WOSN includes optical passive and active components, digital signal processor, and RF communication. Tapping method is used to monitor the optical signals entering to customers receiver. Experiment was carried out to get the parameters of optical passive components. Based on the experiments, this system only involves 4 dB insertion loss and is able to detect optical signal. Since the insertion loss of this system
is very low, we can use it as a connector in the FTTH system.