Tunable light wave guide dispersion compensator controlled by two-section erverse electrode oriented coupler

Abstract

The invention discloses a regulatable optical waveguide dispersion compensator controlled by binodal reverse-electrode orientation coupler, arranging parallel I / O optical waveguides in a part of the closed-loop optical waveguide microring to compose an orientation coupler, where the effective length of the orientation coupler is once to thrice as long as its coupled length and is a length influencing the coupling in the graded separation, two driving electrodes of the same length are arranged on the orientation coupler and reversely arranged on two waveguides composing the orientation coupler, thus composing the binodal reverse-electrode structural 2x2 input controllable orientation coupler. This structural regulable coupling mechanism can realize regulable coupling in the whole range and can have a bending shape, and even for a circular optical microring, it need not adopt special structure processing, thus unable to enlarge the circumference of the optical microring. This brings about extreme flexibility to the design and besides, it has extreme flexibility in designing and realizing multiple-stage cascade.

Description

technical field [0001] The invention relates to optical components, in particular to an adjustable optical waveguide dispersion compensator. Background technique [0002] With the increase of the communication rate in optical communication, the dispersion in the optical fiber has become the main factor limiting the optical transmission distance. Therefore, it has become extremely important to compensate the dispersion of the light wave transmitted in the optical fiber. At present, many optical dispersion compensation schemes have been proposed, among which the integrated optical waveguide optical dispersion compensator with optical microring structure based on the principle of all-pass filter is a very promising scheme. [0003] The optical waveguide dispersion compensator using the optical microring structure needs to have the input / output coupling control mechanism of the optical microring to realize the adjustable dispersion compensation function. Mai Desheng and others ...

AI Technical Summary

Problems solved by technology

Mai Desheng and others of Bell Labs in the United States have obtained the coupling control by using the 2×2 Mach-Zehnder interference structure, but due to the limitation on the mechanism, there are limitations in the realization of the coupling coefficient, and, due to the structural requirements, the perimeter of the entire optical microring has to be increased, which is not conducive to the application

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