Time division multiplexing (or more specifically optical time division multiplexing, OTDM) is a technique used in optical data transmission where several optical signals are combined by temporal interleaving, transmitted together, and later separated again based on different arrival. Time division multiplexing (or more specifically optical time division multiplexing, OTDM) is a technique used in optical data transmission where several optical signals are combined by temporal interleaving, transmitted together, and later separated again based on different arrival. The All-Fiber Optical Current Transformer (FOCT), leveraging its unique advantages, is in the process of supplanting traditional current transformers to become the core component of power system monitoring equipment. Currently, to achieve higher precision and stability in magnetic field or current. Dynamic range, the ratio of maximum detectable amplitude, and the noise level, are of great importance in characterizing the performance of an interferometric fiber-optic sensor (IFOS). Here we analyze the dependence of dynamic range on carrier frequency and repetition frequency in a. Intensity modulation, induced by a modified microbending pressure sensor is considered as a possible transduction mechanism for detecting environmental changes. The low insertion loss and the high multiplexing capability of the proposed sensor network were investigated through both theoretical analysis and experimental study. In the context of optical sensors, TDM enables the simultaneous measurement of multiple parameters, such as temperature, strain.