Abstract-This paper demonstrates a novel technique to wirelessly injection lock a state-of-the-art 40 GHz mode locked laser and shows baseband data transmission using such a technique. This allows mode locked lasers to be used as millimeter wave modulated data sources for next generation Radio-over-Fiber systems. Binary phase shift keying data transmission rates of up to 22 Mb/s have been demonstrated for a short wireless range of 10 cm. These devices can also be used as millimeter wave phase shifters for advanced antenna beam steering systems.Index Terms-Beam steering systems, binary phase shift keying, millimeter wave, mode locked lasers, phase shifters, radio-overfiber, wireless injection locking.

Abstract-An investigation into using hybrid mode-locked lasers to implement millimeter wave phase shift is presented. The phase shift is measured directly using a vector network analyzer enabling straightforward characterization of such systems. Both magnitude and phase of the modulation response are measured and a "plateau" is observed in the magnitude response which corresponds to the locking range of the system. Phase shifts of greater than 90 are observed and such devices could have application in millimeter wave radio-over-fiber phased array antenna systems.Index Terms-Millimeter wave (mm-wave), mode locked laser (MLL) , vector network analyzer.

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New composite materials with a high percentage of their composition based on renewable resources, matrix and reinforcement, were prepared. The excellent compatibility of the main phases lead to an unusual outstanding composite behavior as follows: higher modulus and strength, but also higher deformability and fracture resistance than the neat polymer. A bio‐based polyol was obtained by chemical modification of tung oil to be used in the production of polyurethane composites reinforced with pine wood flour (WF). The mechanical behavior as a function of wood flour content was evaluated through tensile and impact tests. Increasing the filler content induced an increase in tensile modulus and strength as well as in impact strength. Composites containing 10 and 15 wt% of wood flour presented higher tensile ultimate strain than that of the unfilled polyurethane. These results were explained by a strong interfacial adhesion (physical and chemical bonding), which was also supported by SEM micrography and strength modeling. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers

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