Double-input and double-output optical switch based on defective nonlinear photonic lattice

Abstract

The invention provides a double-input and double-out optical switch based on a defective nonlinear photonic lattice, which comprises a first waveguide layer and a second waveguide layer, wherein the first waveguide layer is arranged on the second waveguide layer; the first waveguide layer includes (N+m) waveguides, N waveguides with the serial numbers being v1 to vN are nonlinear waveguides, the (N+m) waveguides are arranged on the same horizontal plane, and m is a positive integer; the second waveguide layer includes (N-1) waveguides, and the (N-1) waveguides are arranged on the same horizontal plane; the linear waveguide with the serial number being u1 has a positive defect, the linear waveguide with the serial number being u<N-1> has a negative defect; and the double-input and double-output optical switch further comprises two input ports and two output ports. The double-input and double-output optical switch has nonlinear dependent optical switch transmittance, different light intensities of the different input ends have different light transmission states, the interruption of an optical path can be flexibly controlled, and optical path protection in the case of high input light intensity can be realized.

Description

technical field [0001] The invention belongs to the field of optical communication and optical logic calculation, and relates to an optical switch, in particular to a double-input double-output optical switch based on a defect-containing nonlinear photon lattice. Background technique [0002] With the continuous improvement of traditional integration processes, transistor circuits are gradually approaching the physical limit, and Moore's Law will no longer apply. Replacing electrical signals with optical signals has become a new way to develop integrated technology, and all-optical switches play an important role in optical computing and optical information processing. [0003] Traditional mechanical optical switches are bulky and difficult to integrate, and have a slow response speed; although microelectronic optical switches have good process compatibility, they have large insertion loss, unstable switches, and response speeds of only on the order of microseconds. With th...

AI Technical Summary

Problems solved by technology

[0004] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a dual-input dual-output optical switch based on a defect-containing nonlinear photonic lattice, which solves the problem of high-power The problem that the optical signal of the concentration causes damage to the optical device

Images