RPC Optolink Ltd

Zelenograd, Russia

RPC Optolink Ltd

Zelenograd, Russia

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Kostritskii S.M.,RPC Optolink Ltd. | Korkishko Yu.N.,RPC Optolink Ltd. | Fedorov V.A.,RPC Optolink Ltd.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

An optical voltage sensor is proposed that exploits the electric field dependence of transmission of a Mach-Zehnder interferometer fabricated on basis of the channel waveguides in electro-optic LiNbO 3. The device works in a transmission scheme, utilizing the long fibre transmission lines for input and output optical signals. The sensor has been used to measure AC electric fields in a range from 0.005 to 56 kV/cm, resulting in a linear sensitivity that may be further improved by tailoring of the optical and geometrical parameters of the fibre-pigtailed Mach-Zehnder interferometer. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).


Korkishko Y.N.,RPC Optolink Ltd. | Fedorov V.,RPC Optolink Ltd. | Prilutskii V.,RPC Optolink Ltd. | Ponomarev V.G.,RPC Optolink Ltd. | And 2 more authors.
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2012

The operation of Fiber Optic Gyro is based on the Sagnac Effect which states that light beams propagating along opposite directions in a rotating frame experience an optical path length difference. These two counter-propagating waves propagate within a closed fiber coil, and when this coil rotates the resultant phase difference is proportional to the rotation rate Ω. Fiber optic gyroscopes are desirable devices for many navigation and guidance applications because, being solid state devices, they have several major advantages including light weight, long working lifetimes, no moving parts and operate using low voltage power. In this paper the Optolink's single-axis and three-axis fiber optic gyroscopes are described. The Optolink's FOGs consist of the light-emitting diode, one or three photodetectors, circulators and polarization maintaining fiber couplers to divide the light into two or three parts, one or three sets of ring interferometers to sense one or three orthogonal angular rates, and installed PCB signal processing circuits. The ring interferometer consists of a multifunction integrated optic chip and polarization maintaining fiber coil, both these components are designed and fabricated by Optolink. The results illustrate the versatility of the technology, showing its potential to meet both the low-cost, compact sized needs of tactical guidance, as well as the very high performance needs of inertial navigation and precision applications. The optic and electronic blocks of closed-loop gyroscopes with integrated optic components are also considered in this paper. © 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).


Chernodarov A.V.,RPC OPTOLINK Ltd. | Patrikeev A.P.,RPC OPTOLINK Ltd. | Korkishko Ju.N.,RPC OPTOLINK Ltd. | Fedorov V.A.,RPC OPTOLINK Ltd. | Perelyaev S.E.,Moscow Institute of Electromechanics and Automatics
17th Saint Petersburg International Conference on Integrated Navigation Systems, ICINS 2010 - Proceedings | Year: 2010

Special features of a technology for half-scale development of the mathematical software support (MSS) of strap-down inertial satellite navigation systems (SISNS) are considered. The implementation of such a technology relies on modern recording equipment and permits one to optimize the MSS from the actual signals and on a set of the algorithms under study. A description for the SINS-500 system based on fiber-optic gyros is given as the object of half-scale development. The results of half-scale tests of the SINS-500 system are presented, which corroborate the fact that it is possible and expedient to apply the proposed technology to the creation of different-purpose SISNS which can be made to order.


Kostritskii S.M.,RPC Optolink Ltd. | Korkishko Y.N.,RPC Optolink Ltd. | Fedorov V.A.,RPC Optolink Ltd. | Sevostyanov O.G.,Kemerovo State University | And 2 more authors.
Journal of Applied Spectroscopy | Year: 2015

Based on experimental data on the shift of the fundamental absorption edge, we have quantitatively estimated the electro-optic coefficient r13 in proton-exchanged waveguides containing different HxLi1–xNbO3 phases. The phase composition of the waveguides was determined based on IR reflectance and micro-Raman spectroscopy data. We established that the electro-optic properties of the waveguides depend on their phase composition. The results obtained allowed us to optimize the process for preparation of phase modulators based on channel waveguides in LiNbO3 crystals. © 2015 Springer Science+Business Media New York


Kostritskii S.M.,RPC Optolink Ltd. | Chauvet M.,CNRS Femto ST Institute | Oui J.S.,CNRS Femto ST Institute | Aillerie M.,University of Lorraine | Sevostyanov O.G.,Kemerovo State University
Journal of Applied Spectroscopy | Year: 2015

We have experimentally studied the dynamics of self-focusing of light beams in chemically reduced lithium niobate crystals when they are uniformly heated. We have established that the pyroelectric effect leads to a change in the light-induced space-charge field, which results in compensation of the photorefractive self-action of the beams. © 2015 Springer Science+Business Media New York


Kostritskii S.M.,RPC Optolink Ltd | Korkishko Y.N.,RPC Optolink Ltd | Fedorov V.A.,RPC Optolink Ltd | Mitrokhin V.P.,Russian Academy of Sciences
Proceedings of SPIE - The International Society for Optical Engineering | Year: 2014

Temperature stability of magneto-optic sensor at a marked transient temperature gradient has been investigated. Our experimental study leads to the conclusion that the polarized gyro architecture with two quarter-wave retarders on the opposite sides of the fiber loop of Sagnac interferometer must be used to obtain a fiber-optic current sensor with the lowdrift behavior. © 2014 SPIE.


Kostritskii S.M.,RPC Optolink Ltd | Korkishko Y.N.,RPC Optolink Ltd | Fedorov V.A.,RPC Optolink Ltd | Mitrokhin V.P.,RPC Optolink Ltd | And 5 more authors.
Journal of the European Optical Society | Year: 2014

It has been established, that proton-exchanged LiNbO3 waveguides have a marked subsurface layer with structural disorder inducing degradation of electro-optical properties of these waveguides. At the same time, such a subsurface disorder is found to be less pronounced in soft proton-exchanged (SPE) waveguides in comparison with annealed proton-exchanged (APE) ones. The experimental samples of phase modulators fabricated by SPE technique exhibit a better electro-optical efficiency compared to the LiNbO3 modulators produced by the standard and improved APE techniques. © 2014, European Optical Society (EOS). All rights reserved.


Kostritskii S.M.,RPC Optolink Ltd. | Korkishko Yu.N.,RPC Optolink Ltd. | Fedorov V.A.,RPC Optolink Ltd. | Sevostyanov O.G.,Kemerovo State University
Workshop Proceedings - International Workshop on Nonlinear Photonics, NLP 2011 | Year: 2011

High photorefractive response is obtained in the photorefractive LiNbO 3 waveguides fabricated by the combined proton and copper exchange. It has been shown, that holographic recording with guided beams can be more effectively used, comparatively to recording with external beams, for fabrication of micro-Bragg reflectors in the photorefactive LiNbO 3 waveguides. © 2011 IEEE.


Kostritskii S.M.,RPC Optolink Ltd. | Aillerie M.,Supelec | Bourson P.,Supelec | Sevostyanov O.G.,Kemerovo State University
Workshop Proceedings - International Workshop on Nonlinear Photonics, NLP 2011 | Year: 2011

Our closed-aperture Z-scan study shows, that suppression of optical damage is possible to reach in reduced LiNbO 3 crystals with aid of transverse steady-state temperature gradient ∇T, when ∇T is above a specific threshold value. © 2011 IEEE.


Chernodarov A.V.,RPC OPTOLINK Ltd | Patrikeev A.P.,RPC OPTOLINK Ltd | Korkishko Y.N.,RPC OPTOLINK Ltd | Fedorov V.A.,RPC OPTOLINK Ltd | Perelyaev S.E.,Moscow Institute of Electromechanics and Automatics
Gyroscopy and Navigation | Year: 2010

Special features of a technology for seminatural development of software of strapdown inertial satellite navigation systems (SISNS) are considered. The implementation of this technology relies on modern recording equipment and provides software optimization over the actual signals and on a set of the algorithms under study. The system SINS-500 based on fiber-optic gyros is described as the object of seminatural development. The results of seminatural tests of the SINS-500 system are presented which corroborate that applying the proposed technology to create different-purpose custom designed SISNS is possible and expedient. © Pleiades Publishing, Ltd., 2010.

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