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Fabrication of micro/nano fiber by using focused high-repetition-rate CO 2 laser pulses

This study aims to optimize the fabrication method of micro/nanofibers using focused high-repetition-rate CO2 laser pulses and explore new applications. Experimental results and measuring with AFM show fiber lengthening and diameter changes pre- and post-laser exposure. The potential applications include Fiber Bragg gratings, LPGs, and chiral gratings in nano/micro fibers.

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Fabrication of micro/nano fiber by using focused high-repetition-rate CO 2 laser pulses

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  1. Fabrication of micro/nano fiber by using focused high-repetition-rate CO2 laser pulses

  2. Optical micro/nanofiber and its application Definition: Fiber waveguides with a submicrometric diameter are referred as optical fiber nanowires (or photonic nanowires): OFN. Those ones with diameter bigger than 1 μm are referred to optical fiber microwires (OFMs)

  3. Purpose of this study • Optimize the fabrication approach for micro/nano fiber by using focused high-repetition-rate CO2 laser pulses • Explore the new applications of the micro/nano fiber • (For examples: Fiber Bragg gratings formed in a nano-fiber • LPGs formed in a nano-fiber • Chiral grating formed in nano/micro fiber)

  4. Experimental setup

  5. Experimental results Before the Laser exposure After the laser exposure and the fiber pulling process

  6. Measuring results by using AFM Length 20 [mm], Dia. D= 455.5[nm] Length 18 [mm], Dia. D= 534.4 [nm]

  7. Transmit spectrum (1) The fiber is lengthened about 1 mm The fiber is lengthened about 5 mm

  8. Transmit spectrum (2) The fiber is lengthened about 10 mm

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