Optical losses characterization in channel waveguide through the photodeflection method M. Bertolotti, G. Liakhou, R. Li Voti, A. Matera, C. Sibilia and M. Valentino J. Phys. IV France, 04 C7 (1994) C7-647-C7-650 DOI: 10.1051/jp4:19947153