33rd IEEE Conference on Signal Processing and Communications Applications, SIU 2025, İstanbul, Türkiye, 25 - 28 Haziran 2025, (Tam Metin Bildiri)
In this study, ultra-wideband (UWB) pulses were obtained in photonic circuits with S (short, 1460-1530 nm), C (conventional, 1530-1565 nm), L (long, 1565-1625 nm) wavelength fiber transmission lines. Time and frequency analyzes of the pulses were performed. The communication circuit was evaluated for three cases. First, the photonic circuit with a fiber transmission line with S, C, L wavelengths, in the second case, a semiconductor optical amplifier (SOA) was added to the existing circuit, and in the third case, SOA and bandpass filter (BPF) were added to the existing circuit. In the first case, a UWB Gaussian double pulse was produced, and in the second and third cases, a Gaussian triple pulse was produced. Frequency analyzes for all three cases were found to be compatible with the Federal Communications Commission (FCC) mask. In the frequency analysis, the fractional bandwidth (FBW) percentage is in the S band, respectively; 168, 133, 102; 173, 136, 120 in C band; 186, 130, 123 in L Band. It was determined that the FBW values in the three bands were close to each other and relatively better values were obtained in the L band. FBW of the Double pulse obtained in Case 1 and the Triple pulse produced in Case 2; It was found to be higher than studies in the literature.