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Fiber Optic Communication Lines

#1047


Development of Methods and Facilities for Spectral Division Multiplexing in Fiber Optic Communication Lines and Local Nets

Tech Area / Field

  • INF-ELE/Microelectronics and Optoelectronics/Information and Communications

Status
3 Approved without Funding

Registration date
25.07.1997

Leading Institute
Science and Production Center "State Institute of Applied Optics", Russia, Tatarstan, Kazan

Supporting institutes

  • NTP "Integros", Russia, Tatarstan, Kazan

Collaborators

  • University of Central Florida, USA, FL, Orlando\nHeinrich Heine Universität Düsseldorf / Institut für Physik der Kondensierten Materie, Germany, Düsseldorf

Project summary

Project Goals

The project's goal consists in conversion of theoretical and technological achievements, obtained in Science Production Association "State Institute of" Applied Optics" for military purposes in the sphere of calculation and practical realization of complicated and highly effective diffraction systems (including power one), with the aim of their using in the systems of civil destination, particularly to get multichannel spectral multi-demultiplexers C'MDP) for fiber-optic communication lines and, possibly also, for fiber-optic systems of other destination - biomedical, ecology etc.

Technical Approach and Methodology

Spectral multiplication of signal streams transmitting by fiber-optic communication lines is the most efficient facility to rise their transmittance and reliability. The optimal solution for MDP realization is to use nonclassical diffraction grating fulfilling functions of focusing, dispersive and collimating elements in unit monoblock construction.

It is possible to get the necessary exploitation characteristics (spectral channel width and insertion losses) of multiplexing devices only by the use of ruled gratings. The additional lowering of losses is possible with the use of interference coatings at the elements of device. The price lowering is provided by application of replicating technology when fabricating dispersive elements.

Expected Results

The following problems must be solved under the project realization:


- development of methods for calculation of nonclassical diffraction gratings with minimized aberrations;
- development of technologic processes for fabrication of small size focusing gratings with large relative hole;
- development of methodology for precision mounting of fiber-optic devices.

These technical solutions can find application also in other spheres - under the realization of robust power resisting spectral devices for science and ecological control.

The model samples of fiber-optic nets using developed multi-demultiplexers will be realized.

Potential Role of Foreign Partners

We offer to foreign partners to use results obtained under the project, participation in investigations.

We are ready to accept the help in development of scheme solutions for fiber optic communication lines; we will accept methodological help and suggestions on collaboration when developing and fabricating radiation sources for fiber optic communication lines with spectral multiplexing.

We are ready to develop and fabricate mutually, also, other optical devices and setups that need robust dispersive elements with large power resistivity and resolution.


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