its application in sensor systems
A novel principle of light transmission through very small radius bend in optical fibers is presented. The potential applications of the proposed structure are fiber optic sensors and other fiber optic systems. The design makes…
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Fiber-optic microbend sensor structure
We proposed and experimentally investigated a novel microbend sensor structure. The structure is composed of single-mode leads and multimode sensing fiber. The proposed structure exhibited a level of sensitivity as much as six times higher…
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Low-loss transmission through tightly bent standard telecommunication fibers
This letter presents a principle of low-loss light transmission through tightly bent standard telecommunication optical fibers. The design is based on selective launching and filtering of the fundamental mode in standard graded index multimode fiber.…
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A low bending loss multimode fiber transmission system
This paper presents a high bend tolerant multimode optical fiber transmission system that is compatible with standard 50 m graded index multimode fiber, in terms of achievable bandwidth and interconnectivity losses. When the 10 loops…
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All-fiber high-sensitivity pressure sensor with SiO2 diaphragm
The design and fabrication of a miniature fiber Fabry-Perot pressure sensor with a diameter of 125 μm are presented. The essential element in the process is a thin SiO2 diaphragm that is fusion spliced at…