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 graded index ring-core fiber for long-distance OAM mode transmission. Due to the graded index profile of the ring-shaped fiber core, the supported OAM modes are more pure and degenerate than those in the step-index ring-core fibers. A simple ring-core fiber design scheme is introduced. This scheme illustrates the relationship between the mode effective refractive indices and the designed...
Spin-directional coupling is associated with the quantum spin-Hall effect of photons, which has attracted much attention over the past few years. Here, we report orbital angular momentum (OAM) assisted spin-directional coupling and its reversal in a silicon nitride (SiNx) photonic integrated circuit. SiNx microring resonators with angular grating have been designed and realized to emit high purity...
We numerically investigate UTC PD structures that use highly diffusible beryllium (Be) as the p-type impurity in absorption layer An intrinsic InGaAs layer is added between the absorption layer and collection layer as a diffusion buffer. The influence of this buffer layer is analyzed, and the results obtain shows that high responsivity and high speed can be achieved.
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.