SECONDMENT

Germany_Canada

TAILORING THE SPECTRAL AND DISPERSIVE PROPERTIES OF FEMTOSECOND LASER INSCRIBED FIBER BRAGG GRATINGS

FROM : FRIEDRICH SCHILLER UNIVERSITY JENA (GERMANY) TO : UNIVERSITÉ LAVAL (QUÉBEC)

FROM : 13 FEBRUARY 2022 TO :  23 MAY 2022

Involved Work Packages :

WP3

WP4

RESEARCHER

Timothy IMOGORE

PhD student
Friedrich Schiller University Jena (ACP)

OBJECTIVES

Tailoring the spectral and dispersive properties of femtosecond laser inscribed fiber Bragg gratings (FBGs) in ZBLAN fibers by femtosecond laser post-processing.

TASKS

  • Evaluate the evolution of the DC averaged refractive index change with respect to laser post-processing parameters by tuning the wavelength of an already inscribed FBG, which will be helpful in predicting the possible change in the dispersion properties of CFBGs.
  • Realize nonlinearly chirped-FBGs (CFBGs) from linearly CFBGs by post-processing.
  • Evaluate the effects of the fs post processing on dispersion coefficients of CFBGs integrated in a laser system by directly measuring the temporal characteristics of a laser pulse.
  • Evaluate the evolution of the dispersion coefficients from the changes to the pulse temporal profile.

RESULTS