Adjustable resonant cavity based on flexible surface plasmon coupler, and preparation method thereof
A surface plasmon and plasmon technology, applied in the field of integrated optics, can solve problems such as large bending loss, resonant cavity loss, and unadjustable coupling coefficient, so as to improve Q value, reduce optical radiation loss, and reduce bending The effect of loss
Active Publication Date: 2019-04-12
SOUTHEAST UNIV
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[0005] Purpose of the invention: Aiming at the problems that existing ring resonators composed of surface plasmon waveguides have large bending loss, the loss of the resonator and the coupling coefficient
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[0043] A tunable flexible surface plasmon coupler is prepared by using a flexible organic polymer material, in which the thickness of the core layer is 15nm, the width of the core layer is 6μm, and the thickness of the upper and lower cladding layers is 20μm; it is sheared and separated to obtain a flexible surface plasmon coupler. The element directional coupler, the first flexible plasmonic waveguide and the second flexible plasmonic waveguide; then the left and right ends of the upper flexible waveguide are polished and crimped to form a three-dimensional three-dimensional flexible surface plasmon waveguide. It is better to adjust the coupling coefficient to obtain the adjustable ring resonator based on the flexible surface plasmon coupler of the present invention, and its bending loss is as follows Figure 4 .
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Abstract
The invention discloses an adjustable resonant cavity based on a flexible surface plasmon coupler, and a preparation method thereof. The adjustable resonant cavity comprises a tunable flexible surfaceplasmon coupler formed by an upper branch flexible waveguide and a lower branch flexible waveguide, a flexible surface plasmon directional coupler, a first flexible plasmon waveguide and a second flexible plasmon waveguide located on the lower branch flexible waveguide and used for conducting an optical signal, and a flexible surface plasmon resonant ring formed by coupling and docking two ends of the upper branch flexible waveguide; and the annular surface of the resonant ring is perpendicular to a plane on which the lower branch flexible waveguide is located. The preparation method comprises the steps of preparing the tunable flexible surface plasmon coupler; separating the two left and right ends of the upper branch flexible waveguide and the lower branch flexible waveguide to the flexible surface plasmon directional coupler; and crimping and docking the two ends of the upper branch flexible waveguide so as to form the three-dimensional flexible surface plasmon resonant ring, and obtaining the adjustable resonant cavity. According to the resonant cavity, the bending loss can be reduced, and a Q value is improved.
Description
technical field [0001] The invention relates to an adjustable ring resonant cavity based on a flexible surface plasmon coupler and a preparation method thereof, belonging to the technical field of integrated optics. Background technique [0002] Integrated optical ring resonators are currently one of the most widely used structures in integrated optical functional devices and systems, and are the core sensitive units of many integrated optical functional devices such as ring lasers, filters, optical modulators, and optical switches. In particular, the ring resonator realized by the integrated optical waveguide structure is widely used in many fields such as optical sensing and optical communication due to its advantages of strong localization of the optical field, small mode volume, monolithic integration, and compatibility with traditional CMOS processes. It has a very broad application prospect. Among them, a high quality factor (Quality factor, Q value) is a key paramete...
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Login to view more IPC IPC(8): G02B5/00G02B6/122
CPCG02B5/008G02B6/1226
Inventor 张彤刘怡然唐杰
Owner SOUTHEAST UNIV
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