Laboratory for electro-optics and sensor systems
Institute of automation
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 usual microbend inducing structures. However, Read More …
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 use of graded index multimode Read More …
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 than that of the classical Read More …
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. The proposed system has demonstrated Read More …
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 of the proposed bend resistive Read More …
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 the hollow end of an Read More …
This paper presents a method for the efficient production of all-fiber semi reflective mirrors suitable for fiber sensors and other all-fiber device applications. The mirrors are obtained by the short duration etching of a standard single mode fiber in hydrofluoric Read More …
This paper presents an optical fiber-field access device suitable for use in different in-line fiber-optics systems and fiber-based photonics components. The proposed device u tilizes a thin silica micro-wire positioned in-between two lead-in single mode fibers. The thin micro-wire acts Read More …
This paper presents a maskless micromachining process that can reform or reshape a section of an optical fiber into a complex 3-D photonic microstructure. This proposed micromachining process is based on the etching rate control achieved by the introduction of Read More …
A combination of focused ion beam milling and chemical etching is proposed for the creation of Fabry-Perot cavities in microwires. Both simple cavities and cantilevers are created on 15 ?m-diameter microwires and characterized in temperature. The cantilever structure shows sensitivity Read More …
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