Jiu Mao

Chongqing University | CQU · School of Opto-Electronic Engineering

A frequency-sextupling dual-loop optoelectronic oscillator (OEO) without any electronic microwave filters is proposed and demonstrated. In the proposed OEO, a modulated signal that consists of an optical carrier and odd-order sidebands is generated using a Mach-Zehnder interferometer (MZI). The modulated signal is then divided into reflection compo...

Recently, electrostatic adhesion force (EAF) has gained considerable interest for handling dielectric materials. EAF arises from the non-uniform electrical field generated between electrostatic adhesive with special electrode patterns and materials after alternative polarity potentials are applied to the electrodes. In this paper, a theoretical ana...

In recent years, electrostatic adhesion technology on the wall climbing robots has attracted many researchers interest for its outstanding characteristics. In this paper, a theoretical analytical model is derived from the electrostatic adhesion field between the dielectric wall and a coplanar array of parallel strip electrodes called inter-digital...

A self-decoupled inelastic style piezoelectric three-degrees-of-freedom (three-DOF) accelerometer is put forward for the solution of cross coupling interference without decoupling easily in the field of three-DOF acceleration sensing. Meanwhile, the proposed piezoelectric three-DOF accelerometer has simple structure and solves the contradictions be...

Electrostatic adhesion technology having good application prospects on wall climbing robots has been extensively investigated in recent years. In this paper, an accurate analytical model that is derived from ideal the parallel-plate capacitor consisting of two different dielectric layers in series has been developed by the Maxwell stress tensor for...

According to the principle of centroid measurement, position-sensitive detectors (PSD) are commonly used for micro displacement detection. However, single-beam detection method cannot satisfy such tasks as multi-dimension position measurement, three dimension vision reconstruction, and robot precision positioning, which require synchronous measurem...

A novel dual-loop optoelectronic oscillator (OEO), which is constructed based on all optical signal processing, is proposed and analyzed. By inserting an erbium-doped fiber amplifier (EDFA) and a fiber Bragg grating (FBG) on the optical domain, the amplification and filter are implemented in the OEO loop. The performance of the OEO is improved with...

In this paper, a compact, low jitter, nanosecond rise time, command triggered, high peak power, gas-switch pulse generator system is developed for high energy physics experiment. The main components of the system are a high voltage capacitor, the spark gap switch and R = 50 Ω load resistance built into a structure to obtain a fast high power pulse....