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Proceedings Paper

Tunable coupling ratio for optical switch application
Author(s): . Saktioto; Nor Faridah Hanim; M. Fadhali; Preecha Yupapin; Jalil Ali
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Paper Abstract

This paper describes the breakdown voltage of SiO2 fiber using Pockel's effect and empirical equation. The model is evaluated by coupling coefficient and refractive index changes. A 1x2 single-mode directional coupler switch has been fabricated. A large electro-optic effect causes a change in the optical properties when a slowly varying electric field is applied. A model to describe the breakdown voltage for driving the optical switch of the fusion SiO2 fiber coupler has been developed. A voltage is applied through sectioned electrodes along the coupling length. This model uses the coupling coefficient and the changes in the refractive index to describe the optical switching. The change of refractive index due to the linear electro-optic Pockel effect and an empirical equation are used to calculate the value of coupling coefficient. The result shows that the changes of the refractive index increases exponentially as a function of separation fiber axis from 5 to 8 μm. The breakdown voltage and refractive indices difference depict a linear relationship. The increment of coupling coefficient shows that the value of voltage is reduced.

Paper Details

Date Published: 14 April 2010
PDF: 8 pages
Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752252 (14 April 2010); doi: 10.1117/12.848918
Show Author Affiliations
. Saktioto, Univ. Teknologi Malaysia (Malaysia)
Univ. of Riau (Indonesia)
Nor Faridah Hanim, Univ. Teknologi Malaysia (Malaysia)
M. Fadhali, Univ. Teknologi Malaysia (Malaysia)
Preecha Yupapin, King Mongkut's Institute of Technology Ladkrabang (Thailand)
Jalil Ali, Univ. Teknologi Malaysia (Malaysia)

Published in SPIE Proceedings Vol. 7522:
Fourth International Conference on Experimental Mechanics
Chenggen Quan; Kemao Qian; Anand Krishna Asundi; Fook Siong Chau, Editor(s)

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