From multi-level laser amplifier, ring laser to the optical modulator, the Faraday rotator and isolator is a key component in a wide range of devices used in diverse verticals today. It plays a vital role in how these devices perform.
The Faraday rotator is a polarization rotator that works on the Faraday Effect, and this is a reason the component is called Faraday rotator. The component also based on magnetic effect.