Patent
Varying refractive index optical medium using at least two materials with thicknesses less than a wavelength
Yan Zhou,Seng-Tiong Ho +1 more
TLDR
In this article, a graded effective refractive index is provided by varying the relative thicknesses of the two materials in the local region of the optical medium, where the thickness of the layers of at least one of the materials is substantially less than the effective light wavelength of interest.Abstract:
An optical medium has a graded effective refractive index with a high maximum refractive index change. The medium is formed using alternating layers of two or more materials having significantly different refractive indices. The thickness of the layers of at least one of the materials is substantially less than the effective light wavelength of interest. The effective index of refraction in a local region within the medium depends on the ratio of the average volumes of the two materials in the local region. A graded index of refraction is provided by varying the relative thicknesses of the two materials.read more
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Patent
Low-color scratch-resistant articles with a multilayer optical film
TL;DR: In this paper, the authors describe scratch-resistance and improved optical properties of scratch-resistant articles with a color shift of 2 or less when viewed at an incident illumination angle in the range from about 0 degrees to about 60 degrees from normal under an illuminant.
Patent
Electronic-integration compatible photonic integrated circuit and method for fabricating electronic-integration compatible photonic integrated circuit
Seng-Tiong Ho,Yingyan Huang +1 more
TL;DR: In this article, an electronic-integration compatible photonic integrated circuit (EIC-PIC) for achieving high-performance computing and signal processing is provided, which comprises a plurality of electronic and photonic circuit structures and is integrated by a process referred to as monolithic integration.
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Photonic via waveguide for pixel arrays
TL;DR: In this article, a hole between the near surface of photonic active devices and the top of a metallization stack is filled with a dielectric having embedded metal films, in which the embedded metal thin films are connected to a planar perforated metal film formed on top of the metallisation stack.
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Optical beam transformer module for light coupling between a fiber array and a photonic chip and the method of making the same
TL;DR: In this paper, an optical module includes a substrate assembly including a photonic chip mounting region, and a groove extending towards the photonic-chip mounting region where a waveguide is disposed within the groove.
Patent
Durable and scratch-resistant anti-reflective articles
TL;DR: In this paper, the authors describe a durable, anti-reflective article that includes a substrate and an optical coating disposed on the major surface of the article, and the article exhibits an angular color shift of about 5 or less at all angles from normal incidence to an incident illumination angle that is 20 degrees or greater.
References
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Patent
High index-contrast fiber waveguides and applications
TL;DR: In this article, materials for forming high index-contrast fiber waveguides, and applications of high index contrast fiber waveguide are disclosed, as well as applications of such waveguiders.
Patent
Single in-line optical package
TL;DR: In this article, an optical packaging arrangement is disclosed which utilizes silicon technology and overmolding techniques to provide a single in-line package with completely passive alignment between the various optical components.
Patent
Tapered fiber laser
TL;DR: In this article, a tapered fiber laser with a multi-mode section, a single-mode and a fundamental mode matching junction is proposed for waveguides with ytterbium or neodymium ions.
Patent
Integrated planar composite coupling structures for bi-directional light beam transformation between a small mode size waveguide and a large mode size waveguide
Yan Zhou,Seng-Tiong Ho +1 more
TL;DR: In this article, composite optical waveguide structures or mode transformers and their methods of fabrication and integration are disclosed, wherein the structures or modes transformers are capable of bi-directional light beam transformation between a small mode size waveguide and a large mode size Waveguide, where a significant portion of the energy of a light beam penetrates into the cladding layers surrounding the taper structure.
Patent
Resonantly coupled waveguides using a taper
TL;DR: In this article, the phase matching condition for the waveguide is met within the coupling length of a resonant coupler with a coupling region having first and second ends, a coupling length, and a tapered variable width.