Patents Assigned to FBGS TECHNOLOGIES GMBH
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Patent number: 11733463Abstract: A fiber-optic system for use in optical sensing includes a multicore sensing fiber having at least two cores of which each of the at least two cores has a first core diameter, and a multicore lead-in fiber having at least two cores including a position corresponding with the position of the at least two cores of the multicore sensing fiber. Each of the at least two cores of the multicore lead-in fiber have a second core diameter. The second core diameter is substantially larger than the first core diameter. The system further includes an alignment means for aligning the multicore sensing fiber and the multicore lead-in fiber so that the lead-in fiber and the multicore sensing fiber are configured for coupling radiation between the fibers through the cores.Type: GrantFiled: June 26, 2019Date of Patent: August 22, 2023Assignees: FBGS TECHNOLOGIES GMBH, FBGS INTERNATIONAL NVInventors: Christian Voigtlander, Johan Vlekken, Bram Van Hoe, Jan Van Roosbroeck, Eric Lindner
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Patent number: 11561119Abstract: A system for interrogating sensors in a fiber optical sensor network includes groups of sensors. The sensors in one group operate at different wavelengths, and the sensors of other groups may have overlapping wavelengths. A light source generates a broadband light signal, input and output means for guides the broadband light to the fiber optical sensor network for illuminating the sensors and for coupling the light signal coming from the sensors of the fiber optical sensor network to the detection system, and a detection system detects the received light signal, during a detection integration time. The system is arranged for selecting pre-dominantly the received light coming from the different sensors of a selected group of sensors using a code-division multiplexing technique and simultaneously detecting sensors of the selected group of sensors using a wavelength-division multiplexing technique.Type: GrantFiled: October 4, 2019Date of Patent: January 24, 2023Assignees: FBGS TECHNOLOGIES GMBH, FBGS INTERNATIONAL NVInventors: Eric Lindner, Johan Vlekken, Bram Van Hoe, Christian Voigtlander, Jan Rene Van Roosbroeck, Steffen Lochmann, Andreas Ahrens, Marek Gotten
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Patent number: 11442223Abstract: A system for producing an optical fiber with inscribed grating array is described. The system comprises a fiber drawing apparatus for drawing an optical fiber, a writing system for inscribing a grating in the optical fiber during the drawing process of the optical fiber and a controller for controlling the driving of the writing system. According to the present invention the fiber drawing apparatus also comprises a fiber length and/or drawing detecting means for determining the fiber length and/or fiber drawing speed and/or a fiber drawing parameter during the drawing process. The controller thereby is configured for capturing information from the fiber length and/or drawing detecting means and for controlling the writing system based on the captured information captured from the fiber length and/or drawing detecting means.Type: GrantFiled: December 18, 2017Date of Patent: September 13, 2022Assignees: FBGS TECHNOLOGIES GMBH, FBGS INTERNATIONAL NVInventors: Eric Lindner, Johan Vlekken, Christian Voigtländer, Bram Van Hoe, Manfred Rothhardt, Hartmut Bartelt
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Patent number: 11248980Abstract: A sensor system for sensing pressure of a first fluid (e.g. a liquid and/or gas) comprises an optical sensing fiber that is configured for sensing pressure, and at least one sensor housing embedding the optical sensing fiber. The sensor housing is filled with a second fluid. The sensor housing comprises a non-hermetic pressure transfer medium comprised in the sensor system and positioned in the sensor housing such that a pressure of the first fluid can be transferred via the pressure transfer medium onto the second fluid towards the optical sensing fiber for determining based thereon a pressure of the first fluid.Type: GrantFiled: March 29, 2019Date of Patent: February 15, 2022Assignee: FBGS TECHNOLOGIES GMBHInventors: Jan Van Roosbroeck, Johan Vlekken, Bram Van Hoe, Eric Lindner