Patent ID: 8983247
Filing Date: 2015-03-17
Classification: G02B,G02F

Abstract:
1. An electromagnetic wave isolator ( 10 ) comprising a body ( 29 ) having a given symmetry and defining two directions (D 1 , D 2 ) of electromagnetic wave propagation, wherein the isolator further comprises one or more feature ( 21 , 22 ) configured to lower the symmetry of the body, such that wave propagation is supported substantially more in one (D 1 ) of the directions than in the other of the directions (D 2 ), wherein the body ( 29 ) defines a loop, the two directions (D 1 , D 2 ) being two opposite circular directions (D 1 , D 2 ) corresponding to that loop, and the feature is further configured such that the isolator is chiral in the plane containing the largest common section of the body and the feature.