Optical interconnection at high-speed and large-capacity transmission of data has the advantage of conveying
information at large bandwidths in free space with less crosstalk than electronics. We propose here the design of
micro-optical devices based in the multi-aperture compound insect eyes that will transfer a signal as a freespace
multichannel point-to-point interconnection. These designs are inspired in the configuration of the superposition
refractive compound eye as Gabor superlens by means of the implementation of microlens arrays. In our
configuration the design equations, simulations, and optical performance are shown.
An ultrathin objective with the configuration of an artificial apposition compound eye was
designed in order to obtain a miniaturized camera. The optical design was based in a nonconventional
multi aperture configuration of a diurnal insect eye that uses ommatidia as
individual units. An aspherical cylindrical micro doublet (CMD), obtained by ALSIE, is
used in this optical design to improve the image quality in more than 200 percent in
comparison with the first design with the spherical CMD.
We present the optical design of an ultra-thin non-conventional objective lens (UTOL), based on the concept of superposition compound eye that some insects and arthropods have. One of the features of the UTOL is the capability to improve image quality by using an array of micro-tunable lens. Lens parameters, design and simulation techniques are described.
A mobile (electrostatic) flat mirror is designed to bend visible light, and can be fabricated on crystalline silicon by means
of photolithography and humid etching. Using the CoventorWareTM software we carry out a simulation of the fabrication process as well as the movement versus voltage of the mobile (electrostatic) flat mirror, which dimensions are 50
microns large by 40 microns width. The required voltage to move the flat mirror 2.17° is 38.1 V. The flatness of the
micro-mirror is enough to bend the light in the visible range.
This paper presents a study of the optical properties of amorphous hydrogenated silicon nitride (a-Si3N4:H) films under deposition temperature influence. The films were deposited by low-frequency plasma-enhanced chemical vapor deposition at temperatures of 200, 300, and 400°C and 0.6-Torr pressure. The mixture gases were silane (SiH4), ammonia (NH3), and hydrogen (H2). The optical properties of the films samples were obtained by means of the transmittance spectra and from spectroellipsometry measurements. Then, the optical parameters of the films were determined using the Swanepoel, Cauchy, and Sellmeier models. The refractive index dispersion curves were well fitted with both the Cauchy and the Sellmeier theoretical model. The equivalence between the parameters that characterize the two models is established.
Amorphous silicon germanium (a-Si1–xGex) thin films are prepared by low-frequency plasma-enhanced chemical vapor deposition (LF PECVD) on glass substrates, from SiH4+GeF4 and SiH4+GeH4. These films are deposited under capacitive discharge during 60 min, at a frequency of 110 kHz, substrate temperature of 300°C, pressure of 0.6 Torr, and power of 350 W. The germanium gas mixture composition, determined by XGe=[GeF4]([GeH4])/[SiH4]+[GeF4]([GeH4]), is varied from 0 to 1. These films are deposited from a (1–XGe)SiH4+(XGe)GeF4(GeH4) mixture, with H2 dilution. The refractive index n and absorption coefficient are determined from transmission spectra. The optical energy gap is also determined. The influence of gas sources on the optical parameters is discussed.
We shown the designs of optical collimators for wave length of 1.5 µm. The design is based in the Galilean Telescope formed with two kinds of lenses a convergent and a divergent. This design is a silicon negative microlens of 300 µm and of diameter and the positive lenses are discussing between several different materials of 6 mm of diameter, it is to determinate the best performance of the optical setup type Galilean telescope, the parameters of aberration and deviation rms. y p-v, we help to obtain the best system comparing the quantitative results that in this case was LaF3.
In this work we present some results obtained on the design and fabrication of Schottky barrier photodetector. The derive is suitable for operation in the IR zone of the electromagnetic spectrum. This device is fabricated by using a Silicon-Germanium amorphous alloy on p-type crystalline silicon. The device operates in the range 1.0-4.5 micrometers . Also we present some optical design for applications in the device operation range wavelength.
The ALSIE (Automatic Lens Design By Solving Inequalities, T. Suzuki, et al., J. Opt. Soc. Am., 56, 677, 1966) algorithm is a powerful lens design procedure for the optimization of conventional and unconventional lens systems. However, a problem of the ALSIE algorithm is the selection of an adequate set of boundaries to the performance functions. In this work a procedure of selecting the boundaries is discussed. It is experimentally found, by designing a doublet lens to be used in a multiple imaging lens system, that the selected boundaries dealt to a faster convergence than with the original selection of boundaries.
Reflective block optical systems have been used to achieve tasks realized by lens systems, but offering compactness and flexibility to construct optical computing systems. Thus, the reflective optical systems have to achieve optimal optical performance. In this work, we use the procedure of ALSIE (Automatic Lens Design By Solving Inequalities, T. Suzuki, et al., J. Opt. Soc. Am., 56, 677, 1966) to optimize reflective optical systems. To realize the optimization some specific considerations are discussed. The spherical aberration of a reflective optical system is optimized by the present method, showing the optimal optical performance.
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