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An arrayed waveguide grating with spiral bend waveguide

A technology of arrayed waveguide grating and curved waveguide, which is applied to the coupling of optical waveguides and other directions, can solve the problems of large device size and small decoupling spacing of silicon nano-optical waveguides, and achieve the effect of large optical path difference and increased design freedom.

Inactive Publication Date: 2008-09-03
ZHEJIANG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Therefore, if the traditional arrayed waveguide grating structure is adopted, the characteristics and advantages of the small decoupling spacing of the silicon nano-optical waveguide cannot be fully utilized.
Despite the small bending radius of silicon nano-optical waveguides, the overall device size is still relatively large

Method used

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  • An arrayed waveguide grating with spiral bend waveguide
  • An arrayed waveguide grating with spiral bend waveguide

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Embodiment Construction

[0015] refer to figure 1 , an arrayed waveguide grating with a helical structure includes an input free propagation region 2 connected to an input waveguide 1 and an output free propagation region 12 connected to an output waveguide 13. In the illustrated example, the input free propagation region 2 and the output free propagation region 12 overlap. A waveguide array is connected between the input free propagation area 2 and the output free propagation area 12, and each array waveguide includes four straight waveguides 3, 5, 9, 11, two curved waveguides 4, 10 and a spiral curved waveguide 14; One end of the straight waveguide 3 is connected to the output end of the input free propagation area 2, and the other end of the first straight waveguide 3 passes through the first curved waveguide 4, the second straight waveguide 5, the spiral curved waveguide 14, the third straight waveguide 9, The second curved waveguide 10 is connected to one end of the fourth straight waveguide 11 ...

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Abstract

The invention discloses an array waveguide grating with helical bend waveguides, the input free transmission area and the output free transmission area are connected by the waveguide array which contains two schemes. One is: each array waveguide consists of a helical bend waveguide, multistage straight waveguides and multistage bend waveguides; the other is: the first array waveguide consists of multistage straight waveguides and multistage bend waveguides, and the others consist of a helical bend waveguide, multistage straight waveguides and multistage bend waveguides. In the invention, the helical bend waveguides are introduced in array waveguide, and that extends the design freedom, and makes the shape of AWG smaller.

Description

technical field [0001] The invention relates to the field of nanometer optical waveguide integration, in particular to an arrayed waveguide grating with a helically curved waveguide. Background technique [0002] Si and SiO 2 The high refractive difference (2.0) provides the possibility to realize nano-optical waveguides and ultra-small-scale integrated optical waveguide devices, and there have been many related research reports. Ultra-small-scale optical devices based on nanowaveguides are becoming more and more attractive. Arrayed waveguide grating (AWG) is the most representative integrated optical waveguide device, which has superior performance and wide application. It is a wavelength router, multi-wavelength receiver, multi-wavelength laser, add-drop multiplexer, etc. The core device in the optical communication module. Arrayed waveguide gratings can be used not only as wavelength division (de)multiplexing devices, but also as wavelength routers, comb filters, etc. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/34
Inventor 戴道锌何赛灵
Owner ZHEJIANG UNIV
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