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Proceedings Article

Tunable coupling ratio for optical switch application

[+] Author Affiliations
. Saktioto

Univ. Teknologi Malaysia (Malaysia) and Univ. of Riau (Indonesia)

Nor Faridah Hanim, M. Fadhali, Jalil Ali

Univ. Teknologi Malaysia (Malaysia)

Preecha Yupapin

King Mongkut's Institute of Technology Ladkrabang (Thailand)

Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752252 (April 14, 2010); doi:10.1117/12.848918
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From Conference Volume 7522

  • Fourth International Conference on Experimental Mechanics
  • Chenggen Quan; Kemao Qian; Anand K. Asundi; Fook S. Chau
  • Singapore, Singapore | November 18, 2009

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.

© (2009) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

. Saktioto ; Nor Faridah Hanim ; M. Fadhali ; Preecha Yupapin and Jalil Ali
"Tunable coupling ratio for optical switch application", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 752252 (April 14, 2010); doi:10.1117/12.848918; http://dx.doi.org/10.1117/12.848918


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