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Two-dimensional distributed array waveguide grating

An arrayed waveguide grating and two-dimensional distribution technology, which is applied in the field of two-dimensional distributed arrayed waveguide gratings, can solve the problems of limitation, limited to optical waveguide devices, etc., and achieve the effect of easy realization of two-dimensional characteristic control.

Inactive Publication Date: 2004-04-14
ZHEJIANG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

However, this technology is limited to planar integration and is limited to the application of optical waveguide devices

Method used

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  • Two-dimensional distributed array waveguide grating
  • Two-dimensional distributed array waveguide grating
  • Two-dimensional distributed array waveguide grating

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Embodiment Construction

[0018] Such as image 3 As shown, the present invention consists of a certain number of optical waveguides placed together to form a two-dimensional distributed optical waveguide array grating 6; the number of optical waveguides is determined by the diffraction accuracy requirements and functional characteristics of the diffraction grating; the two end faces of these waveguides respectively constitute Two input end faces (output end faces) 7 and output end faces (input end faces) 8 of two diffraction gratings with two-dimensional distribution; each optical waveguide has a certain optical path size, and the optical path size is determined according to the corresponding diffraction The position phase on the end face of the grating is required to be set.

[0019] The optical waveguide can be a rectangular optical waveguide 10 (such as Figure 4 As shown in a), the formed optical waveguide array is made by multi-layer planar waveguide technology, and each layer is composed of a c...

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Abstract

2D optic waveguide array is composed of certain amount of optic waveguides put together. Quantity of optic waveguides is dependent on requirement of diffraction accuracy and functional performance. Two end surfaces of these waveguides constitute the input end face and output end face of the 2D diffraction grating. Each optic waveguide possesses a certain amount of optical path setup based on requirement of positional phase corresponding to position on the end face of the diffraction grating. 2D optic waveguide array is composed of rectangle waveguide, ridge waveguide, strip type waveguide or optical fiber. The end face of grating can be in plate structure, concave surface structure and convex surface structure. Based on optic waveguide technique, the invention realizes 2D diffraction grating easily with controllable phase and intensity in 2D.

Description

Technical field [0001] The invention relates to an optical component, in particular to a two-dimensional distribution array waveguide grating. Background technique [0002] Diffraction grating is a basic optical functional element. Due to the limitation of the means of realization, the current practical diffraction grating 1 is all one-dimensional (such as figure 1 As shown), it completes the diffraction function through the setting of the reflective grating groove 2 of the diffraction grating, and is mainly used in optical spectrum analysis. A diffraction grating with two-dimensional phase distribution can be produced by using high-precision microfabrication methods. However, compared with the one-dimensional diffraction grating, the two-dimensional diffraction grating with fixed phase distribution does not have unique functions or superior characteristics, so the two-dimensional diffraction grating based on this technology is not practical. [0003] In 1989, Dutchman Sm...

Claims

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Application Information

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IPC IPC(8): G02B6/124
Inventor 杨建义江晓清李锡华王明华
Owner ZHEJIANG UNIV