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 investigate a pointing and tracking approach for an OAM multiplexing free-space communication link based on the measurement of the intensity gradient of the received beam. The OAM intensity gradient-based approach may potentially improve the system's tracking accuracy.
We report a transmission of 400 Gbit/s signal over a four channels, 1-meter mode-division-multiplexed free space optical communication link using multiple orbital-angular-momentum beams with non-zero radial indices, achieving a power penalty less than 6 dB.
We design and experimentally demonstrate a free-space distance emulator for propagating OAM beams over long distances in a lab environment. The performance of the system is assessed by measuring spot radius and radius of curvature of propagated beams.
We analyze and measure the performance metrics for a free-space communication link using OAM beams with non-zero radial index p. The received power of OAM beams with p=1 is ∼6 dB higher than p=0.
Using beam divergence controlling to mitigate angular error effects in OAM-based FSO links is investigated through simulation and experiment. Results show that controlling beam divergence allows reducing power loss and angular error induced channel crosstalk.
A chip-level optical interconnect module combined with a vertical-cavity surface-emitting laser (VCSEL) chip, a photodetector (PD) chip, a driver integrated circuit (IC), and an amplifier IC on a silicon-on-insulator (SOI) substrate with 3-D guided-wave paths is experimentally demonstrated. Such an optical interconnect is developed for the signal connection in multicore processors or memory-to-processor...
We compared power spreading of a partially captured orbital-angular-momentum (OAM) beam by using single and double apertures. Double apertures could help reducing crosstalk from OAMl to OAMl+m by ∼10 dB, where l is an integer and m is an odd number.
Based on the theory of semianalytical thermal analysis, temperature and thermal distortion held, additional optical path difference (OPD) and thermal lens within a diode-end-pumped Nd:YAG microchip crystal with back surface cooling were investigated. Expressions of temperature and thermal distortion field, additional OPD and thermal lens were obtained through the analysis on working characteristics...
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.