INVESTIGATION OPTICAL FIBER BY DIGITAL HOLOGRAPHIC INTERFEROMETRY METHOD
Journal Title: Вісник Національного університету "Львівська політехніка", серія "Радіоелектроніка та телекомунікації" - Year 2014, Vol 796, Issue 2014
Abstract
The purpose of this paper is investigation the possibilities of applying methods of digital holographic interferometry to study the internal structure of the optical fiber, including the distribution of the refractive index in the cross -section. Modern development of micro-and nanotechnology requires the development of new approaches and methods for the diagnosis properties of mediums and objects, and research processes and structural changes that are taking place under the influence of external factors. In particular, diagnosis and metrology are important in the field of fiber technique since it is known that increasing the density of information that is transmitted through the optical fiber requires their micro- and nanostructuring. Optical microscopy is the classical method studying of the micro- and nanoscale mediums, phenomena and processes. However, main disadvantages are limitation of the spatial resolution due to diffraction effects, and the inability (or technical complexity) 3D imaging of phase microscopic objects. The coherent-optical methods including methods of holographic interferometry received the high actuality with the appearance of the coherent radiation sources which are the most promising tools for experimental investigation of the materials characteristics and properties of the phase and diffuse macro- and micro objects. At the same time, application of the holographic interferometry to study microscopic objects is only possible at combining it with classical microscopy. This combination allows produce the qualitative and quantitative diagnosis with a high sensitivity and precision as well as achieving image magnification. Indicated disadvantages will be disappeared when holographic interferometry and classical microscopy will be combined. This combination allows produce the qualitative and quantitative diagnosis with a high sensitivity and precision as well as achieving image magnification. In this work method of digital holographic interferometry to research the phase microobject are presented. Model of holographic interference microscope with a digital recording of holograms and receiving interferogram by subtracting two video signals has been developed. Technique investigation the distribution of refractive index in optical fibers has been developed. Experimental results of the distribution of the refractive index in the optical fiber are presented. It is shown that the sensitivity of the developed digital interference microscope depends on the characteristics of CCD and microscope zoom.
Authors and Affiliations
H. Petrovska, V. Varyshchuk, V. M. Fitio
Keywords
Related Articles
- EP ID EP459754
- DOI -
- Views 121
- Downloads 0
METHOD OF SMOOTHING INPUT LOAD ON THE ONLINE CHARGING SYSTEM
Charging users for a server operator billing involves performing a number of operations. Each service provided by the operator or service provider customers, charged at a separate scheme, as the bottleneck in the process...
THE METHOD OF INCREASE EFFICIENCY TO USE NETWORK RESOURCES ІN INFORMATION AND TELECOMMUNICATIONS SYSTEMS
For optimization of using physical resources of optical path, reducing the probability of blocking when laying new logical channels in this paper has been developed method of local distribution and control segment multis...
THERMODEGRADATION EFFECTS IN THICK-FILM ELEMENTS BASED ON SPINEL CERAMIC OF Cu- AND Co-ENRICHED COMPOSITIONS
The modern state-of-the-art and perspectives to resolve the problem on negative temperature coefficient thermistor element for sensor electronics were analyzed. It was shown that thick-film technology in application to m...
CDMA2000 CHANNEL MODELING BASED ON THE GILBERT–ELLIOT ALGORITHM WITHIN URBAN INFRASTRUCTURE
Any radio channel transferring information is a subject to data corruption. Especially it’s important for 3G mobile networks that use high frequency carrier wave and significantly increased data rate in channel. In this...
DATA FLOWS CONTROL IN DIGITAL TELECOMMUNICATION NETWORKS WITH HETEROGENEOUS TRAFFIC
The modified method of the adaptive forming of data flows and method of tuning of the control system with a direct feedback through current measurements of speed of shaper buffer filling is presented. The mathematical mo...