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.
In this paper, a free-space optical (FSO) communication system with supercontinuum source generated by dispersion shift fiber (DSF) from pulsed light modulated by optical switches is designed and constructed. In addition, the experimental results of free-space optical communication between broadband and narrowband light source are compared. Verifying the feasibility of broad-spectrum FSO communication...
We demonstrate simultaneous spatial and arbitrary temporal pulse-shaping with a picosecond Yb-doped fiber laser system generating an output power > 10 W. By using a self-developed feed-back control algorithm on a single polarization optical pulse shaper, we obtained arbitrary complex pulse structures in the time domain with high accuracy and at high power level. Meanwhile, the pulse shaping in...
We study the artificial neural network (ANN) and feed forward equalizer jointly to mitigate the inter-symbol interference (ISI) and the nonlinear distortions in the optical single-side band and direct-detection (DD) system. The optical SSB signal is generated by a relatively low-cost dual-drive Mach-Zehnder modulator (DDMZM). The two driving signals are a pair of Hilbert signals with Nyquist pulse-shaped...
In this paper, a novel polarization mode dispersion (PMD) monitoring method by adding auxiliary optical signal is presented. Based on four-wave mixing (FWM), the PMD can be monitored in all-optical domain by measuring the power of the idler wave. With the help of auxiliary signal, the change trend of idler wave power with PMD will be enlarged, which expands the scope of monitoring and improves the...
High spectrum efficiency and flexibility are the advantages of elastic optical network, which is the future direction of optical network development. Routing and resource allocation is one of the core technologies of flexible optical networks. This paper propose an improved RSA algorithm in the elastic optical network which based on OSNR impairment model. It considers both QoT (quality of transmission)...
In this paper, a pulse width compression scheme for optical time division multiplexing (OTDM) system based on supercontinuum (SC) is proposed. After injecting a high power narrow line-width pulse width laser into high nonlinear fiber (HNLF), the pulse width has been obviously narrowed. This demonstration suggests that the pulse width compression effect of SC could be used in free-space OTDM system.
By solving Schrodinger equation in standard Split-Step Fourier Transform (SSFT) method, the NRZ, 33%RZ, 50%RZ, CSRZ, DPSK, 33%RZ-DPSK, 50%RZ-DPSK and CSRZ-DPSK were simulated in 40G bit/s single channel transmission system with the influence of dispersion, nonlinearity and polarization mode dispersion. The simulation results show that CSRZ has better performance than the other modulation formats in...
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.