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.
We present a method to produce continuous, fast and truly-linear frequency-sweep optical signal driven by arbitrary waveform generator. By using this signal as the optical source, a high-repetition-rate optical frequency domain reflectometry is experimentally demonstrated with linear response to outside perturbation. This work has significant value for achieving high performance distributed acoustic...
Recently, Φ-OTDR based on optical I/Q demodulation has been proposed as a promising solution for distributed acoustic sensing. This paper characterizes the imbalance of coherent-receiver optical front-end, and analyses its impact on phase demodulation in Φ-OTDR with coherent detection.
In this paper, a new structure of optical add-drop multiplexer based on cascaded phase shifted linearly chirped fiber Bragg grating (CPSLCFBG) and Mach-Zehnder Interferometer (MZI) is proposed. The spectrum of drop port and output port of the OADM is analyzed using transmission matrix method by optimizing of CPSLCFBG with Cap apodization function. At the port of the drop and the output, which has...
An optical power meter is used to monitor the reflected light of the fiber-end to control the whole coating process based on the research of optically driven position. The coating of graphene oxide (GO) is mainly divided into fiber end face. The film's uniformity is investigated by changing the coating time, the incident light power and the depth of the immersion in the solution. An optical fiber...
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.