The Aerobic Treatment Plant with Filter Pipe processes sewage for buildings not connected to a municipal sewer system. The OCT implementation generally applies to both spectrometer-based and swept source-based implementations of PS-FD-OCT, and also to both fiber based and bulk-optical and Michelson and Mach-Zender PS-OCT implementations, where the detection arm is free from two photoreceivers or spectrometers for detecting the interference of the first polarization state and the second polarization state. The authentication component provides several authentication mechanisms which may be selected by information contained in the client’s request. A third dielectric layer is then formed over the substrate to cover the first dielectric layer, the charge storage spacers and second dielectric layer.