In an optical modulator directional measurement system embodiment, one or more modulation waves may be measured and directionally discriminated by measuring the modulations of one or more lightwaves. A method can include receiving a request to transmit a digital item to a computing device, transmitting a modified digital item to the computing device, and receiving confirmation that the computing device has received the modified digital item in its entirety. One phase is a metal phase andor \u03b1 phase belonging thereto and another phase is a compound phase consisting of one or several metals of the metal phase and one of the elements N,O,C,B. Another type of compact optical splitter module is a direct-connect splitter module that eliminates the need for an optical fiber array when coupling to external optical fibers. An extension assembly extends between the outlet of the hopper and the spinner assembly conveying the material therebetween. The second end portion defines an inner ridge, a sleeve channel and an outer ridge.