The narrow one is observed at a shorter wavelength. However, such an innovation did not increase the sensor sensitivity. It is only possible to increase the reliability of fixing the values of the angles or wavelengths at which the reflection coefficient minima are observed. Abstract: We compare ultra-low-loss silica waveguides with PECVD SiO2, borophosphosilicate glass (BPSG), and wafer-bonded thermal oxide upper claddings. Introduction In. In addition to sensors based on planar waveguides, a number of sensors based on optical fibers have been proposed [1, 10, 11, 12, 13]. Sensors based on an optical fiber in which the side is polished are. Common types of optical waveguides include optical fiber waveguides, transparent dielectric waveguides made of plastic and glass, liquid light guides, and liquid waveguides. Optical waveguides are used as components in integrated optical circuits or as the transmission medium in local and long-haul. Abstract The paper reviews progress and future prospects of two kinds of planar waveguide devices; they are (a) silica and silicon photonics multi/demultiplexers for communications and signal-processing applications, and (b) a novel waveguide spectrometer based on Fourier transform spectroscopy for. This book provides a comprehensive description of various slab waveguide structures ranged from graded-index waveguide to symmetrical metal-cladding waveguide. In this book, the transfer Matrix method is developed and applied to analyze the simplest case and the complex generalizations. A novel. We describe four waveguide technologies in detail: high-performance silica-based planar lightwave circuit (PLC) technology, novel low loss silicon nitride (SiN) waveguide technology, plasmon waveguide technology that enables the fusion of electronic and optical devices, and three-dimensional.