Transverse writing of three-dimensional tubular optical waveguides in glass with slit-shaped femtosecond laser beams

2016/02/04 by Yang Liao, Liao, Yang, Jia Qi +11
Engineering · #Advanced Surface Polishing Techniques #FOS: Physical sciences #Laser Material Processing Techniques #Nonlinear Optical Materials Studies #Optics (physics.optics)

paper · pdf · doi:10.48550/arxiv.1602.01570

openalex publication_date 2016/02/04 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28

Abstract

We report on fabrication of tubular optical waveguides buried in ZBLAN glass based on transverse femtosecond laser direct writing. Irradiation in ZBLAN with focused femtosecond laser pulses leads to decrease of refractive index in the modified region. Tubular optical waveguides of variable mode areas are fabricated by forming the four sides of the cladding with slit-shaped femtosecond laser pulses, ensuring single mode waveguiding with a mode field dimension as small as ~ 4 μm.

Citations

• Femtosecond filamentation in transparent media

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