Browsing by Keywords "Chirp"
Now showing items 1-5 of 5
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All-fiber all-normal-dispersion femtosecond laser with nonlinear multimodal interference-based saturable absorber
(Institute of Electrical and Electronics Engineers Inc., 2019)Chong et al. demonstrated a stable passively mode-locked all-normal-dispersion fiber laser and pulse generation is attributed to the strong spectral filtering of chirped pulses, dissipative soliton pulses [1]. In the ... -
Effect of fractional Fourier transformation on time-frequency distributions belonging to the Cohen class
(Institute of Electrical and Electronics Engineers, 1996-02)We consider the Cohen (1989) class of time-frequency distributions, which can be obtained from the Wigner distribution by convolving it with a kernel characterizing that distribution. We show that the time-frequency ... -
Optical implementations of two-dimensional fractional Fourier transforms and linear canonical transforms with arbitrary parameters
(Optical Society of America, 1998-04-10)We provide a general treatment of optical two-dimensional fractional Fourier transforming systems. We not only allow the fractional Fourier transform orders to be specified independently for the two dimensions but also ... -
Optimal filtering in fractional Fourier domains
(Institute of Electrical and Electronics Engineers, 1997-05)For time-invariant degradation models and stationary signals and noise, the classical Fourier domain Wiener filter, which can be implemented in O(N log N) time, gives the minimum mean-square-error estimate of the original ... -
Some mathematical properties of the uniformly sampled quadratic phase function and associated issues in digital Fresnel diffraction simulations
(SPIE - International Society for Optical Engineering, 2004)The quadratic phase function is fundamental in describing and computing wave-propagation-related phenomena under the Fresnel approximation; it is also frequently used in many signal processing algorithms. This function has ...
