Embodiments of this disclosure pertain to articles that exhibit scratch-resistance and improved optical properties. In some examples, the article exhibits a color shift of about 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. In one or more embodiments, the articles include a substrate, and an optical film disposed on the substrate. The optical film includes a scratch-resistant layer and an optical interference layer. The optical interference layer may include one or more sub-layers that exhibit different refractive indices. In one example, the optical interference layer includes a first low refractive index sub-layer and a second a second high refractive index sub-layer. In some instances, the optical interference layer may include a third sub-layer.

Low-color scratch-resistant articles with a multilayer optical film

An electronic-integration compatible photonic integrated circuit (EIC-PIC) for achieving high-performance computing and signal processing is provided. The electronic-integration compatible photonic integrated circuit comprises a plurality of electronic circuit structures and a plurality of photonic circuit structures. The electronic and photonic circuit structures are integrated by a process referred to as monolithic integration. An electronic circuit structure includes one or more electronic devices and a photonic circuit structure includes one or more photonic devices. The integration steps of electronic and photonic devices are further inserted into standard CMOS process. The photonic circuit structures and the electronic circuit structures are integrated to form the electronic-integration compatible photonic integrated circuit device.

Electronic-integration compatible photonic integrated circuit and method for fabricating electronic-integration compatible photonic integrated circuit

Photonic passive structure to couple and guide light between photonic active devices (101), such as photo-diodes, light emitting devices and light-valves, which may be arranged into 2D arrays, and the top of the metallization layer stack (110,111,112) interconnecting said devices, with said photonic passive structure comprising a hole (116) between the near surface of said photonic active Ndevices and the top of said metallization stack, said hole being filled with a dielectric (113) having embedded metal films (117) and in which the embedded metal thin films are connected to a planar perforated metal film (123,124) formed on top of the metallization stack

Photonic via waveguide for pixel arrays

Optical modules and methods for making optical modules are described. In one embodiment, an optical module includes a substrate assembly including a photonic chip mounting region, and a groove extending towards the photonic chip mounting region. A waveguide is disposed within the groove. A plurality of spacers is on the chip mounting region, each spacer having a predetermined height. A photonic chip is placed on the plurality of spacers and above the chip mounting region, and an optical coupler is between the photonic chip and the waveguide.

Optical beam transformer module for light coupling between a fiber array and a photonic chip and the method of making the same

Embodiments of durable, anti-reflective articles are described. In one or more embodiments, the article includes a substrate and an optical coating disposed on the major surface. The optical coating includes an anti-reflective coating and a scratch-resistant coating forming an anti-reflective surface. The article exhibits a maximum hardness of 12 GPa or greater, as measured on the anti-reflective surface by a a Berkovich Indenter Hardness Test along an indentation depth of about 100 nm or greater. The articles of some embodiments exhibit a single side average light reflectance measured at the anti-reflective surface of about 8% or less over an optical wavelength regime in the range from about 400 nm to about 800 nm and a reference point color shift in transmittance or reflectance of less than about 2. In some embodiments, 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.

Durable and scratch-resistant anti-reflective articles

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.

Seng-Tiong Ho

Papers

Varying refractive index optical medium using at least two materials with thicknesses less than a wavelength