Integratable high-bandwidth electro-optic modulator based on surface plasmons
A technology of surface plasmon and electro-optical modulators, which is applied in instruments, optics, nonlinear optics, etc., can solve the problems of high energy consumption, low modulation efficiency, narrow modulation bandwidth, etc., and achieve low energy consumption, increase modulation rate, increase The effect of large bandwidth
Active Publication Date: 2021-04-13
NO 24 RES INST OF CETC
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[0003] The present invention provides an integrated high-bandwidth electro-optic modulator based on surface plasmons to solve the problems of large energy consumption, narrow modulation bandwidth and low modulation efficiency in current electro-optic modulators
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[0019] In order to enable those skilled in the art to better understand the technical solutions in the embodiments of the present invention, and to make the above-mentioned purposes, features and advantages of the embodiments of the present invention more obvious and understandable, the following describes the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings For further detailed explanation.
[0020] In the description of the present invention, unless otherwise specified and limited, it should be noted that the term "connection" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be Directly connected or indirectly connected through an intermediary, those skilled in the art can understand the specific meanings of the above terms according to specific situations.
[0021] see figure 1 , is a ...
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The invention provides an integrated high-bandwidth electro-optical modulator based on surface plasmons, which includes a substrate layer, on which a first metal nano-strip, a second metal nano-strip and a third metal nano-strip parallel to each other are arranged , at least the first slit between the first metal nanostrip and the second metal nanostrip and the second slit between the second metal nanostrip and the third metal nanostrip are filled with an electro-optic polymer layer; the input waveguide The input optical signal is transmitted to the first slit and the second slit, and the surface plasmon is excited, and the surface plasmon propagates along the interface between the metal nanocomposite and the electro-optic polymer layer, and the electrical signal is applied After reaching the electro-optic polymer layer, the effective refractive index of the interface changes, thereby changing the propagation conditions of the surface plasmon, and correspondingly, the optical signal coupled by the surface plasmon to the output waveguide also changes, thereby achieving high-speed and high-speed Broadband electro-optic modulation.
Description
technical field [0001] The invention belongs to the field of electro-optic modulation, in particular to an electro-optic modulator with high bandwidth that can be integrated based on surface plasmons. Background technique [0002] Optoelectronic devices such as optical analog-to-digital converters cannot be applied on a large scale due to reasons such as large size and power consumption, and research on their small-scale microsystems is required. The integration of optoelectronic systems is the integration of discrete devices, so it is necessary to study the design and fabrication of each discrete device. In the current optical analog-to-digital converter system, the electro-optic modulator is usually a silicon-based photonic device, which modulates the optical signal based on the silicon-based free carrier dispersion effect, but is affected by the carrier effect. The driving power of the electro-optical modulator is relatively large, often requiring hundreds of milliwatts,...
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IPC IPC(8): G02F1/065
Inventor 袁浚张正平徐代果付东兵
Owner NO 24 RES INST OF CETC