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 experimentally verified the resilience of the semiconductor optical amplifier with holding beam injection to reflections from transmission line in bidirectional operation over 200 km single fiber path together with influence of the temperature. The experiments show possible positive effects of such configurations with potential to improve bit error rate of transmitted signals.
We proposed a fast all-optical regenerative memory loop which can be used for pulse amplitude modulation (PAM). The ultra-fast all-optical memory loop is based on the Mach-Zehnder interferometer (MZI) with quantum dot (QD) semiconductor optical amplifier (SOA) in each arm. It can operate at bit rates up to 100 Gb/s due to the fast gain recovery typical for QD-SOA. We have carried out the numerical...
Progress on the development of a long wavelength (∼2 µm) generic monolithic photonic integration technology on indium phosphide substrate and a novel concept of a tunable laser realized as a photonic integrated circuit using such technology are presented. Insights into the development of active and passive waveguide structures which are used to define a limited set of on-chip functionalities in the...
Semiconductor optical amplifiers (SOAs) have been receiving intense interest for use as external modulators in a variety of fundamental and advanced applications. However the employment of these modules for the target purpose is hindered by their limited modulation bandwidth. Motivated by this fact, in this invited paper we review the main outcome of our recent research on enabling the direct modulation...
In ultra-high speed incoherent optical communication systems chromatic dispersion is considered a key impairment. Tuneable dispersion compensation for the signal data ultra-short carrier pulses propagated through the fibre optic cable is an effective way of overcoming this problem. The transmission system performance could be improved by manipulating the inbound pulses through the chirp control by...
Next-generation access networks (NGANs) mainly include wavelength division multiplexing (WDM) based 60GHz Radio over Fibre systems (60G-RoF) and WDM Passive Optical Networks (WDM-PONs). Semiconductor optical amplifier may be the key device of colorless unit in these WDM based systems. The device can be effectively utilized as external modulator because it can perform simultaneously amplification and...
We present a nanoseconds optical cross-connect switch with wavelength, space, and time switching operation for high performance optical metro/access networks and data center networks. The fast optical switches can enhance the performance of optical networks by providing large-capacity switching capability and efficiently sharing the data plane resources by exploiting statistical multiplexing. Results...
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.