Agilent Technologies

About: Agilent Technologies is a company organization based out in Santa Clara, California, United States. It is known for research contribution in the topics: Signal & Mass spectrometry. The organization has 7398 authors who have published 11518 publications receiving 262410 citations. The organization is also known as: Agilent Technologies, Inc..

Bowtie plasmonic quantum cascade laser antenna

Abstract: We report a bowtie plasmonic quantum cascade laser antenna that can confine coherent mid-infrared radiation well below the diffraction limit. The antenna is fabricated on the facet of a mid-infrared quantum cascade laser and consists of a pair of gold fan-like segments, whose narrow ends are separated by a nanometric gap. Compared with a nano-rod antenna composed of a pair of nano-rods, the bowtie antenna efficiently suppresses the field enhancement at the outer ends of the structure, making it more suitable for spatially-resolved high-resolution chemical and biological imaging and spectroscopy. The antenna near field is characterized by an apertureless near-field scanning optical microscope; field confinement as small as 130 nm is demonstrated at a wavelength of 7.0 mum.

Light emitting diode based light system with a redundant light source

Abstract: An LED-based light system includes a primary light source and at least one redundant light source. The primary light source is activated by itself and the performance of the light source is measured to determine whether nor not to drive the redundant light source. The redundant light source is activated when the performance measurements indicate that a performance characteristic is not being met by the primary light source alone. The first light system can be activated in combination with the redundant light source once the decision is made to activate the redundant light source.

System and method for universal service activation

Abstract: The present invention provides a scalable, high-performance universal service activation system and method for activating service(s) on a network management system/EMS or other information management system with universal or generic informational changes entered in a service provisioning system(s). The invention is particularly useful in describing and initiating the activation of telecommunications and data communications network services in a vendor neutral manner, but can be employed to advantage for providing universal service activation for any industry and independent of technology. The inventive system and method incorporates object behavior concepts with the existing network management approach to create an EMS/NMS/OSS that significantly reduces the human effort to integrate network element configuration and provisioning for new and modified network elements. The SMS/NMS/OSS provides an object behavior model which is generally populated using different means, including a manually generated table, spreadsheet or file. The SMS/NMS/OSS provides a domain manager for generic method processing. The SMS/NMS/OSS domain manager provides a means to rollback or remove an implemented change if the change is canceled or unsuccessfully implemented. The SMS/NMS/OSS provides an object builder to connect the object through drag and drop component connections and export them visually to present the object architecture using standard software graphics tools. The SMS/NMS/EMS/OSS provides means to modify object behavior in an operational system without the need to stop, reset, reinitialize, recompile the SMS/NMS/EMS/OSS components or modules. This yields a SMS/NMS/EMS/OSS that has less risk of human error, requires less time to operate, costs less, and does not interrupt an functioning network system.

Phase-locked loops: a control centric tutorial

Abstract: Presents a tutorial on phase-locked loops from a control systems perspective. It starts with an introduction of the loop as a feedback control problem, with both the similarities and differences to traditional control problems. Chief among the differences is the necessary inclusion of two nonlinearities in the loop that are not parasitic, but essential to the loop's operation. Analysis methods, both linear and nonlinear are discussed. Then digital loops are discussed, followed by loop components and a cursory look at noise. Finally, the paper ends with a discussion of different applications of PLLs and their relatives.