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Proceedings Paper

Digital optical switches with reconfigurable output waveguide branches in InP
Author(s): Pedro J. Barrios; Siegfried Janz; Andre Delage; Ilya Golub; W. Ross McKinnon; Philip J. Poole; Shawkat M. Abdalla; Dritan Celo; Sandy Ng; Tom J. Smy; Barry A. Syrett
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Paper Abstract

A compact Y-junction waveguide switch with electrically reconfigurable output waveguide arms is demonstrated in InGaAsP/InP. Simulations indicate that the plasma effect or the thermo-optic effect can be used as the active switching mechanism, as corroborated by experimental tests. For the plasma effect the induced index change under the electrode, Δn, is negative. The Y-junction device has a measured switch contrast ratio ~ 20 dB, with a response time of ~ 5 ns. Using the thermo-optic effect Δn is positive and the observed contrast ratio is better than 10 dB. The highly localized nature of the thermal gradient in these devices yields thermo-optic switching into the hundred of nanoseconds range, several orders of magnitude faster than the overall thermal response time. This is the fastest thermo-optic switch reported to date. Fabrication of these switches, and in particular the use of O+-ion implantation to provide electrical isolation of the waveguide branches, is described.

Paper Details

Date Published: 21 October 2004
PDF: 4 pages
Proc. SPIE 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, (21 October 2004); doi: 10.1117/12.592170
Show Author Affiliations
Pedro J. Barrios, National Research Council Canada (Canada)
Siegfried Janz, National Research Council Canada (Canada)
Andre Delage, National Research Council Canada (Canada)
Ilya Golub, National Research Council Canada (Canada)
W. Ross McKinnon, National Research Council Canada (Canada)
Philip J. Poole, National Research Council Canada (Canada)
Shawkat M. Abdalla, Carleton Univ. (Canada)
Dritan Celo, Carleton Univ. (Canada)
Sandy Ng, Carleton Univ. (Canada)
Tom J. Smy, Carleton Univ. (Canada)
Barry A. Syrett, Carleton Univ. (Canada)

Published in SPIE Proceedings Vol. 5622:
5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications
Aristides Marcano O.; Jose Luis Paz, Editor(s)

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