Single-mode half microdisk resonant cavity

Abstract

The invention relates to a single-mode half microdisk resonant cavity which comprises a closed inner contour line and a closed outer contour line. A waveguide (3) is arranged between the inner contour line and the outer contour line. The inner contour line is composed of sector connecting areas (2) used for being in electrical connection or mechanical connection and a transition curve (1) which achieves the purpose that the waveguide width is gradually changed from narrow to wide, and the angle of each sector connecting area (2) is smaller than or equal to 270 degrees and larger than zero degree. Each connecting area (2) maximally allows a connecting structure within the range of 270 degrees, so that connecting resistance is small, and high-speed resonance can be achieved. The transition curve (1) can guarantee the fact that a high order mode and a leakage mode are not excited while enabling the waveguide of the resonant cavity to be gradually widened, and cavity loss is lowered. The half microdisk resonant cavity is in a single-mode work mode, the range of free spectrum can not be reduced, the strict demand for a light field mode of application such as filtering and modulation can be met, the half microdisk resonant cavity has multiple potential purposes in an integrated field and comprises a low energy consumption and high speed electrooptical modulator, an optical logic operation device, an active power filter, a heating / tuning unit, a thermo-optic switch, an electrical / mechanical / optical transducer and the like which need electrical or mechanical connection.

Description

technical field [0001] The invention relates to the technical field of integrated optoelectronics, in particular to a resonant cavity. Background technique [0002] Active microring resonators are important components in integrated optoelectronics and have a wide range of uses, covering filtering, modulation, logic operations, sensing, thermo-optic switches, tuning, etc. crucial position. However, the electrical connection of the active microring resonator is not easy to realize, because the heavily doped connection structure will cause considerable optical field loss and greatly reduce the performance of the device, which hinders the further development of the active microring resonator to miniaturization and high performance. one of the main difficulties. On the other hand, some resonators require mechanical connection structures to realize the interaction between light waves and mechanical waves, which urgently requires new resonator devices that can achieve low-loss me...

AI Technical Summary

Problems solved by technology

However, the connection range of this structure is too small, resulting in a large connection resistance, and the speed is restricted by the RC constant, that is, the product of resistance and capacitance. Therefore, if the resistance is large, it is difficult to achieve high-speed response

This defect is restricted by the structure of the resonant cavity, and it is difficult to significantly improve

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