Integrated optical switches using mechano-optical sensing are gaining more attention in many fields due to their fast switching speed, large bandwidth and compact devices. In this paper, a micromachined electrostatically actuated metal plate to sense the evanescent field above the waveguide is presented. The feasibility of MEMS based light weight mechanical plates to achieve fast switching is e...

We present a self-homodyne photonic microwave receiver architecture that uses linear optical modulation and optical filtering for data down-conversion from a microwave carrier. Preliminary results demonstrate the feasibility of this technique for demodulating up to 100 Mb/s digital data from carrier frequencies above 10 GHz. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 345–350,...

It can be argued that optical communications had its origins in ancient times, where modulated sunlight was often used to convey information over large distances. For example, mirrors have been used to create bright flashes of light in certain directions, producing a form of on–off modulation. Similarly, blankets used to cover a signal fire periodically produced puffs of smoke that could be see...

Sterilization using high-intensity electric fields is detrimental to health if safety inadequate, so it necessary study the possibility of sterilization low-intensity fields. This aims determine lowest field intensity and treatment time deactivate bacteria that make up biofilms explain mechanism inactivation. The samples were from Pseudomonas aeruginosa Staphylococcus epidermidis grown on cathe...

We report a beam deflection technique that exploits electric-field controlled deflection and total internal reflection at the interface between two anti-parallel domains realized in a single crystal lithium niobate wafer. The LiNbO3 z-cut sample was 500-μm-thick and was photolithographically patterned and poled by means of an applied electric field, in order to realize two adjacent regions of o...

We present theory and experiment for high-speed optical injection in the absorption region of a quantum-well laser and compare the results with those of the electrical injection in­ cluding carrier transport effect. We show that the main difference between the two responses is the low-frequency roll-off. By using both injection methods, we obtain more accurate and consistent measurements of man...