Comparison between finite-difference time-domain calculation with all parameters of Sellmeier's fitting equation and experimental results for slightly chirped 12-fs laser pulse propagation in a silica fiber

• DOI: 10.1109/jlt.2004.838873
• Publication Date: 2005-03-07T18:32:05Z
• Authors: S. Nakamura; N. Takasawa; Y. Koyamada
• Keywords: Beam propagation method; Perfectly Matched Layer

Conventionally, the beam-propagation method for solving generalized nonlinear Schro/spl uml/dinger equation, including slowly varying envelope approximation, has been used to describe ultrashort-laser-pulse propagation in an optical fiber. However, if pulse duration approaches cycle regime (<10 fs), this approximation becomes invalid. Then, it necessary use finite-difference time-domain (FDTD) Maxwell equation with least approximation. In order both experimentally and numerically investigate femtosecond ultra-broad-band-pulse a silica fiber, FDTD calculation of Maxwell's equations extended terms that all exact Sellmeier-fitting values. The results are compared experimental very short (12-fs) chirped laser fiber output compressed 7 fs by simulation group-delay compensation was obtained under assumption using spatial light modulator. To authors' knowledge, is first comparison between