This PDF file contains the front matter associated with SPIE Proceedings Volume 7992, including the Title Page, Copyright information, Table of Contents, Introduction, and the Conference Committee listing.

We demonstrate optical comb generator based on dual drive Mach-Zehnder modulator with tunable output spectrum and its application in ROF filters. Mathematically it has been shown how to obtain comb spectrum with adjusted number of harmonics with desired amplitudes and necessary wavelength separation. The results of numerical simulations are presented.

Polarization mode dispersion (PMD), at present, is one of the most meaningful effects, limiting bit rates in both TDMand WDM-systems, and non-regeneration distance. PMD influence becomes significant for signal quality at bit rates of more than 10 Gbit/s per channel. PMD compensators development is in progress now all over the world with using different models, methods and technologies. We offer PMD compensation model based on the combination Faraday rotation of optical radiation and LiNbO₃-based differential group delay emulator. Such way presents applied interest because of simplicity of its body of mathematics.

In this paper we discuss unconventional detection technique also known as «full resolution receiver». This receiver uses Gaussian probability mixtures for interference structure adaptation. Full resolution receiver is alternative to conventional matched filter receivers in the case of non-Gaussian interferences. For the DS-CDMA forward channel with presence of complex interferences sufficient performance increasing was shown.

A well-known dense dispersion managed solitons (DDMS) technique is applied to increase bandwidth of metropolitan area network fiber optic links. This technique requires an installation of optical cables with dispersion compensating fibers (DCFs), which leads to high costs for upgrading of installed fiber optic links. To become the DDMS more applicable, we propose to place dispersion compensating module or optical cable delivery lengths with DCFs in optical fiber closures. Here results of numerical simulations of optical pulse propagation estimation in fiber optic link with DCFs in optical closures are represented.

In this article present results of measurements for refractive index profile of silica graded multimode optical fibers are presented. The measurement technique is described. Estimation of parameters for profile defects of investigated samples of multimode optical fibers is received. Analysis data for effect of profile defects of graded multimode optical fibers (MMF) on differential mode delay (DMD) is presented.

Signal power redistribution between a few modes in a conventional multimode optical fiber have been simulated under laser excitation with central and offset launch conditions through the special singlemode optical fiber been installed between pigtailed laser and multimode fiber (MMF).

Method for design silica GeO2-doped graded-index multimode optical fibers 50/125 with low differential mode delay (DMD) is introduced. It is based on synthesis of special refractive index profile, providing the equalization of guided mode group velocities. Here the objective function is represented as a sum of squares of deviations between points of current iteration group velocity map, been calculated over principal mode numbers, and certain reference group velocity value. The number of guided modes, taken into account, depends on type of laser source and launch conditions. Results of proposed method approbation for synthesis of multimode optical fiber with low DMD under both VCSEL and singlemode Fabry-Perot laser excitation with central and offset launch conditions are represented.

This article presents a solution to the synthesis of selective dielectric mirrors for the needs of integrated optics.

Design of differential mode delay compensating microstructured multimode fiber (MMF-DCF) and microstructured multimode fiber optimized for 0,85 mkm wavelength window which imitate ideal graded refractive index profile of conventional multimode fiber are presented in this paper. The main feature of the proposed fibers is that they are capable of being constructed without the need of germanium doping, this type of fibers are known as microstructured fibers. The axially oriented small air holes, that run the entire fiber length, are configured to provide required refractive index profile and more focused interaction with selected modes. Results of microstructured multimode fiber and differential mode delay compensating microstructured multimode fiber design and results of group velocity calculation for selected modes with full vector finite element method are presented. It is shown that the proposed approach enables the synthesis of microstructured MMF-DCFs and provides resulting group velocities diagram of the excited modes, close to the desired optimal.

In the given article the results of work on creation of the nonlinear optical switch (NOS) model are presented. In the article the switch working environment creation technology with use of polymers is described. Offered polymeric materials possess the expressed dependence of optical properties on external influence.

All-optical microwave filter has been a topic of interest for over two decades because of the many advantageous features such as large time-bandwidth product, wide tunability, high Q-factor, low loss, light weight, and immunity to electromagnetic interference offered by photonic devices. All-optical microwave photonic filter is a system used to implement microwave filtering in the optical domain, which can provide a large tunability and a high Q factor which are usually difficult to realize through conventional electronic methods. In addition, since the microwave signal is processed directly in the optical domain without additional optical-electrical and electrical-optical conversions, the photonic microwave filters are particularly suitable for applications such as optically controlled phased-array antennas, radio-over-fiber (RoF) systems, and other microwave-photonic links (MPLs). For these reasons, photonic microwave filters have attracted considerable interest for a few years.

Problems of refractometric optical biosensors and courses of their fast and technological decision are considered. In particular the resolution and sensitivity increase, formation of stable on amplitude and spectrum cleanliness probing radiation, allocation of refractometric information from a complex of sensor parameters defined by universality of FBG response to changes of pressure, temperature and refraction factor, construction of dot type sensors and the distributed networks on their basis are analyzed.

The methodical approach to substantiation of structural minimization of fiber-optical sensor nets for tool monitoring of ecologically and industrially dangerous materials storages is stated in the paper. The general statement of a problem is considered and methods and techniques for its decision, based on two-frequency and two-wave probing methods of fiber- optical sensors based on Bragg gratings, and also analysis of the Brillouin scattering level for security perimetric fiber-optical systems are offered.

The article presents the strategy analysis for technical operation of fiber optic transmission lines. Besides, the article deals with maintenance strategies of telecommunication optical cables; it formulates the problems of maintenance improvement in fiber optic transmission lines and methods for their solution.

The purpose of the work is the investigation of possible implementation of Ethernet 10 Gbps system (in transport variation) using on-stream optical fibre transmission lines in the following areas of telecommunication JSC "Bashinformsvyaz". The chromatic and polarization mode dispersion of optical fibers (OF) is supposed to be a significant distorting factor in these areas. The measurements' results of characteristics of the given kinds of dispersion are presented in the report, and also the theoretical estimation of the distortion level included into the digital signal. According to the results of measurement and theoretical estimation the correspondent conclusions were introduced.

Physical simulation of optical fiber cladding defects and experimental investigation results are described in present paper. By these results it is confirmed that assumption about fiber light-guide cladding defects localization on short length of optical fiber by comparison polarization backscattering characteristic with sliding correlation test is correct. Samples of defects localization on less then 2 km optical fiber with less then 100 m error are represented.

In this paper the principles of polarization optical time domain reflectometry and features of developed POTDR prototype model are described. The approbation of methods for analysis of POTDR trace on experimental setup was carried out. The results of field inspection of fiber optical communication lines including measurements of chromatic dispersion and polarization mode dispersion are represented. Specificities of localization of fiber section with high level of polarization mode dispersion using PODTR are noted.

In article results of experimental researches of incrementation of attenuation in an optical fiber at deformation of loose tubes are presented. The loose tubes with 4, 8, 12 fibers made from polybutyleneterephthalate were exposed to tests. It is shown that critical value of deformation of a loose tube at which registered incrementation of attenuation exceeds threshold value of losses (0,05 dB), changes depending on the square of the area of cross section of loose tube without fibers practically under the linear principle. The received results of researches can be used for the forecast of optical cable stability to influence of crushing loadings.

In article results of experimental researches of optical cable behavior in microducts at water freezing are presented. Researches were carried out with the polymeric and steel microducts. Researches have shown that loadings which influence on a cable at water freezing in the steel microduct is higher than in polymeric and can lead to attenuation increase in the optical fiber. In the polymeric duct loadings more low, than in the steel. However if a polymeric microduct freeze in ice, pressure upon a cable as can cause an incrementation of attenuation.

The program of courses is recommended for the experts working in endoscopy area, surgery, diagnostics, to developers of optical, optoelectronic and electronic equipment, and also for students and the post-graduate students of telecommunication high schools in addition trained on specializations of biomedical engineering. It urged to help the future researcher, engineer and doctor to understand mechanisms of images formation and display, to understand more deeply procedures of their processing and transfer on telecommunication channels of the various natures, to master modern reports of record and video and audio information reproduction. The separate section is devoted to questions of designing of surgical toolkit compatible with fiber-optical endoscopes.