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 light from out space is very weak and to guide the light into the optical fiber efficiently in astronomical spectrum telescope is of great importance for spectrum analysis. And the FRD of optical fiber can also decrease the utilization of the light of celestial body for the expending diameter of the out spot from the optical fiber, which makes the spot more diffuser and decrease the distribution...
Optical fiber and optical fiber devices have been widely used in different fields. Fiber image slicer can effectively improve the optical efficiency of high-resolution stellar spectrometer. In order to further improve the light transmission efficiency of the fiber image slicer, a special kind of photonic lantern image slicer was designed, fabricated and tested. 7 cladding-removed fibers with high-refractive-index...
We demonstrate a new kind of six cores photonic liquid crystal fibers (PLCFs) which are arrayed in a ring-type geometry and separated by the air holes. Based on the single mode conditions of PLCFs we found, we design structure parameters of the liquid cores to fulfill that only the fundamental mode transmits in the liquid cores. Through changing the wavelength, the diameter of the liquid cores, the...
A novel fiber-optic sensor unit by combining fiber-optic white-light interferometry and fiber Bragg gratings is proposed for simultaneous long- and short-gauge strain measurements. A new demodulation scheme based on spectral coherence theory for fiber-optic white-light interferometric sensors is proposed. This makes it possible that two quite different types of sensors in one unit can be simultaneously...
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.