This design guide details cable routing best practices for fiber optic Perimeter Intrusion Detection Systems, emphasizing tradeoffs in burial depth, fence attachment, zoning, and integration to minimize false alarms and maximize coverage. The practices contained herein are designed as a guide for use by persons having technical skill at their own discretion and risk. Panduit does not guarantee any favorable results or assume any liability in connection with this document. This guide provides a comprehensive overview of industry. Fiber optic cables transmit data as light pulses through a core, offering bandwidths up to 400 Gbps via wavelength-division multiplexing (WDM).