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Optical fibers coated with various non-magnetized ferromagnetic materials and actuated by external magnetic fields were designed and characterized to demonstrate the feasibility for remote scanning. Cobalt, iron, nickel, and samarium-cobalt powders were used to enable the actuation. Silica optical fibers were coated with a mixture of 70% enamel paint and 30% various ferromagnetic materials. The static and dynamic measurements were preformed under the remote control of an electromagnet. Experiments with different ferromagnetic materials and different suspended fiber lengths of 3.2 cm, 4.2 cm, 5.2 cm, 6.2 cm, and 7.2 cm were performed to compare with theory. The static displacements, dynamic displacements and resonant frequencies of the actuation were measured. [ABSTRACT FROM AUTHOR]

Abstract: Distributed MEMS phase shifters using CMOS-grade low-resistivity silicon have been successfully developed. Kapton films were utilized as dielectric layers to reduce RF signal attenuation in the lossy silicon substrate. The scattering parameters were evaluated from DC to 26GHz. The phase shifting reaches 43° and insertion losses are less than 1.4dB. The manufacturing process is simple and compatible with CMOS and post CMOS processes. [Copyright &y& Elsevier]