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.
The applications of specklegram analysis techniques have been developed recently. In this paper, we represent a fiber-optic method to measure the temperature through the analysis of output specklegrams. The proposed all-fiber device excites higher-order modes through splicing a multimode fiber (MMF) to a single-mode fiber (SMF) with a core offset. The basic principle of the sensor is based on determining...
In this paper, we fabricate a microfiber coupler (MFC) functionalized with Teflon thin film. Since Teflon has a negative thermo-optic coefficient, it can compensate for the thermal effects of silica. The temperature dependence of the MFC depends on the radius of microfiber which controls the thermal effect contributions of silica and polymer. The device we fabricate has the temperature sensitivity...
A microfluidic flowmeter is proposed based on graphene integrated “hot-wire” structure. A long-period fiber grating (LPFG) is written in a single mode fiber by CO2 laser to excite the higher-order mode. Graphene is coated around the grating to absorb the higher-order mode and generate the heat. The fiber is sealed into a home-made tube. When the microfluid flows through the graphene, the heat is taken...
In this paper, we utilize a microfiber coupler (MFC) to realize the measurement of the microfluidic flow rate. A glass capillary is chosen as the microfluidic channel. The capillary is coated with gold film. The MFC is wrapped around the gold film which is to heat the device. One kind of UV adhesive is selected to package the device and isolate it from the ambient. The flow rate of the microfluidics...
We demonstrate a state variable fiber pulse laser based on a graphene-integrated microfiber device. A 3-D microfiber coil integrated with graphene acts as a polarization-sensitive saturable absorber. By adjusting the polarization controllers, stable Q-switched pulses and mode-locked rectangular pulses are observed. To our knowledge, this is the first study conducted to achieve switching between rectangular...
In this paper, we demonstrate one kind of fibre-optic device — microfiber coupler (MFC). Spectral response to the micro-force axially is recorded in the experiment. Besides, utilizing the home-made MFC, we propose a high-sensitivity Ampere force based magnetic field meter. We believe more applications in mechanics of the MFC will appear in the near future.
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.