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.
A novel switchable microwave photonic filter (MPF) based on a second-order Lyot loop and an optical phase modulator (PM) is presented and experimentally demonstrated. A broadband light emitted from a broadband optical source (BOS) is sliced by a second-order Lyot loop which acts as a spectrum slicer, then, is modulated by an optical PM and delayed by a dispersive medium. By doing this, a switchable...
A high Q microwave photonic filter is proposed and experimentally demonstrated. It is based on a recirculating delay line comprising a semiconductor optical amplifier used to generate negative tap. A frequency response with a high Q of 543, a rejection ratio of 40 dB and good shape factor is obtained.
A tunable and switchable single-longitudinal-mode dual-wavelength fiber laser incorporating a reconfigurable dual-pass Mach-Zehnder interferometer filter and its application in microwave generation was proposed and demonstrated.
A simple and flexible simultaneous clock extraction for WDM NRZ-DPSK signals with mixed bit-rates from 10-to-40Gb/s is proposed and demonstrated using a single commercial AWG. Clock recovery can be easily achieved from the pre-processed signals.
A microwave photonic filter with passband and stopband interchanged is proposed and demonstrated. The structure is based on a recirculating delay line loop comprising a semiconductor optical amplifier (SOA) and a tunable narrowband optical filter, converted signal used as negative tap is generated employing the cross-gain modulation of the amplified spontaneous emission spectrum of the SOA. The filter...
We propose and demonstrate a multi-level all-optical format conversion from NRZ signal to RZ signal, using a semiconductor optical amplifier (SOA) and a detuned optical filter. NRZ signal with three intensity levels can be converted to corresponding RZ signal with error free.
We propose and demonstrate a simple and flexible all-optical NRZ-DQPSK receiver based on optical detuned filtering. By adjusting the detuning of two given filters, the in-phase and quadrature data can be demodulated from 20-to-80Gb/s NRZ-DQPSK signals.
We experimentally demonstrate all-optical clock recovery (CR) from the nonreturn-to-zero (NRZ) data without any preprocess measure. Multi-quantum-well (MQW) Fabry-Pérot semiconductor optical amplifier (FP-SOA) acts as dual role including both data format converter and clock recovery device. To achieve amplitude equalization of recovered clock pulses, a self-nonlinear polarization switching (SNPS)...
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.