Light-emitting diodes based on quantum dots as an active emission can be considered a promising next generation for application in displays and lighting. We report theoretical investigation of green at 550 nm microcavity inorganic–organic light-emitting devices Zn (Te, Se) alloy layer. Distributed Bragg Reflector (DBR) has been applied bottom mirror. The realization high-quality DBR consisting ...

We demonstrate a widely tunable distributed Bragg reflector (DBR) laser operating at 1.8-µm, in which the DBR section was butt-jointed InGaAsP (λ = 1.45 μm) material. Through current and temperature tuning, tuning range of over 11 nm with side mode suppression ratio (SMSR) higher than 30 dB is obtained. Utilizing this laser, water methane detection experiment has been successfully implemented, ...

We report the design, fabrication and characterization of a 1.55-μm dual-wavelength Distributed Bragg Reflector (DBR) laser photonic integrated circuit (PIC) chip for continuous-waves (CW) terahertz generation. The PIC consists pair parallel DBR lasers with semiconductor optical amplifiers (SOA), multimode interference (MMI) coupler combining two wavelength channels into single output waveguide...

BACKGROUND The significance of internal mammary lymph nodes (IMLNs) encountered during dissection of internal mammary vessels (IMVs) for microvascular free flap breast reconstruction (FFBR) remains uncertain. We report our experience with the opportunistic harvest of IMLNs during FFBR. Therapeutic implications and patient outcomes are explored. METHODS All IMV anastomoses for delayed (DBR) or...

Providing scalable and efficient routing services in underwater sensor networks (UWSNs) is very challenging due to the unique characteristics of UWSNs. Firstly, UWSNs often employ acoustic channels for communications because radio signals do not work well in water. Compared with radio-frequency channels, acoustic channels feature much lower bandwidths and several orders of magnitudes longer pro...

As feature sizes decrease to the submicrometer regime and clock rates increase to the multigigahertz range, the limited bandwidth at higher bit rates and longer communication distances in electrical interconnects will create a major bandwidth imbalance in future high-performance computing (HPC) systems. We explore the application of an optoelectronic interconnect for the design of flexible, hig...

In this work, an integrated single chip dual cavity VCSEL has been designed which comprises an electrically pumped 980 nm bottom VCSEL section fabricated using GaInAs/AlGaAs MQW active region and a 1550 nm top VCSEL section constructed using GaInAs/AlGaInAs MQW active region but optically pumped using half of the produced 980 nm light entering into it from the electrically pumped bottom cavity....

The successful enterprises deliver products and services in shorter throughput time and turnover inventory as quickly as possible. Three important approaches to achieve these goals are Materials Requirements Planning (MRPI, MRPII), Just-in-Time (JIT), and Theory of Constraints (TOC). TOC seems to be a viable proposition because it does not require costly affair of system change; rather it is si...

Organic light emitting diodes (OLED) are promising candidates offering in optical sensor applications to detect different gas compositions and excitable optical marker groups in chemical and biological processes. They enable attractive solutions for monitoring the gas phase composition of e.g., dissolved molecular oxygen (O2) species in bio reactors or excitation of fluorescent markers. In this...

'DU bist Radio' (DBR) is an award winning [DBR has been awarded with the "Catholic Media Award of the German Bishops Conference, Prädikat WERTvoll" (2011), the Suisse "Media Prize Aargau/Solothurn" (2010), the German "Alternative Media Award" (2009) and was nominated for the "Prix Europa" (2009)] monthly radio format that goes on air on three Swiss radio stations. The purpose of this program wh...