LIGHT ISOLATOR

摘要

PURPOSE:To provide a light isolator which can prevent isolation decrease with no dependency on a wavelength of incident light. CONSTITUTION:Since wavelength dependency is negated each other with a Faraday rotor 3 in which a direction of rotation of a polarization direction is determined by not an incident direction of incident light but only an applied magnetic field by providing a polarization rotor 2 of reversing the direction of rotation of the polarization direction in accordance with the incident direction of the incident light, the wavelength dependency as a light isolator can be eliminated, and isolation decrease as the light isolator can be prevented.