We propose and demonstrate a high-performance wavelength-switchable erbium-doped fiber laser (EDFL), enabled by figure-8 compound-ring-cavity (F8-CRC) filter for single-longitudinal-mode (SLM) selection polarization-managed four-channel (PM-FCF) defining four lasing wavelengths. introduce novel methodology utilizing signal-flow graph combined with Mason’s rule to analyze CRC in general apply it...

which has the following property Fc(f ∗ g)(x) = (Fcf)(x)(Fcg)(x). (3) The theory of integral transforms related to the Fourier and Mellin convolutions is well developed [2, 6, 10, 11, 12, 13, 19] and has many applications. Some other classes of integral transforms, that are not related to any known convolutions, are considered in [14, 15]. In this paper we investigate integral transforms of the...

Abstract The purpose of this study was to evaluate the effects furrow fertigation on nitrate deep leaching, runoff losses, and plant nitrogen supply in various growth stages maize ( Zea mays L.). Furrow experiment conducted 120 (W1), 100 (W2), 80 (W3), 60% (W4) levels required water (560 mm) (N1), (N2), 60 (N3), 0% (N4) fertilizer (184 kg N ha −1 ). N-fertilizer applied four split applications ...