Abstract: By introducing magneto-optical garnets with high Faraday rotation and low optical loss in a ring resonator, a nonreciprocal phase shift is generated to split the resonance wavelengths of clockwise and counter-clockwise modes under magnetic field. There are three main applications based on this nonreciprocal effect, optical isolators, optical circulators, and tunable optical filters. The concept of the tunable filters and the design of optical isolators for TE and TM modes are described in the paper. With proper optical ring isolator configurations, optical circulators can be realized.

Abstract: By introducing magneto-optical garnets with high Faraday rotation and low optical loss in a ring resonator, a nonreciprocal phase shift is generated to split the resonance wavelengths of clockwise and counter-clockwise modes under magnetic field. There are three main applications based on this nonreciprocal effect, optical isolators, optical circulators, and tunable optical filters. The concept of the tunable filters and the design of optical isolators for TE and TM modes are described in the paper. With proper optical ring isolator configurations, optical circulators can be realized.

Abstract: In organic emitting diode circuit that is equipped with voltage compensation function and a method for compensating voltage in the organic light emitting diode circuit are presented. The circuit includes a first transistor, a pixel control unit, a precharge control component and an OLED. The present invention OLED presents numerous benefits when compared to conventional OLED such as the present invention OLED can be designed as a common cathode component such that it has improved aperture ratio, it enables array testing of the circuit before the fabrication process is completed, and it allows color and brightness compensation in addition to voltage compensation.