Low noise optical receiver with multi-octave bandwidth

Optical and Quantum Electronics - A new approach for the design and construction of low noise broadband optical receivers is presented utilizing distributed amplification based on hybrid integrated...     

Multiscale mechanobiology modeling for surgery assessment

This paper discusses some of the concept of mod-eling surgery outcome. It is also an attempt to offer a roadmap for progress. This paper may serve as a common groundof discussion for both communities i.e surgeons and com-putational scientist in its broadest sense. Predicting surgeryoutcome is a very difficult task. All patients are different,and multiple factors such as genetic, or environment con-ditions plays a role. The difficulty is to construct modelsthat are complex enough to address some of these significantmultiscale elements and simple enough to be used in clini-cal conditions and calibrated on patient data. We will pro-vide a multilevel progressive approach inspired by two ap-plications in surgery that we have been working on. One isabout vein graft adaptation after a transplantation, the otheris the recovery of cosmesis outcome after a breast lumpec-tomy. This work, that is still very much in progress, mayteach us some lessons. We are convinced that the digital rev-olution that is transforming the working environment of thesurgeon makes closer collaboration between surgeons andcomputational scientist unavoidable. We believe that "com-putational surgery" will allow the community to develop pre-dictive model of the surgery outcome and greatprogresses insurgery procedures that goes far beyond the operating roomprocedural aspect.     

An Optical Carrier Generation Approach for Cellular Millimeter-Wave Radio Systems

An optical carrier generation approach is presented for cellular millimeter-wave radio systems. The well-known methods distribute the millimeter wave signal via fibers. They have drawbacks because they need very high-speed photonic compo nents that are expensive. This problem is overcome by the new approach utilizing an optically transmitted low-frequency reference signal to generate the millimeter wave carrier. The new approach applies inexpensive photonic components and is less sensitive to the fiber dispersion.     

An Optical Carrier Generation Approach for Cellular Millimeter-Wave Radio Systems

An optical carrier generation approach is presented for cellular millimeter-wave radio systems. The well-known methods distribute the millimeter wave signal via fibers. They have drawbacks because they need very high-speed photonic compo nents that are expensive. This problem is overcome by the new approach utilizing an optically transmitted low-frequency reference signal to generate the millimeter wave carrier. The new approach applies inexpensive photonic components and is less sensitive to the fiber dispersion.