Dual-input dual-output optical switch based on defect-containing nonlinear photonic lattice

Abstract

The invention provides a dual-input dual-output optical switch based on a defective nonlinear photonic lattice, which includes a first waveguide layer and a second waveguide layer. The first waveguide layer is arranged on the upper part of the second waveguide layer; the first waveguide layer includes Including N+m waveguides, where the serial number is v 1 to v N The N waveguides are nonlinear waveguides, and N+m waveguides are arranged on the same horizontal plane, where m is a positive integer; the second waveguide layer includes N-1 linear waveguides, and the N-1 linear waveguides are arranged on the same horizontal plane Above; where the serial number is u 1 The linear waveguide has a positive defect, numbered u N‑1 The linear waveguide has a negative defect; the dual-input dual-output optical switch also includes two input ports and two output ports. The invention has a non-linearly dependent optical switch transmittance. Different light intensities at different input ends have different light-passing states, can flexibly regulate the opening and closing of the light path, and can realize light path protection under high input light intensity.

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...

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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

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