We present the first experimental demonstration of an asynchronous digital optical regenerator at 42.67 Gbit/s. The system effectively retimes incoming asynchronous data bursts to a local clock without burst mode clock recovery and converts the signal to a desired wavelength and duty cycle. ©2008 Optical Society of America OCIS codes: (060.2330) Fiber optics communications; (060.4510) Optical c...

The Stirling engine is capable of converting any source thermal energy into kinetic energy, which makes it an attractive option for utilizing low-temperature sources such as geothermal or waste heat below 100 °C. However, at these low temperatures, the effects losses are proportionally higher due to lower potential available. One significant loss excess dead volume, wherein a contributor exchan...

We introduce a reduced-order endoreversible model of Vuilleumier refrigerator for waste heat recovery. Based on the cycle, in this working gas is alternately displaced between three subsystems that are thermal contact with external reservoirs. Regarding refrigeration performance, very crucial components machine its two regenerators. For obtaining sufficiently accurate machine, it hence essentia...

In this paper, we present a new model design and parametric studies of miniature Stirling cooler machine for on-site refrigeration. The MEMS (Microelectromechanical systems) technology is investigated to machine. concept could be used provide cooling at chip scale mitigate hot spots in electronic devices. Whereas numerous works deal with engines macroscopic scale, only few concern miniaturized ...