A silicon-based metamaterial optical star cross-connector and its preparation method
A cross-connector, metamaterial technology, applied in the directions of instruments, light guides, optics, etc., can solve the problems of low integration of optical cross-connectors, and achieve the effect of large working bandwidth and good port consistency
Active Publication Date: 2019-07-23
HUAZHONG UNIV OF SCI & TECH
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[0005] Aiming at the defects of the prior art, the purpose of the present invention is to provide a highly integrated silicon-based metamaterial optical star-line cross-connector, aiming to solve the problem of low integration of the optical cross-connector in the prior art
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[0021] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0022] The invention provides a silicon-based metamaterial optical star cross-connector composed of a sub-wavelength circular pixel array. The connector includes N input waveguides (N≥3 and an integer), N output waveguides, and each input waveguide The waveguide and the corresponding output waveguide are on the same straight line, and the resulting N straight lines intersect each other at the same point, which is named point O; with point O as the center point, there is a regular 2N polygonal coupling region, and its sides and The waveguide is vertical; the pattern of the coupling area is 1 / 2N sect...
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The invention discloses a silicon-based metamaterial optical star cross connector and a preparation method thereof. The connector comprises N input waveguides and N output waveguides, wherein each input waveguide and a corresponding output waveguide are positioned on the same straight line, and the obtained N straight lines cross one another at the same point O; the point O serves as a central point, a coupled region in the regular 2N-gonal shape is formed, and each side of the coupled region is perpendicular to the waveguide; patterns in the coupled region are in a 1 / 2N fan symmetry manner, 2N sector patterns are in axial symmetry, and the symmetry axis is a straight line on which the waveguides perpendicular to the sides are positioned; each sector comprises M circular pixels, and the state of the circular pixels is punched or non-punched. According to the connector disclosed by the invention, cross connection among more than three paths of optical waveguides can be simultaneously realized, and the connector has an extremely small size, that is, has the characteristic of high integration; the operation bandwidth is extremely wide, the port consistency is excellent, the added loss of each port is low, and the crosstalk is small.
Description
technical field [0001] The invention belongs to the field of integrated photonic devices, and more specifically relates to a highly integrated silicon-based metamaterial device for realizing cross-connection of multiple optical waveguides and a preparation method thereof. Background technique [0002] With the exponential growth of global information exchange, the requirements for high-speed and large-capacity communication systems are getting higher and higher. Optical interconnection technology is the most potential way to overcome communication network transmission bottlenecks. At the same time, the high integration of optical devices is becoming the general trend. Silicon-based optical devices are highly integrated and compatible with the CMOS platform, and are receiving more and more attention. How to reduce device size while still maintaining high performance has always been a major challenge in the field of silicon-based photonics. An optical cross-connect is an impo...
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IPC IPC(8): G02B6/125G02B6/12
CPCG02B6/12019G02B6/125
Inventor 张敏明卢鲁璐子周飞亚刘德明
Owner HUAZHONG UNIV OF SCI & TECH