Various embodiments of methods and systems for pausing and shaping data flow while supporting both parameterized and prioritized Quality of Service are disclosed. The method further includes the steps of determining an additional clock overhead associated with each of the at least two additional requests for access to the memory in conjunction with the first request, determining a combination of requests that can be processed together using an optimized overhead, and processing the combination of requests as a single request with the optimal overhead. An exemplary method according to one embodiment of the invention for generating such fibers utilizes a two-step process in which in an initial step a micrometer sized diameter silica preform fiber is generated, and in a second step, the silica preform is drawn while coupled to a support element to form a nanometer sized diameter silica fiber. Further provided are a solid dry premix suitable as the basis for the adhesive composition, and processes for preparing the solid dry premix, or the adhesive composition, and articles wherein any of these are employed to form an adhesive bond with a substrate. The grating can include a hybrid metal layer including both ohmic and reflective qualities to further improve quantum and conversion efficiency.