Mach-Zehnder broadband low-power-consumption optical switch based on multistage micro-disc coupling

Abstract

The invention discloses a Mach-Zehnder broadband low-power-consumption optical switch based on multistage micro-disc coupling. The Mach-Zehnder broadband low-power-consumption optical switch has the advantages of being wide in working bandwidth, compact in structure and low in power consumption. By cascading a plurality of micro-disc resonators, the resonant wavelength of each micro-disc resonatoris respectively adjusted, so that the resonant wavelengths of the micro-disc resonators are close to each other and combined, the spectral response bandwidth is effectively improved, and the workingbandwidth of the optical switch is improved. The phase difference of optical signals transmitted by two interference arms is pi by adjusting the refractive indexes of the micro-disk resonators coupledwith the two interference arms, so that the straight-through state of the optical switch is realized; the phase difference of the optical signals transmitted by the two interference arms is 0, so that the cross state of the optical switch is realized; compared with an optical switch formed by a Mach-Zehnder resonator or a micro-ring resonator, the micro-disc resonator has the remarkable advantageof smaller size due to only one outer side surface, so that the power consumption of the optical switch can be remarkably reduced, and the structure is more compact.

Description

technical field [0001] The invention belongs to the technical field of integrated optoelectronic devices, in particular to a Mach-Zehnder broadband low-power optical switch based on multi-level microdisk coupling. Background technique [0002] With the rapid development of information services such as big data, cloud computing, Internet of Things, and 5G, traditional electronic switching technologies can no longer meet the needs of network bandwidth development. Realizing information exchange in the optical domain based on optical technology, that is, optical switching technology, has the advantages of high speed, broadband, and low power consumption, and is a key technology for realizing future large-capacity data exchange all-optical networks. As the core device of optical switching technology, optical switch realizes fast switching of optical signals. At present, optical switches based on discrete devices have problems in insertion loss, volume, power consumption, and re...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the working bandwidth of the optical switch based on Mach-Zehnder interference is large, but the size of the optical switch device is large, and the power consumption required for the conversion of the working state is large, which is not conducive to the integration of large-scale switch arrays.

The optical switch device based on the microring resonant structure is small in size and low in power consumption, but its operating bandwidth is much smaller than that of the Mach-Zehnder optical switch

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