We present what is to our knowledge the first experimental observation by fluorescent visualization, of the evolution of the mode field profile in a periodically segmented waveguide. The experimental observations are then compared with the numerical results obtained by a finite-difference beam propagation method. Good agreement between experimental and numerical results is observed.
© 1999 Optical Society of America
Pierre Aschiéri, Vipul Rastogi, Loic Chanvillard, Pascal Baldi, Marc P. De Micheli, Daniel B. Ostrowsky, Gaetano Bellanca, Paolo Bassi, Krishna Thyagarajan, and Mangalpady R. Shenoy, "Experimental Observation of Longitudinal Modulation of Mode Fields in Periodically Segmented Waveguides," Appl. Opt. 38, 5734-5737 (1999)