An Efficient and Compact Mach-Zehnder Optical Switch Structure

Abstract

The invention discloses an efficient and compact Mach-Zehnder optical switch structure, and belongs to the field of integrated optics. The efficient and compact Mach-Zehnder optical switch structure comprises an input waveguide I (1), an input waveguide II (2), an output waveguide I (9) and an output waveguide II (10). The input waveguide I (1) and the input waveguide II (2) are perpendicularly crossed with each other to form a crossed structure, a light splitting micro-nano groove (3) is etched at a joint of the input waveguide I (1) and the input waveguide II (2), two adjacent ends of the input waveguides are used as an input end I (1a) and an input end II (2a) of an optical switch, and two other ends of the input waveguides are used as output ends which are respectively connected with one end of an L-shaped reference arm (5) and one end of an L-shaped phase shift arm (6); the output waveguide I (9) and the output waveguide II (10) are perpendicularly crossed with each other to form another crossed structure, a light combining micro-nano groove (8) is etched at a joint of the output waveguide I (9) and the output waveguide II (10), two adjacent ends of the output waveguides in the other crossed structure are used as an output end I (9b) and an output end II (10b) of the optical switch, and two other ends of the output waveguides are used as input ends which are respectively connected with the other end of the L-shaped reference arm (5) and the other end of the L-shaped phase shift arm (6). The efficient and compact Mach-Zehnder optical switch structure has the advantages that the efficient and compact Mach-Zehnder optical switch structure is compact, arrangement and configuration of devices are facilitated, and the devices can be easily expanded and integrated two-dimensionally.

Description

technical field [0001] The invention relates to an optical switch device, in particular to an efficient and compact Mach-Zehnder optical switch structure, which belongs to the field of integrated optics. Background technique [0002] Optical switches are key devices for realizing optical transmission path conversion, and are widely used in routing / wavelength selection at the optical link layer, optical cross-connectors, optical add-drop multiplexers, optical network monitoring, and on-chip optical interconnection. The new generation of devices is characterized by their increased performance in the optical domain and the integration of multiple functions. Large-scale switch arrays based on photonic integration technology are the core components of optical network nodes to realize optical cross-connects and optical add-drop multiplexers, and are usually formed by cascading 2×2 optical switch units in a certain topology. At the same time, optical switching devices are also wid...

AI Technical Summary

Problems solved by technology

However, the optical switch with the above structure generally has the problem that the monolithic size occupied is large or the scale in the one-dimensional direction is still long, at least in the order of millimeters, which is not conducive to improving the discrete components in the photonic circuit chip or on-chip optical interconnection system. of integrations

At the same time, power consumption and response time are mutually restricted, which is not conducive to the integration of two-dimensional optical switch arrays

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