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Proceedings Paper

Recent advances in bubble-actuated photonic cross-connect switches
Author(s): Shalini Venkatesh; Jin-Woo Son; Julie E. Fouquet; Richard E. Haven; Dale Schroeder; Hua Guo; Wan Yu Wang; Paul Russell; Alan Chow; Peter F. Hoffman
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Paper Abstract

Agilent Technologies' approach to photonic cross-connect switching combines a silica-based planar lightwave circuit chip with a silicon-based actuator chip. The former contains two intersecting arrays of waveguides, with trenches etched into each crosspoint. The latter contains a matching pattern of electrically addressed resistive elements, and the two chips are hermetically sealed together. In the default state, the trenches, along with the rest of the sealed space between the two chips, are filled with a liquid whose index matches the waveguides. Optical signals passing along any guide simply pass on through. However, by activating a resistive element, a bubble can be created at that crosspoint, so that total internal reflection occurs at the side wall of the corresponding trench, and switching is achieved. Recent performance data of prototype 32x32 optical switches, including insertion loss, polarization dependent loss, switching time, and vibration sensitivity will be presented. Some of the intrinsic advantages of our technology will be discussed. One example is the built-in alignment of the waveguides and the trench walls at which switching occurs, which means that no optical realignments are necessary during operation. Another example is the potential for very low crosstalk, characteristic of the underlying phenomenon of total internal reflection.

Paper Details

Date Published: 27 March 2002
PDF: 9 pages
Proc. SPIE 4654, Silicon-based and Hybrid Optoelectronics IV, (27 March 2002); doi: 10.1117/12.463854
Show Author Affiliations
Shalini Venkatesh, Agilent Technologies, Inc. (United States)
Jin-Woo Son, Agilent Technologies, Inc. (United States)
Julie E. Fouquet, Agilent Technologies, Inc. (United States)
Richard E. Haven, Agilent Technologies, Inc. (United States)
Dale Schroeder, Agilent Technologies, Inc. (United States)
Hua Guo, Agilent Technologies, Inc. (United States)
Wan Yu Wang, Agilent Technologies, Inc. (United States)
Paul Russell, Agilent Technologies, Inc. (United States)
Alan Chow, Agilent Technologies, Inc. (United States)
Peter F. Hoffman, Agilent Technologies, Inc. (Germany)

Published in SPIE Proceedings Vol. 4654:
Silicon-based and Hybrid Optoelectronics IV
David J. Robbins; Ghassan E. Jabbour, Editor(s)

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