The present invention discloses a multiple star wavelength division multiplexing passive optical network system using a wavelength assignment method. The lock box contains an external lock for securing the cabinet through a hasp style locking structure. Each segment extends along the vehicle path of travel and includes one line for each phase of alternating current carried by the segment. Control of the variation of the capacitance allows the desired tuning. Alternatively, the first electro-magnetic radiation andor second electro-magnetic radiation have a spectrum which changes over time.