Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
We experimentally demonstrated optical encoding and decoding to optimize a shape of optical pulse for encoding. By encoding with NRZ format, higher resistant transmission and increase in the number of discriminable codes are achieved.
Exploiting photonic technologies will be the best way to create bandwidth abundant and energy efficient future networks, however, their introduction remains limited. The barriers and possible solutions for future networks are discussed.
We show how slow-light enhanced four-wave mixing in dispersion engineered photonic crystal waveguides can result in ultra-compact devices enabling different applications, namely time-division demultiplexing of 160Gbaud data streams and the generation of correlated photon pairs.
RZ-DPSK to NRZ-DPSK format conversion in a silicon microring resonator is demonstrated experimentally for the first time at 41.6 Gb/s. The converted signal eye diagrams and bit-error-rate measurements show the good performance of the scheme.
All-optical processing of phase encoded signals with nonlinear semiconductor optical amplifiers offers potential advantages. As examples, we demonstrate QPSK to 8PSK conversion and decomposition of QPSK to two BPSK outputs at new wavelengths.
We demonstrate an all-optical, error-free time-division demultiplexing for NRZ-ASK signal with NRZ-to-RZ format conversion using four-wave mixing in a silicon-on-insulator waveguide. Different demultiplexing channel bit rates are verified by adopting different pump clocks.
This paper presents the effectiveness of high order phase noise compensation by off-line experiment which shows the scheme can reduce the pilot tone density to 25% or improve the EVM by 0.25dB for 16QAM OFDM.
We demonstrate a single-feeder WDM-PON system with enhanced reflection tolerance by applying dicode modulation on RSOA-based ONU. Extended reach of 90 km and 60 km are achieved for 1.25 Gb/s and 2.5 Gb/s uplink, respectively.
We review recent progress in all-optical OFDM transmission using a photonic-integrated optical discrete Fourier transform (DFT) device. We demonstrate that all-optical DFT can enable reduced-complexity OFDM transmission with reduced power consumption compared to all-electronic optical OFDM implementation.
Performance limits of signal processing in optical domain are discussed. Specialized functions applicable to transmission link are identified and quantified. Hybrid construction of photonics/electronics processing devices used in analog-to-digital conversion, signal replication, penalty mitigation and switching are described and illustrated in practical examples.
We measured SPM-induced phase shift in the silicon wire waveguide at a carrier-steady state by frequency-resolved optical gating at a repetition rate of 10 GHz, and designed all-optical switch based on Mach-Zehnder interferometer.
Manipulation of optical signals with tunablity and reconfigurability is essential for high-speed systems or networks. We review tunable photonic microwave signal generation and filtering, followed by all-optical signal processing in polarization-division-multiplexed systems.
We present a polarization-insensitive non-return-to-zero (NRZ) to return-to-zero (RZ) conversion. In this scheme, the pulsewidth of the converted RZ signal can be flexibly tuned from 10 ps to 2 ps.
We experimentally demonstrate a self-coupled optical waveguide (SCOW)-based optical resonator. Transmission spectra reveal the resonators can exhibit split, broadened, or enhanced resonance dips. The SCOW resonators can be used for second-order optical filters.
This paper provides an overview of the latest generation of commercial high capacity transmission systems. It also shows how the approaches used there will be extended to build even higher capacity systems in the future.
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.