Wavelength Selective Switch and Method of Selecting Wavelength

Abstract

A wavelength selective switch and a wavelength selection method are provided, where the wavelength selective switch includes: a dual-microring resonator, including a first microring (111) and a second microring (112) that are connected in series, where the first microring (111) and the second microring (112) are silicon-based microrings and respectively include one annular PN junction, and a direction of the annular PN junction of the first microring is the same as that of the annular PN junction of the second microring; an electric tuning module (120), where a first electric port of the electric tuning module (120) is connected to a P zone of the first microring (111) and an N zone of the second microring (112), a second electric port of the electric tuning module (120) is connected to an N zone of the first microring (111) and a P zone of the second microring (112), and the electric tuning module (120) is configured to apply bias voltages with reverse directions to the annular PN junction of the first microring 111 and the annular PN junction of the second microring (112); and a thermal tuning module (130), configured to adjust an operating temperature of the dual-microring resonator. The switch is suitable for a high-density integrated optical interconnection.

Description

technical field [0001] The present invention relates to the field of information and communication technology, and more particularly, to a wavelength selective switch and a method for selecting a wavelength. Background technique [0002] The reconfigurable optical branching multiplexing device is one of the core devices in the wavelength division multiplexing optical interconnection system, and the hitless wavelength selective switch is the key component of the device. Non-interference wavelength selective switches in traditional optical communications are mostly based on switching technologies such as Micro-Electro-Mechanical Systems (MEMS), which are large in size and slow in speed, and are not suitable for inter-chip and on-chip optical interconnection wavelength division multiplexing network. Inter-chip, especially on-chip optical interconnection requires small size, high speed, and interference-free wavelength selective switches that are convenient for high-density int...

AI Technical Summary

Problems solved by technology

In addition, the wavelength selective switch of the second-order and fourth-order microring structures based on the five-layer antisymmetrically coupled quantum well series based on InGaAs / InAlAs materials is not compatible with the silicon CMOS process, and the wavelength adjustable range is not large, so it is not suitable for high density Integrated Optical Interconnect

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