Journal
APPLIED PHYSICS LETTERS
Volume 92, Issue 25, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2951621
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This letter presents the thermo-optic switching characteristics of an optical double-well structure, which has a high-low-high-low-high refractive index construct formed by micromachined silicon prisms and air gaps. Analysis shows such structure features full transmission (i.e., on state) and requires low refractive index change for switching function. The device is fabricated on silicon-on-isolator wafer using deep etching process. In experiment, it measures a switching speed of 1 mu s and an extinction ratio of 30 dB. Compared with the other micromachined switches, this device utilizes different physical principle and processes various merits such as fast switching speed and low power consumption. (C) 2008 American Institute of Physics.
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