Femtosecond laser inscription of diffractive element in optical fiber end-face
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AuthorPallarés Aldeiturriaga, David; Rodríguez Cobo, Luis; Ruiz Lombera, Rubén; Quintela Incera, Antonio; López Higuera, José Miguel
In this work, the potential of femtosecond laser for optical fiber end-face inscription is highlighted by presenting a reliable setup for optical fiber longitudinal writing. This set-up has been used to write 1 dimension diffraction grating at the fiber end-face. Its far field intensity distribution has been measured and compared with simulations assuming rectangular air hole structure of same width and period. By comparing diffraction efficiencies, a first attempt of measuring hole deep is achieved.