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4 January 2008 An electromagnetically actuated fiber optic switch using magnetized ferromagnetic materials
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This paper presents the design, fabrication and testing of a fiber optic switch actuated electromagnetically. The ferromagnetic gel coated optical fiber is actuated using external electromagnetic fields. The ferromagnetic gel consists of ferromagnetic powders dispersed in epoxy. The fabrication utilizes a simple cost-effective coating setup. A direct fiberto-fiber alignment eliminates the need for complementary optical parts and the displacement of fiber switches the laser coupling. The magnetic characteristics of magnetized ferromagnetic materials are performed using alternating gradient magnetometer and the magnetic hysteresis curves are measured for different ferromagnetic materials including iron, cobalt, and nickel. Optical fiber switches with various fiber lengths are actuated and their static and dynamic responses for the same volume of ferromagnetic gel are summarized. The highest displacement is 1.345 mm with an input current of 260mA. In this paper, the performance of fiber switches with various coating materials is presented.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Praveen Pandojirao-S, Naresh Dhaubanjar, Pratibha C. Phuyal, Mu Chiao, and J.-C. Chiao "An electromagnetically actuated fiber optic switch using magnetized ferromagnetic materials", Proc. SPIE 6836, MEMS/MOEMS Technologies and Applications III, 683616 (4 January 2008);


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