Suchergebnisse - Yiping Cui

A microwave frequency measurement system based on a ring assisted Mach-Zehnder interferometer (RAMZI) with a large measurement range and high accuracy is proposed and experimentally demonstrated. By using single-sideband modulation, the microwave signal with unknown frequency is converted to an opti...

Ausführliche Beschreibung

A stopband and passband switchable microwave photonic filter based on the integrated tunable dual ring coupled Mach–Zehnder interferometer has been demonstrated. By using the optical single sideband modulation, the switchable stopband and passband optical responses of the optical filter a...

Ausführliche Beschreibung

A silicon-based n-p-n-type hybrid plasmonic modulator operating at telecom wavelength of 1550 nm is theoretically investigated in this paper. The proposed modulator is dependent on the integration of a 1- <inline-formula> <tex-math notation="LaTeX">$\mu\text{m}$</tex-math>...

Ausführliche Beschreibung

A tunable microwave photonic notch filter with ultrahigh radio frequency (RF) rejection ratio is achieved by using a dual-drive Mach&#x2013;Zender modulator and a microring resonator. In addition, we dedicated to clarify the mechanisms of the microwave photonic notch filters based on a microring...

Ausführliche Beschreibung

A continuously tunable optical delay line with low delay ripple based on four cascaded tunable silicon nitride microring resonators for Ka-band beamforming network is proposed. The delay responses of the tunable optical delay line were investigated theoretically and experimentally. And a maximum del...

Ausführliche Beschreibung

We propose a compact, broadband 2&#x00D7;2 3-dB adiabatic coupler using trapezoidal subwavelength gratings on silicon-on-insulator platform. The proposed device is constructed by two tapered waveguides, which are composed of trapezoidal subwavelength gratings. Broadband 3-dB optical power splitt...

Ausführliche Beschreibung

Microwave photonic technologies have been introduced for achieving broadband radio-frequency signal measurement. However, few of the proposed schemes mention the low-power radio-frequency signal detection, which stringently limits their practical applications in certain areas. In this paper, we desi...

Ausführliche Beschreibung

The synergistic strategy based on magnetic hyperthermia and free radical therapy demonstrates tremendous potential in inducing effective tumor cell death. Therefore, the development of a novel multifunctional micromotor with magnetic-thermal dual responsiveness is of paramount importance. Here, a no...

Ausführliche Beschreibung

A seven-bit optical true time delay unit with a delay tuning increment of 1.42&#x00A0;ps was designed and fabricated on silicon photonics platform, which can be utilized in Ka-band phased array antenna systems. The delay unit consists of eight thermo-optical switches and seven waveguide delay li...

Ausführliche Beschreibung

For the silicon photonics integrated circuits, the optical switch plays a vital role in many applications. Large scale integration requires low switching power and fast switching speed. However the switching time and switching power of silicon thermo-optic switch are typically limited to tens of mic...

Ausführliche Beschreibung