Excellent Polarization-Maintaining Products, Locking in Stable Optical Signals without Deviation

Polarization maintaining isolator is an optical isolator made of polarization maintaining fiber, which is a passive optical device that only allows unidirectional light to pass through. Its working principle is based on the non reciprocity of Faraday rotation.

For forward incident signal light, it becomes linearly polarized light after passing through a polarizer. The Faraday spin magnetic medium, together with an external magnetic field, rotates the polarization direction of the signal light to the right by 45 degrees, and precisely passes it through a polarizer placed at a 45 degree angle to the polarizer with low loss; For reverse light, when the linearly polarized light from the polarizer passes through the placed medium, the deflection direction also rotates 45 degrees to the right, so the polarization direction of the reverse light is orthogonal to the polarizer direction, completely blocking the transmission of reflected light.

Optical isolators are commonly used in fiber optic communication systems and precision optical measurement systems. State path communication can provide polarization maintaining fiber isolators in the 1030nm, 1064nm, 1310nm, and 1550nm bands, with characteristics such as low insertion loss, high isolation, high return loss, and high extinction ratio.