摘要:
A device for optically detecting fluid comprises several optical fibres, each of which is provided with a sensor end and an opposite coupling end. Each of the sensor ends is provided with an optical sensor having reflective properties which depend on the concentration of the fluid to be detected at the sensor. The device comprises a light source, a detector and an optical body. The coupling ends of the optical fibres are connected to the optical body at a distance from one another. The light source and the detector are arranged on the optical body in such a manner that light is conducted from the light source through the optical body and is coupled at the coupling ends of the optical fibres and light which is reflected by the optical sensor and which is ejected from the coupling ends of the optical fibres is conducted through the optical body and is received by the detector. The distance between the coupling ends of the optical fibres is such that the ejected light from each coupling end can be detected separately.
摘要:
This invention relates to an optical sensor element comprising a photonic crystal constituted by a membrane of a chosen transparent material, the membrane being provided with a number of defined openings in a chosen pattern, the pattern being adapted to provide resonance at a chosen wavelength or range of wavelengths, wherein said openings are provided with a reactive material acting as a receptor for a chosen type of molecules, e.g. proteins, the presence of which alters the resonance and/or scattering conditions in the sensor element thus altering the amount of light propagating out of the membrane plane.
摘要:
In one aspect, the invention provides an optical sensor (100) comprising a flexible substrate (2) and an optical element (3, 3') being positioned on the substrate. The flexible substrate comprises deformations (5) affecting the optical element and the deformations are provided in a substrate deformation zone (4, 4') at least partly surrounding the optical element. It is an object of the present invention to provide an optical sensor configuration compatible with roll-to-roll manufacturing.
摘要:
Die Erfindung betrifft eine optische Sensoranordnung, umfassend einen Messwellenleiter (1), der eine in Abhängigkeit von einer Messgröße veränderliche Doppelbrechung zeigt, sowie eine optische Auswerteeinheit (2) mit zwei durch Wellenleiter realisierten opti schen Armen (5, 6), die einen Mach-Zehnder-Interferoraeter bilden, und einem optischen Koppler (11) zum Zusammenführen von in den zwei Armen (5, 6) geführtem Licht, wobei mindestens ein Ausgang des Kopplers (11) optisch mit mindestens einem lichtempfindlichen Element (12) verbunden ist und wobei die Auswerteeinheit (2) einen polarisierenden Strahlteiler (7) umfasst, von dem die genannten optischen Arme (5, 6) ausgehen, wobei der Messwellenleiter (1) einem optischen Eingang des polarisierenden Strahlteilers (7) vorgeschaltet ist und wobei in einem Verlauf eines der optischen Arme (5, 6) ein Polarisationskonverter (10) angeordnet ist. Die Erfindung betrifft ferner ein Detektionsverfahren, das mit dieser Sensoranordnung durchführbar ist.
摘要:
A multi-layer structure (100) and a method for manufacturing the multi-layer structure are provided. The multi-layer structure includes: a waveguide (102) including one or more light coupling regions (107) having a refractive index gradient; at least one organic material based active optical element (106) disposed above the waveguide; wherein the one or more light coupling regions is configured to change characteristics of light propagating in the waveguide; wherein at least one of the one or more light coupling regions is configured to enhance light coupling between the waveguide and the active optical element.
摘要:
In one aspect, the invention provides an optical sensor comprising a flexible substrate and an optical element being positioned on the substrate. The flexible substrate comprises deformations affecting the optical element and the deformations are provided in a substrate deformation zone at least partly surrounding the optical element. It is an object of the present invention to provide an optical sensor configuration compatible with roll-to-roll manufacturing.
摘要:
Integrated optical waveguide interferometer for evanescent sensing of chemical and/or physical quantities, comprising a substrate carrying a waveguide layer structure provided with: - a first waveguide core layer sandwiched between two first cladding layers formed by a first lower and a first upper (6) cladding layer, of a lower refractive index than the first waveguide core layer, - a second waveguide core layer sandwiched between two second claddings layers formed by a second lower and a second upper (6) cladding layer, of a lower refractive index than the second waveguide core layer, - a splitter (2) and a combiner (5) for optically coupling said first and second waveguide core layers at first and second junctions, respectively, characterized by - a modulation section of a polymer cladding material (9) included in one of the first upper cladding layers (6) and/or included in one of the second upper cladding layers (6), the polymer cladding material covering an identifiable area of said first waveguide core layer and/or said second waveguide core layer between the first and second junctions, said polymer cladding material having an index of refraction between 1.46 and 2.5 that varies with temperature, thereby changing the phase of radiation propagating through said first and second waveguide core layers, means (10) for raising and lowering the temperature of said polymer cladding material (9).
摘要:
A side illuminated multi point multi parameter optical fiber sensor that requires no sensitive coating is provided. This sensor comprises an optical fiber having at least one removed cladding section as the sensitive region, at least one probing light source that side illuminates the fiber, a power supply, a detector, a signal processor and a display. The sensitive optical fiber is optically affected by the presence of a measurand medium that can fluoresce, phosphoresce, absorb and/or scatter the probing light. This probing light is guided by the fiber core towards a detector which measures the light intensity and this light intensity is correlated with a measurand.
摘要:
Eine Vorrichtung zur Messung zumindest eines Parameters einer arteriellen Blutprobe weist einen Durchflusssensor (2) mit standardisierten Anschlusselementen (3, 4) auf, die mit der Einlass- und der Auslassseite (5, 6) der Messzelle (7) des Durchflusssensors (2) in Verbindung stehen, wobei die Messzelle (7) zumindest ein mit der Blutprobe in Kontakt bringbares optochemisches Sensorelement (8) aufweist. Ein auf den Durchflusssensor (2) abnehmbar, aufsteckbaren Konnektor (9) ist mit zumindest einer Lichtquelle (10) zur Anregung des optochemischen Sensorselementes (8) und zumindest einem Fotodetektor (11) zur Aufnahme der Messstrahlung des optochemischen Sensorelementes (8) ausgestattet. Ein elektronisches Modul (12), welches eine elektrische Verbindungsleitung (13) zum Konnektor (9) aufweist, kontaktiert die zumindest eine Lichtquelle (10) und den zumindest einen Fotodetektor (11), wobei der Durchflusssensor (2) mit dem einlassseitigen Anschlusselement (3) an den standardisierten Anschluss (14) eines arteriellen Katheters (1) und mit dem auslassseitigen Anschluss (4) an den standardisierten Anschluss (15) eines arteriellen Infusionsbestecks (16) anschließbar ist.
摘要:
Die Erfindung betrifft eine Vorrichtung zur Konzentrationsbestimmung von Sauerstoff, bestehend aus einem Gerät zur optischen (Zeitbereichs-)Reflektometrie (OTDR-Gerät) mit mindestens einer Faserstrecke, bei dem am Ende oder innerhalb der Faserstrecke mindestens ein Sensorelement angeordnet ist, das einen Sensorfarbstoff mit einem Absorptionsmaximum