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Optical waveguide pulse coupler and manufacturing method thereof

A pulse-coupling, optical waveguide technology used in the field of integrated optics and optical waveguides

Inactive Publication Date: 2015-06-10
UNIV OF SHANGHAI FOR SCI & TECH
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  • Abstract
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Problems solved by technology

The work results of realizing the pulse-coupled dynamic process required by PCNN by using the all-optical method have not been reported so far

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  • Optical waveguide pulse coupler and manufacturing method thereof
  • Optical waveguide pulse coupler and manufacturing method thereof
  • Optical waveguide pulse coupler and manufacturing method thereof

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Embodiment Construction

[0031] The basic structure of the core optical path of the optical waveguide pulse coupler is as follows: figure 1 As shown, it consists of an inverted Y-branch waveguide 4 and two composite waveguides 5 symmetrically prepared at the two branch positions of the inverted Y-branch waveguide 4. The inverted Y-branch waveguide 4 is prepared on the upper surface of a glass substrate. The glass substrate can be glass such as B270, or optical glass such as BK7 or K9. The Y-branch waveguide 4 consists of two input straight waveguides 4-1 with a length of 5 mm, two cut-off straight waveguides 4-2, two transfer straight waveguides 4-3, two curved waveguides 4-4, and a wedge-shaped transition waveguide 4- 5 and an output straight waveguide 4-6 are sequentially and symmetrically connected in a Y shape. The widths of two input straight waveguides 4-1, two cutoff straight waveguides 4-2, two transfer straight waveguides 4-3, two curved waveguides 4-4 and one output straight waveguide 4-6 a...

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Abstract

The invention relates to an optical waveguide pulse coupler and a manufacturing method thereof. The unsaturated light blocking effect of the As2S8-B270 glass composite waveguide is used to realize the coupling response to the input electrical pulse signal, and the waveguide branch of the optically reversed asymmetric input is used. Mode coupling effects provide threshold limitation. By organically combining the optical particles represented by the unsaturated light blocking effect and the optical fluctuations represented by the branch waveguide mode coupling on the optical waveguide carrier, the all-optical method realizes the connection between the input electric pulse and the output synchronous electric pulse. The pulse coupling dynamic process adopts the all-optical method to realize the pulse coupling dynamic process required by the pulse coupled neural network PCNN.

Description

technical field [0001] The invention relates to an integrated optics and optical waveguide technology, in particular to an optical waveguide pulse coupler and a manufacturing method thereof. Background technique [0002] The non-linear accumulation and leakage in response to external pulse stimulation signals is a characteristic requirement of pulse-coupled neural network (PCNN) for imitation neurons. The state is manifested as a synchronous release of response pulses, and below the threshold it shows silence. The coupling dynamics between the input pulse and the output pulse is based on the experimental basis of the study of the visual cortex of the biological brain, and PCNN provides a promising way for the development of a more accurate bionic visual system. Although there are many software implementation methods of PCNN, the real-time response operation of PCNN needs to be realized by hardware. In terms of hardware implementation, reported circuit technologies include ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/255G02B6/125G02B6/134
Inventor 陈抱雪周建忠李家韡
Owner UNIV OF SHANGHAI FOR SCI & TECH
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