Eyeglass-based displays are expected to become a primary visual display option for future wearable computing platforms. There has been several prototypes in the area of eyeglass-based displays. Example of previous designs include the work by Bettinger[1], Spitzer[2] and Kasai[3]. A comprehensive review of designs in the eyeglass formfactor is provided in [4]. In this paper, we explore the possi...

introduction: in this study, arrangement of a low-cost optical tomography device compared to other methods such as frequency domain diffuse tomography or time domain diffuse tomography is reported. this low-cost diffuse optical imaging technique is based on the detection of light after propagation in tissue. these detected signals are applied to predict the location of in-homogeneities inside p...

The ferroelectric modes of liquid crystals which allow for easy reorientation of the direction of polarization make liquid crystals an attractive element to use for applications such as optical storage, and optical switching. Three schemes for achieving ferroelectricity are discussed: chiral smectic alignment, achiral “banana-shaped” smectic alignment, and the nematic phase that comes from stro...

The simulation of optical wavefront decomposition on Zernike polynomials based on the multi-channel diffractive optical element (DOE) was performed. This approach is an alternative to classical wavefront sensors and may be used to determine weighted values of aberrations in the analysed wavefront in real time thus, facilitating the aberrometry analysis of the human eye optical system. An invest...

In this paper we propose a new totally optical approach to the implementation of iterative algorithms for image restoration. A phase conjugating mirror (PCM) is employed as an amplifying element to implement a coherent optical feedback system capable of performing iterative operations on a spatially modulated input beam. Three systems are suggested. Their optical analysis is performed. The obta...

A nanoparticle undergoing light-induced transformations between structural phases with different optical properties is an inheritably bistable structure and this bistability can be used to create a resonator-free optical memory element, operating at very low power levels. We experimentally demonstrate this memory functionality using a film of gallium nanoparticles, and we present a method for d...

Photonic band-gap (PBG) crystals offer new dimensions of freedom in controlling propagation of electromagnetic waves. The existence of stop-bands in the transmission characteristic of these crystals makes them a suitable element for the realization of many useful microwave and optical subsystems. In this paper, we calculate the propagation constant of a one-dimensional (1-D) photonic crystal by...

We present a novel direct space-to-time pulse shaper, operating in the 1.5m optical communications band which enables generation of continuous optical pulse sequences at a rate of 100GHz. The apparatus includes several novel features, such as the use of a diffractive optical element for spatial patterning, fiber coupled input/output, and a telescopic configuration which collectively enable gene...

Optical waveguide is the fundamental element that interconnects the various devices of an optical integrated circuit. In this paper, the propagation characteristics of ridge and buried waveguides have been investigated on light intensity distribution within the structure. The analysis has been done by varying the thickness and also the width of both ridge and buried optical waveguide. The norma...