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Two-core single mode optical fiber as optical tweezers

A novel two-core optical fiber probe is proposed and fabricated by grinding method. The distribution of the optical field emerging from the probe was simulated using BPM method. With the probe, a single fiber optic tweezers system was constructed and successfully used to trap and rotate microscopic particles. The structure of this system is simple and compact. With the merit of easily controlling and adjusting, this novel system can adapt to the optical micromanipulation need of more biological cells and molecular.