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 propose a dual-band linear frequency-modulated continuous wave (LFMCW) radar receiver based on a microwave photonic in-phase and quadrature (I/Q) mixer, able to simultaneously operate on two different bands over a very board frequency range. The sharing of hardware resources and joint processing of dual bands are implemented by applying a special dual-band sensing waveform. An unambiguous and independent...
By the proposed algorithm with iterative methods, the post digital linearization technique converted the distorted RF signal into the linear one. Experimentally, more than 29dB suppression of IMD3 has been achieved and a spurious-free dynamic range increases from 104.1 to 128.8dB within a 1-Hz bandwidth.
In this letter, a self-oscillating triangular waveform generator based on an optoelectronic oscillator (OEO) was demonstrated. As a result, 5.35 GHz full-duty-cycle triangular pulse trains were generated via a phase modulator cascaded with a Mach-Zehnder interferometer. Microwave signals were also generated with phase noise of −124dBc/Hz at 10 kHz offset.
In this letter, we proposed and experimentally demonstrated a novel self-oscillating triangular pulses generator based on dual-parallel Mach-Zehnder modulator (DPMZM). The fundamental harmonic of triangular pulses is produced by self-oscillating optoelectronic loop. Even-order harmonics suppression and phase-shifting of the odd-order harmonics are simultaneously realized by carrier phase-shifted double...
A MHz-level optical filtering is achieved by frequency conversion pair between optical and radio carriers as well as electronic filtering. Narrow linewidth lasing is then obtained with 20kHz 20-dB linewidth and 65-dB side-mode suppression ratio.
We present a Fourier domain mode locked (FDML) laser scanning from 1516 to 1550 nm and 1567 to 1597 nm using optical parametric amplifier (OPA) as the gain medium. The output power of -4.85 dBm with sweep rate of 39.6 kHz is achieved.
A tunable single-longitudinal-mode (SLM) fiber optical parametric oscillator is demonstrated by using a subring cavity and a fiber loop mirror incorporated with a saturable absorber. It can provide dual-wavelength SLM output.
We demonstrate a simple fully fiber-integrated picosecond optical parametric oscillator based on high-nonlinear dispersion-shifted fiber. High quality picosecond pulses are generated with a 40-nm tuning range.
Active mode-locking of continuous wave pumped fiber optical parametric oscillators is reported. Stable 10 GHz pulses are obtained with tuning range of 21 nm.
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.