Abstract:
A spectrometer comprises a substrate and a waveguide on the substrate, the waveguide including an elongate part and a tapered input for guiding electromagnetic radiation to the elongate part. The tapered input includes an input end for receiving the electromagnetic radiation and an output end coupled to the elongate part, the input end being wider than the output end. The spectrometer may further comprise a plurality of resonators coupled to the elongate part of the waveguide.
Abstract:
An interferometer comprising a planar substrate is provided. The interferometer has a splitter formed on the planar substrate to split a received optical signal, a sample arm formed on the planar substrate to receive a first portion of the split optical signal and direct the first portion toward a sample, a reference arm formed on the planar substrate to receive a second portion of the split optical signal, and a detector element to receive an interferogram generated by interfering the second portion of the split optical signal with a received sample signal generated by the first portion of the split signal interacting with the sample.
Abstract:
A THz frequency range antenna is provided which comprises: a semiconductor film (3) having a surface adapted to exhibit surface plasmons in the THz frequency range. The surface of the semiconductor film (3) is structured with an antenna structure (4) arranged to support localized surface plasmon resonances in the THz frequency range.
Abstract:
A spectrophotometer comprising a monolithic semiconductor substrate, one or more wavelength dispersing means, and one or more wavelength detecting means, wherein the monolithic substrate (1) has waveguide means (2) and one or more resonators (3-14) acting as detectors of particular light wavelengths and disposed in proximity to the waveguide means in such a way that evanescent light coupling can occur for said light wavelengths.
Abstract:
소형화가 가능하고 복잡한 광축 맞춤이 불필요한 광 검출기 및 스펙트럼 검출기를 제공한다. 본 발명의 광 검출기는 기판과 상기 기판 상에 형성되고 복수의 철부를 갖는 반도체를 갖는 광 검출기로, 상기 복수의 철부에 입사한 광 중 상기 복수의 철부를 투과하는 광을 검출한다. 본 발명에 의하면, 회절 격자나 프리즘 등의 광학 부품을 이용하지 않고서도 특정의 피크 파장을 갖는 광을 검출할 수 있어 복잡한 광학계의 광축 조정이 불필요한 소형의 광 검출기를 실현할 수 있다.
Abstract:
The invention relates to a multi-spectral image sensor having a two-dimensional array of super-pixels, wherein each super-pixel has at least five sensor elements (11), each comprising a pixel sensor (14), a filter structure (12) having at least one structured layer made of metal or polycrystalline semi-conductor material, which, in response to the electromagnetic radiation of a wavelength region, results in a higher transmission through the filter structure to the pixel sensor (14) than wavelengths surrounding the wavelength region, wherein the at least five sensor elements (12) are jointly integrated on a semi-conductor substrate (16) and are configured on different wavelength regions in pairs.
Abstract:
The invention relates to an optical filter and a method for its production, and to a device for the examination of the spectral and spatial distribution of an electromagnetic radiation irradiated from an object. The invention is based on the task of providing an optical filter of the above described type that is inexpensive to produce, which can be used to detect a plurality of wavelengths, in which, however, tuning of the DBR mirrors by means of displacement is not necessary. Furthermore, a method for the production of such a filter is provided. According to a first aspect of the present invention this task is solved by a method for the production of an optical filter array having two DBR mirrors, and a cavity present between the same, comprising cavity sections having a plurality of different heights, each forming one Fabry Perot filter element, characterized by the following steps: applying a first DBR mirror onto a substrate, forming of a layer comprised of a cavity material on the DBR mirror, wherein this layer is equipped with a plurality of cavity sections forming the filter elements by means of utilizing a nanoimprint method, and applying the second DBR mirror on the cavity material having a structuring that is defined by the different heights of the cavity sections.
Abstract:
Die Erfindung bezieht sich auf einen Optischer Spektralsensor zur Bestimmung der spektralen Information von einfallendem Licht insbesondere im sichtbaren und infraroten Spektralbereich mit mindestens einer optoelektronischen Halbleiteranordnung und mindestens einem Metallfilm, welcher von einem Dielektrikum umgeben ist, wobei der Metallfilm eine periodische Struktur aufweist, wobei die mindestens eine optoelektronische Halbleiteranordnung und der mindestens eine strukturierte Metallfilm so angeordnet sind, dass zu detektierendes Licht zunächst den strukturierten Metallfilm durchsetzt und dann auf die optoelektronische Halbleiteranordnung trifft, wobei der optische Spektralsensor so ausgebildet ist, dass die spektrale Empfindlichkeit, im Wesentlichen von den optischen Eigenschaften des strukturierten Metallfilms bestimmt wird.
Abstract:
A tristimulus colorimeter for measuring reflective or transmissive materials is provided. The colorimeter measures a sample under a calibrated light source, receives inputs to detectors, and determines CIE tristimulus values of the same sample as they would occur under a reference light source. The colorimeter includes a calibrated light source and a single silicon chip that includes three or more detectors. Each detector is permanently coated by a different mix of dyes or other colorants that form a wavelength-selective filter. A single silicon chip embodies all the detectors and electronics, with each detector coated over by deposited filter layers.