Non crosspoint space type integrated optics multi-ring ring shaped resonant cavity

Abstract

The invention discloses a space-type integrated optical multi-circle ring resonant cavity without intersection. It connects the input waveguide and the output waveguide through a planar coupler, and the planar single-turn ring cavity is connected with the planar coupler to form a planar integrated optical racetrack ring resonator; four vertical S-curved waveguides and two The planar single-circle ring resonators are connected; the four vertical S-curved waveguides are connected through a vertical directional coupler to form a space-type integrated optical two-circle ring resonator without intersections. On this basis, after connecting the vertical S-bend waveguide with the planar single-turn ring cavity, the vertical S-bend waveguide is connected layer by layer with a vertical directional coupler to obtain a space-type integrated optical multi-turn ring resonator without intersections. The invention increases the total cavity length of the annular cavity, improves the limit sensitivity of the resonant micro optical gyroscope; avoids the crosstalk and loss of the intersecting waveguide structure in the planar multi-circle annular cavity; reduces the interference and the two-way transmission of light waves in the annular cavity noise.

Description

technical field [0001] The invention relates to a space-type integrated optical multi-circle ring resonant cavity without intersection. Background technique [0002] The waveguide-type integrated optical ring resonator is the core sensitive part of the resonant micro-optical gyroscope. Its performance directly affects the limit resolution and various errors of this gyroscope, and is the key to the design and manufacture of this gyroscope. Although the scale factor of the resonant micro optical gyroscope is only related to the equivalent radius of the ring resonant cavity, however, if the loss is allowed, the limit resolution of the resonant micro optical gyroscope can be improved by appropriately increasing the total length of the ring resonant cavity. rate and improve signal stability. Therefore, under a certain size of the integrated optical chip, it is necessary to study the multi-turn technology of the integrated optical ring cavity. [0003] In the integrated optical ...

AI Technical Summary

Problems solved by technology

Light waves will produce diffraction effects at these intersection points, and most of the diffracted light will escape from the optical waveguide and become the loss of the ring cavity, reducing the definition of the ring cavity, thereby affecting the resolution of the resonant micro optical gyroscope

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