A Reconfigurable Optical Filter Based on Microring Array

Abstract

The invention discloses a reconfigurable optical filter based on a microring array, which belongs to the technical field of optical fiber communication and integrated photonics. The filter includes a first bus waveguide, a second bus waveguide and a plurality of microrings; the first bus waveguide A plurality of microrings are connected in parallel with the second bus waveguide; a plurality of microrings are equidistantly arranged between the first bus waveguide and the second bus waveguide; a coupling area is provided between the microring and the first bus waveguide; the microring A coupling area is set between the second bus waveguide; a coupling area is set between adjacent microrings; each coupling area is equipped with a reconfigurable optical coupler, and the switch state of the reconfigurable optical coupler can be independently adjusted . The present invention introduces an optocoupler structure with reconfigurable switching state in the coupling area of ​​the microring array, which can independently control whether the coupling effect occurs in each coupling area, and then combine the switching states of each coupling area by design, and can be used in one-dimensional micro A variety of topological structures are implemented in the ring array, which realizes the diversity of filtering functions.

Description

Technical field [0001] The present invention pertains to fiber optic communications and integrated photonics technology, and more particularly, to a reconfigurable array based on micro-optical filter ring. Background technique [0002] Optical communications is one of modern information and transmission of the most important ways, we are moving towards ultra high-speed, high-capacity, high-speed, long-distance, low-cost direction. For full use of the optical wavelength filter optical network resources, the network protection system to maximize unobstructed channel plays an important role, is the all-optical signal processing and WDM systems important device. Micro loop filter is an optical filter. Passive microring, such as silicon, silicon micro-ring filter using the amplitude response of the microring optical signal and phase response characteristics processing, and filtering; using thermo-optic effect, the plasma dispersion effect and the like, can realize good center frequenc...

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a reconfigurable filter based on a microring array, the purpose of which is to introduce an optical coupler structure with reconfigurable switching states in the coupling region of the microring array , can independently control whether the coupling effect occurs in each coupling area, and then design and combine the switching states of each coupling area, thereby solving the technical problem of single filtering function of the filter based on the micro-ring structure

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