This PDF file contains the front matter associated with SPIE Proceedings Volume 8787, including the Title Page, Copyright information, Table of Contents, Introduction, and Conference Committee listing.

In this article experimental investigation of differential mode delay (DMD) of regular multimode fiber links is presented. Measurement of DMD depending on input conditions for multimode fiber of different generation are executed. The measurement technique is described. Analysis of received data is carried out.

In this paper application of dispersion managed soliton in Radio-over-Fiber system was investigated. The realization of dispersion management by inserting dispersion compensation fiber spools in optical cable closures was proposed. Numerical simulation of RoF signal propagation in soliton regime based on system of Nonlinear Schrodinger equations was carried out. The performance of RoF system for different parameters of dispersion map was estimated by means of eye-diagram and Q-factor.

This paper presents results of investigation on cross-phase modulation effect and influence of polarization effects on it. It is shown that fast polarization scrambling can effectively reduce impairments caused by cross-phase modulation in the case of NRZ signal.

Photonic beam forming networks benefit from the broad bandwidth and low attenuation of optical waveguides. The performance of this approach is maximized by placing the opto-electrical conversion (photodiode) directly at the feeding point of the antenna. In this work, such a setup that combines the optical true time delay (TTD) technique and photonic feeding is designed and demonstrated with a four element array of Vivaldi antennas working in the broad frequency range from 0.5- 2.5 GHz. Measurements are presented and discussed.

Method for mode coupling coefficient estimation of arbitrary order guided modes at the splice of diverse optical fibers under axial and angular misalignments is proposed. It is based on the well-known overlap integral method and modified Gaussian approximation been generalized for analysis of the weakly guiding optical fibers with an arbitrary axialsymmetric refractive index profile. Analytical expressions for the arbitrary order mode coupling coefficients under splice misalignments were developed. Some results of proposed method approbation are represented.

An improved fiber optic connector alignment system for fiber optic cable links subjected to vibrations is proposed. It is based on interconnection with longitudinal gap. Model for analysis of proposed fiber optic connection is represented. It uses well known overlap integral method and modified Gaussian approximation been generalized on weakly guiding optical fibers with an arbitrary refractive index profile. Results of simulation of proposed connection under axial and angular misalignments and combination of both singlemode and multimode fibers are represented.

This paper presents a new double-frequency method for the instantaneous frequency and amplitude measurement of unknown microwave signal. Using the specific interaction of double-frequency radiation and FBG (fiber Bragg grating) with a π phase shift allowed us to obtain measuring characteristics, that are independent of the energy fluctuations of the optical carrier and the microwave signal, and reduce measurement inaccuracy caused by temperature instability of the spectral characteristics of used elements.

This paper presents a novel method for characterization of gain spectrum of stimulated Mandelstam-Brillouin scattering (SMBS) in single-mode optical fiber. This method is based on the usage of double-frequency probing radiation. For conversion of the complex SBS spectrum from optical to the electrical field single-sideband modulation is used. Detection of double-frequency components position in the gain spectrum occurs through the amplitude modulation index of the envelope and the phase difference between envelopes of probing and passing components.

The complex multimode systems diagnostic approach with examples non-harmonic spectral analysis of telecommunication systems shapers pseudo-random signals, and deformation properties of polymeric materials are considered in that paper.

In the paper an approach to improve diffraction efficiency of a transmission concave holographic grating for a flat-field spectrograph is presented. The proposed method is based on numerical optimization of a merit function. Each iteration of the procedure includes definition of the grating recording parameters and the spectrum position from conditions of aberration correction, estimation of the diffraction efficiency by means of the Kogelnik coupled-wave theory equations, and checking boundary conditions. It’s shown on a certain example that the technique allows to obtain high spectral resolution and increase the diffraction efficiency. Modeling results and comparison with accurate RCWA computation are provided as well.

The main optical and electric characteristics of the combined cable with optical fibers and copper conductors for installation along the railways are considered. The cable design is described. Results of tests the cables ability to mechanical loadings and results of measurement of PMD are given. It is shown that the manufacturing techniques of the combined cable do not make considerable change of optical and electric characteristics of optical fibers and conductors in a cable.

The article is devoted to development of a quantitation parameters of the pulse distortion method occurring under the influence of birefringent optical fibers effect. It is analyzed the existing methods of an assessment of those distortions used in communication networks. Developed scheme of measurements allow determining the effective shift and pulse widening for each of the meanings of wave length incoming radiation. This method can be used for the analysis of polarization mode dispersion in wavelength-division networks.

The fluctuation-noise method for proton-exchange membrane fuel cell diagnostic is suggested. It has been experimentally confirmed that fuel cell technical state has influence on the characteristics of electrical fluctuations and the diagnostic features of fuel cell fluctuation characteristics could be assumed as the basis for fuel cell technical state diagnostics systems development. It has been shown that an incorrect fuel cell water balance can be detected by means of electrical fluctuation parameter measurement.

The paper considers the implementation of innovative strategy of predictive parameter control of outside plant communication (OPC) for maintenance of fiber optic communication lines (FOCL). The choice of a predictive control method is reasonable. Realization of this technology for estimation the maintenance effectiveness of OPC FOCL by criterion of reliability is shown on the example of calculation.

This paper is concerned with the applications of polarization reflectometry for identification and localization of defects of various types in the fiber optical lines. The methods of physical simulations of various defects in optical fibers are described. The methods and algorithms for polarization optical time domain reflectometer (POTDR) data processing are represented. The results of laboratory and field tests are represented.

In this paper an experience of an inter-institutional collaboration in teaching optics and photonics at Kazan National Research Technical University - KAI is described. Cooperation with international scientific societies is especially emphasized among other directions. Particularly, such a new form of the cooperation as establishment of a local student chapter of the societies is considered. The main possibilities of students’ professional development provided by this program are listed. Individual and collective activities are distinguished and described in details. We also represent our view on creation and management of such chapter. It is concluded that the student chapter program can help to enhance an optics and photonics teaching system.