1 results about "Faraday rotation angle" patented technology

This application relates to a polarization-maintaining isolator and optical device. The polarization-maintaining isolator includes a first collimator, a first polarizer, a Faraday rotator, a second polarizer, and a second collimator arranged sequentially along the optical path. The transmission axis of the first polarizer is along a first target polarization direction; the Faraday rotation angle of the Faraday rotator is equal to the target angle; the transmission axis of the second polarizer is along a second target polarization direction; the first target polarization direction, after being rotated by the target angle, is aligned with the second target polarization direction; and the second target polarization direction, after being rotated by the target angle, is perpendicular to the first target polarization direction. This application simplifies the device structure and reduces the space occupied by the device, achieving a compact design for the optical isolator.