Abstract
We present a numerical model for micro-scale particle trapping and transverse harmonic oscillation, for a twin-tweezers, based on the use of four-core fiber (FCF). The optical fiber tweezers is realized by appropriately shaping the fiber facet into a truncated diamond pyramid. The proposed FCF forms a dual optical tweezers, which are symmetrical with respect to the fiber’s central axis. The trapping forces and the oscillation frequency of particle are calculated in a range of different motion processes. Simulated results show that the dual optical tweezers based on the FCF can be treated as a particle oscillator which could be used in the applications of fiber sensing, biomedicine, and other bio-related fields.
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