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 simple photonic scheme for generation of linear frequency modulated (LFM) THz pulses with large bandwidth is experimentally demonstrated based on an optical interferometer. We successfully generate linearly chirped THz pulses centered at 350 GHz, and featuring a bandwidth in excess of 40 GHz. The tunability of the THz center frequency is also investigated in the experiment. The time bandwidth product...
In this paper, a microwave spectrum sensing system based on photonic time stretch with large stretch factor beyond 80 is designed and experimentally demonstrated. A 10 GHz input signal is turned into a 122 MHz signal after stretching and the signal spectrum is successfully reconstructed by a DSP. The mean square error for spectrum sensing of X-band microwave signal in the experiment is measured to...
An approach to realizing photonic analog-to-digital conversion based on photonic time stretch and compressive sensing (CS) technique is proposed. A multi-tone signal (spectrally sparse) within a 20 GHz bandwidth is investigated. The wideband signal is firstly stretched in the time domain by a photonic time-stretcher and then reconstructed by CS based on random demodulator (RD). The random mixing in...
An approach to realizing wideband analog-to-digital conversion based on the techniques of photonic time stretch (PTS) and compressive sensing (CS) is proposed. In the system, a multitone signal within a wide bandwidth (spectrally sparse) signal is slowed down in the time domain by a photonic time stretcher. The stretched signal is then down-sampled and reconstructed by a random-demodulator-based CS...
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.