21 October 2004 Digital optical switches with reconfigurable output waveguide branches in InP
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Proceedings Volume 5622, 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications; (2004) https://doi.org/10.1117/12.592170
Event: 5th Iberoamerican Meeting on Optics and 8th Latin American Meeting on Optics, Lasers, and Their Applications, 2004, Porlamar, Venezuela
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.
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Pedro J. Barrios, Pedro J. Barrios, Siegfried Janz, Siegfried Janz, Andre Delage, Andre Delage, Ilya Golub, Ilya Golub, W. Ross McKinnon, W. Ross McKinnon, Philip J. Poole, Philip J. Poole, Shawkat M. Abdalla, Shawkat M. Abdalla, Dritan Celo, Dritan Celo, Sandy Ng, Sandy Ng, Tom J. Smy, Tom J. Smy, Barry A. Syrett, Barry A. Syrett, } "Digital optical switches with reconfigurable output waveguide branches in InP", 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; https://doi.org/10.1117/12.592170
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