Polarizer and preparation method thereof

A polarization device and optical waveguide technology, applied in the field of integrated optics, to achieve the effect of maintaining a stable polarization state and reducing the difficulty of the process

Active Publication Date: 2020-10-02
SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is that when the existing optical polarization device is applied in a large-scale integrated optical circuit, it is necessary to repeatedly prepare a large number of polarization structures to achieve polarization control, resulting in a difficult process.

Method used

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  • Polarizer and preparation method thereof
  • Polarizer and preparation method thereof

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0035] Reference herein to "one embodiment" or "an embodiment" refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present application. In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "top", "bottom" etc. is based on the orientation or positional relationship shown in the drawings, and is only for It ...

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Abstract

The invention relates to the technical field of integrated optics, in particular to a polarizer and a preparation method thereof. The polarizer comprises a supporting layer and a mode screening layer,wherein the supporting layer is used for supporting the mode screening layer; the mode screening layer comprises a light absorption layer and a light isolation layer, wherein the light absorption layer is arranged on the supporting layer, and the light isolation layer is arranged on the light absorption layer; the light absorption layer is used for absorbing light in a preset optical waveguide mode; the light absorption layer can selectively absorb light waves in a TM mode and other high-order modes; and the light isolation layer can limit the absorption degree of the light absorption layer to light wave energy. Control of light polarization by the polarization device is realized by improving the whole circuit substrate; and when optical structures are integrated on a chip on a large scale, the mode screening layer can carry out polarization screening on light waves in all the optical structures, so that a large number of polarization control structures do not need to be repeatedly prepared on a light path, and the process difficulty is reduced.

Description

technical field [0001] The invention relates to the technical field of integrated optics, in particular to a polarizing device and a preparation method thereof. Background technique [0002] The development of information technology has always pursued greater integration and faster information processing speed. In recent years, due to the physical principle of microelectronics technology, it is difficult to continue to improve the size and performance of the basic element transistor. In order to continue to increase the speed of information processing, people think of using another information carrier - photon. Compared with electrons, photons have more stable and controllable modulation and multiplexing dimensions, such as amplitude, phase, wavelength, polarization state, mode, etc., and have larger bandwidth, higher spectrum utilization and communication capacity. Integrated photonics technology, with its advantages of high integration, small size, and compatibility with...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/126G02B6/12G02B6/13
CPCG02B6/12004G02B6/126G02B6/13G02B2006/12085G02B2006/12116G02B2006/12157G02B2006/12166
Inventor 欧欣王成立
Owner SHANGHAI INST OF MICROSYSTEM & INFORMATION TECH CHINESE ACAD OF SCI
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