Three-port asymmetric (three-port ordered-route) light transmission in a linear, time-independent and non-magnetic structure of photonic crystals

Abstract

We show the possibility of three-port asymmetric (three-port ordered-route) light transmission in a linear, time-independent and non-magnetic structure of photonic crystals. A two-dimensional (2-D) hybrid structure of two photonic crystals, one of circular and the other of elliptic dielectric rods in air background with three ports has been considered to demonstrate this possibility. The structure favours optical propagation in the order A→B, B→C, C→A, while, optical propagation in the opposite order (A→C, C→B, B→A) is unfavourable.

Asymmetric light reflection at the reflecting layer incorporated in a linear, time-independent and non-magnetic two-dimensional photonic crystal

“…-PC structures are being explored to achieve optical functionalities which are not possible by any other means. i) Beam propagation without divergence in linear optics regime (self-collimation) [1][2][3], ii) crossing of multiple beams with almost zero cross-talk [4], iii) twoports [5][6][7], three-ports [8] and diffraction-inspired [9] asymmetric light propagation in linear, non-magnetic and time-independent materials are some examples of the functionalities which are shown to be possible with PC structures. Recently, a strong difference between the forward incidence and backward incidence has been shown to be possible for a sole linear, non-magnetic photonic crystals prism [10].…”