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Proceedings Paper

Photothermal optical losses characterization of channel waveguides
Author(s): Mario Bertolotti; L. Fabbri; G. L. Liakhou; Roberto Li Voti; A. Matera; Concita Sibilia; M. Valentino
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Paper Abstract

The photodeflection method applied to the propagation losses characterization in channel waveguides is discussed using two different set-up configurations. 3D and 1D models are presented in order to calculate the photodeflection angle. The effects on the measurement of set-up misalignments 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. The method has proven suitable to measure losses as low as 0.2 dB/cm.

Paper Details

Date Published: 25 August 1994
PDF: 10 pages
Proc. SPIE 2212, Linear and Nonlinear Integrated Optics, (25 August 1994); doi: 10.1117/12.185108
Show Author Affiliations
Mario Bertolotti, Univ. di Roma/Sapienza, GNEQP/CNR, and INFM (Italy)
L. Fabbri, Univ. di Roma/Sapienza, GNEQP/CNR, and INFM (Italy)
G. L. Liakhou, Polytechnical Institute of Kishinev (Moldova)
Roberto Li Voti, Univ. di Roma/Sapienza, GNEQP/CNR, and INFM (Italy)
A. Matera, Univ. di Roma/Sapienza, GNEQP/CNR, and INFM (Italy)
Concita Sibilia, Univ. di Roma/Sapienza, GNEQP/CNR, and INFM (Italy)
M. Valentino, Univ. di Roma/Sapienza, GNEQP/CNR, and INFM (Italy)


Published in SPIE Proceedings Vol. 2212:
Linear and Nonlinear Integrated Optics
Giancarlo C. Righini; David Yevick, Editor(s)

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