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.
Thanks to the use of a digital multi-subcarrier architecture, we experimentally demonstrate a maximum reach increase of 11% for a 19×128Gbit/s PM-QPSK WDM comb with respect to an equivalent single-subcarrier system, achieving 14,100-km transmission over PSCF fiber with EDFA-only amplification.
We report the first experimental validation of the EGN-model. Using a PM-QPSK Nyquist-WDM transmission we confirm the enhanced accuracy of the EGN-model comparing maximum reach predictions with those of GN-model.
We accurately characterize nonlinear phase noise in uncompensated coherent optical systems. We find that, though present, its impact on system performance is typically negligible in a wide range of practical system scenarios.
A photonic-assisted microwave phase shifter using phase modulator and fiber-Bragg-grating in a round trip configuration is proposed. The phase of 20∼30 GHz microwave signals can be shifted by properly adjusting the voltage of PM-driving signal.
Multiform spectral shaping schemes to provide tunability on the shape, free spectral range and bandwidth of microwave photonic signals are reviewed. By utilizing specific dispersion-based conversion techniques, the proposed scheme scan be widely used to achieve flexible manipulation of microwave signals.
Absolute phase noise < −100 dBc/Hz at 1 Hz offset from a 10 GHz carrier is demonstrated by using an Er:fiber frequency comb to frequency-divide a narrow linewidth CW laser.
We demonstrate a 10 GHz photonic oscillator based on optical frequency division of a high-stability optical reference with a modelocked fs laser. Characterization with a second independent photonic oscillator reveals a close-to-carrier phase noise that is < 100 dBc/Hz, reducing to a shot noise floor of −156 dBc/Hz at a 1MHz offset.
We show a photonic oscillator providing 10 GHz microwaves having L(f)=−104 dBc/Hz at 1 Hz offset and fractional instability <8×10−16 at 1 s. These values are verified by operation and comparison of two independent systems.
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.