The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
A compact USB-controlled impedance sensing instrument based on a low-noise analog lock-in detector combined with a pseudo-integrator front-end is presented. This system, whose design is illustrated in this paper along with the results of the experimental characterization, has been custom tailored on a novel application in the field of integrated photonics. Non-invasive light monitoring is achieved...
In this paper, we demonstrate through simulation a low-cost, high-speed optical voltage sensing system with a multiplexing capability. The scheme utilizes transducers based on a hybrid piezoelectric/optical construction, whereby the optical power reflected from dual-peak fiber Bragg gratings is modulated in response to an excitation voltage and monitored by photodetection while remaining robust to...
In target tracking scenarios when multiple sensor platforms are present, there is the possibility that sensor registration will occur. If the problem is not properly compensated for, the combined target tracks will have a greater error as translation and rotation errors will be incorporated into the solution. In fact, some of the errors may result in some target tracks not being properly associated...
A novel wind direction monitoring system for the overhead transmission lines based on Fiber Bragg Grating (FBG) sensing is proposed in this paper. Compared to the existing systems, this system has several unique advantages, such as free from power supply on site, excellent ability to avoid electromagnetic interference, immunity to temperature and long lifespan. Firstly, with horizontal FBG arrangement,...
Light-transmitting fiber posts are recognized to potentially improve the cements polymerization, thus potentially improving the bonding of the endodontics restoration. However, different posts generally have completely different light-transmission, hence it is important to be able to compare their optical performances.
The authors investigated and characterized different shapes of plastic optical fiber sensors. U-shaped with two different radiuses, coil-shaped and meander-shaped. The sensors were fabricated and measured using a microcontrolled setup. The probes are implemented as refractometry sensors. The small refractive indexes range of 1.33 to 1.39 is used as a reference, produced by different sucrose concentrations...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.