A.A. Oliner

Bio: A.A. Oliner is an academic researcher. The author has contributed to research in topics: Surface acoustic wave. The author has an hindex of 1, co-authored 1 publications receiving 4 citations.

Acoustic Surface Waveguides and Comparisons with Optical Waveguides

Abstract: An overview is presented first of the various types of waveguides for acoustic surface waves which have been studied theoretically and experimentally. Many of these waveguides resemble certain waveguiding structures proposed recently for use in integrated and fiber optics. The similarities and differences between corresponding waveguiding structures in the two different fields are then discussed from the standpoints of their properties and their mechanisms of operation.

Waveguide modeling and design system

Abstract: This invention provides a method for designing a waveguide profile based upon predicted performance measurements of the waveguide. The method involves establishing a design metric, such as the change in acoustic reactance along the transition of the waveguide. Initial values may then assigned for the radius or diameter of the throat of the waveguide as well as values for the initial slope of the waveguide along the major and minor (or x and y) axis and the depth of the waveguide. The waveguide may then be divided into two or more sections. The values of the slopes for each section are then altered based upon the design metric. When using the change of acoustic reactance as the design metric, the slope of each section of the waveguide is adjusted to minimize the change in acoustic reactance between the sections, which is the desired performance standard. Once the slopes of each section are adjusted to achieve minimal change in acoustic reactance, the sections are concatenated together and the curve is smoothed using a polynomial function order curve fit to create a waveguide profile. This profile correlates with the design measurements, which allows for the prediction of the performance standards and/or dispersion characteristics of the waveguide. This allows for design iterations to be made to the waveguide to adjust for performance measurements without building a prototype.

Waveguides for Integrated Optics Formed by Metal Platings

Abstract: Theoretical analyses and performance results are presented for two waveguides for integrated optics which are formed by metal platings, employing structures similar to those in some modulators or switches. One structure is a slot waveguide, formed by a slot or gap of unplated film on a substrate between two plated regions, for which previous analyses are incorrect for one polarization. The correct analysis shows that for that polarization the modes are leaky and that propagation occurs over a wider frequency range than expected. The other structure is a new one consisting simply of a strip of metal plated on a film on a substrate. Waveguiding with low loss is possible under appropriate conditions because metals at optical frequencies behave as overdense plasmas.

Towards dispersion characteristics for a new unconventional metal‐clad optical waveguide

Abstract: Using Goell's point matching method under weak guidance condition, the modal characteristic equations of a curvilinear triangular cored optical waveguide are obtained in three cases. In one case the proposed waveguide has on its one side a conducting material and other two sides are bounded by dielectric material. We describe it as dielectric-dielectric-metal (DDM) waveguide. In other case we consider both the boundaries conducting. We call this as metal-metal-dielectric (MMD) waveguide. Finally, we consider all the boundaries conducting. We call this as a metal-metal-metal (MMM) waveguide. Results obtained in all three cases are compared. It is found that for a given V-value the DDM waveguide will support more modes than MMD and MMM waveguides. Therefore, the MMD or MMM waveguides may be used as a mode filter. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2709–2713, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22854