Abstract-A new balanced bandpass filter (BPF) with tunable bandwidth using tri-mode stubloaded resonators is proposed. To tune the differential-mode bandwidth, the two even-mode resonance frequencies and two transmission zeros (TZs) are tuned while the odd-mode resonance frequency keeps unchanged

Abstract — The authors report, for the first time, a highly selective and widely tunable optical filter at 1.55 m using a Fabry–Perot resonator with micromachined InP/air-gap distributed Bragg reflectors. The minimum resonance full-width at half-maximum (FWHM), as measured by microreflectivity

.3600) Lasers, tunable Wavelength tuning of solid-state lasers is typically obtained by use of intra-cavity elements which introduce losses at undesired wavelengths, such as etalons, birefringent filters and prisms. The performance of these elements depends on the wavelength selectivity, i.e. the introduced

continuously with high se-lectivity by merely one single control. This is quite different from filter-based concept which is complicated to co-design and implement a tiny narrow band tunable filter over wide frequency ranges and very difficult to control with one element. And also the design, adjustment

iAbstract This thesis studies the performance limitations of MEMS tunable interferometers. MEMS technology offers many advantages, including scalability for wide tuning range in a single device, sensitivity for precision sensing, and batch fabrication capability for cost reduction. However, MEMS

mixers. Furthermore, the small efficiency requires short optical pulses for avoiding a high heat dissipation of the frequency mixers. We investigated an ultra stable 1W two colour THz pump source for the generation of a THz beat signal with rapid single mode tuning over several THz. The system consist

RF systems need high-frequency widely-tunable high-Q bandpass filters for channel selec-tion filters and local oscillators. This thesis describes the design, fabrication and testing of a electromagnetic cavity resonator designed for such applications. Alternative technologies provide wide tuning

This article introduces an architecture for a document-partitioned search engine, based on a novel approach combining collection selection and load balancing, called load-driven routing. By exploiting the query-vector document model, and the incremental caching technique, our architecture can

is nonlinear. This paper presents novel designs where the moving electrodes are fixed-edge flexible plates. The plate displacement is selectively limited by a set of rigid steps, located between two electrodes, to generate a smooth and linear response and high tunability. Three different step heights

tuning curves based on spike counts and on peak firing rates for representative neurons in each of the cortical layers are displayed in Neurons in V1 of alert monkeys show a wide range of selectivity for orientation Silent cells with no ongoing activity were particularly selective and they formed a