Spot size converter based on long-period grating

A technology of long-period gratings and mode-spot converters, which can be used in light guides, optics, instruments, etc., and can solve problems such as high technical cost, difficult production, and poor long-term stability

Active Publication Date: 2021-09-10
UNIV OF ELECTRONIC SCI & TECH OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003]Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a mode speckle converter based on a long-period grating to solve the trad

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  • Spot size converter based on long-period grating
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  • Spot size converter based on long-period grating

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Embodiment Construction

[0028] The specific embodiments of the present invention are described below so that those skilled in the art can understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments. For those of ordinary skill in the art, as long as various changes Within the spirit and scope of the present invention defined and determined by the appended claims, these changes are obvious, and all inventions and creations using the concept of the present invention are included in the protection list.

[0029] Such as figure 1 As shown, a mode speckle converter based on a long-period grating includes: a substrate 1, a buffer layer 2, a high-refractive index waveguide core 3, a long-period grating 4 and a low-refractive index upper cladding strip waveguide 5;

[0030] One side of the buffer layer 2 is fixedly connected to the substrate 1, and the other opposite surface thereof is fixedly connected to one side of the high-re...

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Abstract

The invention discloses a spot size converter based on a long-period grating. The spot size converter is applied to the field of optical communication and optical waveguide devices, realizes the conversion of the spot size of an optical wave mode, and comprises a substrate, a buffer layer, a high-refractive-index waveguide core, the long-period grating and a low-refractive-index upper cladding strip waveguide, wherein one surface of the buffer layer is fixedly connected with the substrate, and the other opposite surface of the buffer layer is fixedly connected with one surface of the high-refractive-index waveguide core; the other opposite surface of the high-refractive-index waveguide core is used for etching to obtain the long-period grating; and the other opposite surface of the high-refractive-index waveguide core and the long-period grating are fixedly connected with the low-refractive-index upper cladding strip waveguide. According to the invention, the problems of complex structure, high manufacturing difficulty, high technical cost and poor long-term stability of a traditional nanometer photonic waveguide end face coupling spot size converter are solved.

Description

technical field [0001] The invention relates to the fields of optical communication and optical waveguide devices, in particular to a mode-spot converter based on a long-period grating. Background technique [0002] Optical communication technology provides strong technical support for the construction of an information society, and optical waveguide devices are essential core components for the realization of optical communication technology. , more flexible, and more reliable technological evolution plays a crucial role. In the past 10 years, silicon photonics technology and lithium niobate thin film photonics technology are regarded as two key technologies to promote the further development of optical communication technology. However, the size of the waveguides of the above two photonic chips is small, and the thickness and width of the waveguides are usually less than 1 micron, which are often called micro-nano waveguides. When these photonic chips are packaged, the l...

Claims

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Application Information

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IPC IPC(8): G02B6/14G02B6/124
CPCG02B6/14G02B6/124G02B2006/12097
Inventor 陈开鑫邓佳瑶余夏蓉王梦柯
Owner UNIV OF ELECTRONIC SCI & TECH OF CHINA
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