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 18 [mm], Dia. D= [nm]
Length 20 [mm], Dia. D= 455.5[nm]

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

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