8 ITMP3 / 8éme conférence internationale de photoacoustique et photothermique
J. Phys. IV France 04 (1994) C7-647-C7-650
Optical losses characterization in channel waveguide through the photodeflection methodM. Bertolotti1, G. Liakhou2, R. Li Voti1, A. Matera1, C. Sibilia1 and M. Valentino1
1 Dipartimento di Energetica, Università di Roma "La Sapienza", Via Scarpa 16, 00161 Roma, Italy
2 Technical University of Moldova, Shtephan Cel Mare, 277012 Kishinev, Moldova
The photodeflection method applied to the propagation losses characterization in channel waveguides is discussed using two different set-up configurations. 3-D and 1-D models are presented in order to calculate the photodeflection angle. The effects on the measurement of any set-up misalignment are studied. Different ways for determining the propagation losses are shown. Comparison between theoretical and experimental results for Ti : LiNbO3 and a glass channel waveguide is also reported.
© EDP Sciences 1994