ANC offers fiber pigtailed Isolators which are passive, fiber-pigtailed devices. It reduces back reflections and backscattering of light that is highly desirable in many laser applications.
Fiber optic circulators act as signal routers, transmitting light from an input fiber to an output fiber, but directing light that returns along that output fiber to a third port. They perform a similar function as an isolator, protecting the input fiber from return power, but also allowing the rejected light to be employed.
Optical switch is a switch that enables signals in optical fibers or integrated optical circuits (IOCs) to be selectively switched from one circuit to another. It is widely used in optical switching, configuration optical add/drop multiplexer (OADM), optical fiber ring protection and optical cross and connection system.