Some of the most common optical passive components include optical couplers, optical splitters, optical filters, optical connectors, optical attenuators, optical circulators, optical isolators, optical switches, and optical add/drop multiplexers. Optical switches are photonic devices that control the flow of light. At their simplest, they operate as on/off gates, allowing light to pass with low insertion loss in the open state and blocking transmission (causing high insertion loss) when closed. However, more advanced devices can route one. Manage your optical devices, switches and applications. VIAVI also offers a range of passive optical devices, such as. A passive optical network (PON) or Gigabit Passive Optical Network (GPON) is a point-to-multipoint (P2MP) network that uses a combination of active transmission equipments and passive cable components to provide network connectivity to end user's devices. In essence, a PON is a fiber-optic system that delivers data from a single source to multiple endpoints using only. Optics engineering focuses on transmitting data using light, a method providing the high speeds and vast bandwidth necessary for modern digital life. Passive optical components play a fundamental role within this infrastructure.