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3 Optica Applicata

3 2004

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Sol-gel derived optical waveguide films for planar sensors with phase modulation

Karasiński P.

Optica Applicata

2004

Vol. 34, nr 4

467-475

The paper presents the results of investigation of the technology of optical waveguide films produced with the sol-gel technique. The silica-titania films were deposited on glass substrates by a deep coating method. The influence of with drawal speed and aging time of sol on the refractive index and film thickness has been tested.

Refractive index profiles of planar waveguides produced in electrodiffusion processes

Rogoziński R.

Optica Applicata

2004

Vol. 34, nr 4

490-505

The paper presents the results of investigation which demonstrate the possibilities to shape refractive index profiles of planar waveguides produced in glass using the ion exchange technique with the application of electrodiffusion processes with the change of direction of electric field polarization. We also attempted to determine equilibrium concetration of mobile glass ions based on the value of electric charge passing through glass in the electrodiffusion process.

Bragg's grating coupler in planar optical sol-gel waveguides

Pustelny T., Zielonka I., Karasiński P., Jurusik J.

Optica Applicata

2004

Vol. 34, nr 4

477-487

The aim of investigation was to develop a technique of producing Bragg's grating couplers on planar waveguides obtained by means of the sol-gel technique. Introducting a light beam into the waveguide structure is in the case of planar optical systems always an essential technological problem, requiring simple and reproducible solutions without extending the waveguide structure too much. The paper deals with the technology of producing grating couplers by impressing the pattern of the network while forming the planar waveguide structure applying the sol-gel method. the results of investigation on grating couplers obtained in such a way have also been presented. Attention has been drawn to the possibility of using such structures in optoelectronic sensors, particulary gas sensors, including sensors of toxic gases.