A Mach-Zehnder broadband low-power optical switch based on multi-stage microdisk coupling

Abstract

The invention discloses a Mach-Zehnder broadband low-power optical switch based on multi-level microdisk coupling, which has the characteristics of wide operating bandwidth, compact structure and low power consumption; by cascading multiple microdisk resonators, each The resonant wavelengths of the microdisk resonators make the resonant wavelengths of the microdisk resonators close to each other and merge, thereby effectively improving the spectral response bandwidth and improving the working bandwidth of the optical switch. By adjusting the refractive index of the microdisk resonator coupled with the two interference arms, the phase difference of the optical signal transmitted through the two interference arms is π, realizing the straight-through state of the optical switch; the phase difference of the optical signal transmitted through the two interference arms is 0, realizing Crossover state of optical switches; Compared with optical switches composed of Mach-Zehnder or microring resonators, microdisk resonators have the significant advantage of having a smaller size due to only one outer surface, which can significantly reduce the power consumption of optical switches and have a more compact structure .

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 have been unable to meet the needs of network bandwidth development. The realization of 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 the key technology for realizing large-capacity data exchange all-optical networks in the future. 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 terms of insertion loss, ...

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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