Provided is an optical apparatus and method wherein power transfer coefficients arising from SRS are measured at a designated co-location point and the power of dithers, which are impressed on the channels of a multiplexed optical signal propagating through the optical apparatus, is measured at each co-location point. A handle substrate is then contacted to an exposed surface of the stress inducing material layer. The tool is formed with a body having a through hole, and a funnelform casing formed at a bottom end of the through hole for aligning and guiding the semiconductor package into the electrical connector. The electric field acts on the excess charge in the solution causing the fluid to flow. When the lookup is completed successfully, the Home Agent sends the IP address allocated to the Mobile Node in the name lookup process to the device requesting the lookup.