Low-loss, low-crosstalk, four-port and non-blocking optical router based on micro-ring resonators

Abstract

The invention discloses a low-loss, low-crosstalk, four-port and non-blocking optical router based on micro-ring resonators. A first output optical waveguide is coupled with a first input optical waveguide through a first micro-ring resonator; the first input optical waveguide is coupled with a second output optical waveguide through a second micro-ring resonator; the second output optical waveguide is coupled with a second input optical waveguide through a third micro-ring resonator; the second input optical waveguide is coupled with the first output optical waveguide through a fourth micro-ring resonator; a first straight-through optical waveguide is coupled with the first output optical waveguide through a fifth micro-ring resonator; the first straight-through optical waveguide is coupled with the first input optical waveguide through a sixth micro-ring resonator; a second straight-through optical waveguide is coupled with the second output optical waveguide through a seventh micro-ring resonator; the second straight-through optical waveguide is coupled with the second input optical waveguide through an eighth micro-ring resonator; and the first straight-through optical waveguide is coupled with the second straight-through optical waveguide through a ninth micro-ring resonator.

Description

technical field [0001] The invention relates to the technical field of node interconnection in an on-chip optical interconnection network system, in particular to a four-port non-blocking optical router with low loss and low crosstalk based on a microring resonator. Background technique [0002] The core silicon and cladding silicon dioxide of the silicon-based waveguide have a high refractive index difference, so that the silicon-based waveguide can confine the optical field to the submicron level. Compared with the traditional lithium niobate system, the silicon-based waveguide based The device has a small size, and it is compatible with the traditional CMOS process. The hybrid integration of silicon-based photonic devices and electronic devices on the same chip to complete complex functions has become a research hotspot in recent years. At present, there are many silicon-based photonic devices, such as modulators, filters, reconfigurable differential multiplexers, logic d...

AI Technical Summary

Problems solved by technology

Traditional electrical interconnection has high power consumption, high delay, large signal distortion, and limited bandwidth, which can no longer adapt to this development trend. The solution of using on-chip optical interconnection network is expected to be able to solve this problem well

The router is the core device for building a network. At present, the on-chip optical routers include wavelength routers based on wavelength selection and routers based on dynamic configuration of optical switches. The former has poor scalability, and the number of wavelengths is proportional to the number of communication nodes. The system is complex, and the optical router based on the optical switch has good scalability

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