WebPeriodically segmented waveguides with periods of few tens of micrometers and nonconnected segments are studied experimentally in Ti:LiNbO3. The near-field patterns were found to expand with decreasing duty cycle but to be independent of the segmentation period. The measured segmentation losses vary between 0.5 and 2.5 dB/cm, depending … WebIt is found that the model predicting the index averaging effect of periodically segmented waveguides… Voir plus The realisation and characterisation of periodic segmented waveguides made by Ag+/Na+ ion-exchange on glass is presented. In particular, the averaging effects provided by the segmentation are analysed using the measurement of …
Modes of Periodically Segmented Waveguides
WebPeriodically segmented planar waveguides are modeled by using the rigorous modal method of diffraction gratings. The radiation loss, effective index, and electric-field … WebModal properties of periodically segmented waveguides (PSWs) are analyzed by using the beam-propagation method and coupled-mode theory. The modal effective indices in a PSW are shown to be equal to those of a continuous waveguide with an averaged Delta n. As a result, guided modes spread out, particularly those that are not strongly guided. The … pdfs not opening in chrome
Linear propagation characteristics of periodically …
WebAbstract: Periodically segmented waveguide (PSW) mode expanders can be realized simply, using a single step lithography. In this paper such devices are studied numerically, with respect to high-/spl Delta/ silica waveguides and InP strip waveguides. Web1.5 Segmented waveguides. 1.5.1 The segmented waveguide structure 18 1.5.2 Analysis of segmented waveguide properties 18 1.5.3 Linear optical properties of periodically segmented waveguide 20 1.5.4 Quasi phase matching in segmented waveguides applied on KTP crystal.. 21 1.6 Goals and overview of this dissertation 22 WebOct 1, 2014 · The technique is based on replacing the wider arm by a periodically segmented waveguide (PSW) to reduce its apparent index difference [3]. These waveguides consist of a periodic modulation in the refractive index, along the direction of propagation. Each period of the PSW is composed of two regions with different refractive indices: a … pdfs not previewing in file explorer