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Array-adjustable optical attenuator, attenuation method implemented by same and method for manufacturing array-adjustable optical attenuator

A dimming attenuation and array technology, which is applied in optics, instruments, nonlinear optics, etc., can solve the problems of optical attenuation affecting adjacent channels, deterioration of optical performance indicators of devices, and large optical crosstalk, so as to improve attenuation accuracy, reduce Small optical crosstalk, the effect of improving device performance

Inactive Publication Date: 2018-01-19
GUANGXUN SCI & TECH WUHAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Generally, the input and output optical waveguides of the MZI type VOA optical path structure based on thermo-optic effect PLC technology are mostly designed as straight waveguides, such as figure 1 As shown, when the array tunable optical attenuator is made, the stray light formed by the light leakage at the input end will easily cause optical interference to the adjacent channel, which will lead to the deterioration of the optical performance index of the device, such as large polarization-dependent loss and large optical crosstalk etc.; in addition, the VOA based on the thermo-optic effect generally has high power consumption, and when it is made into an array structure, it is easy to affect the light attenuation of adjacent channels, resulting in thermal crosstalk

Method used

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  • Array-adjustable optical attenuator, attenuation method implemented by same and method for manufacturing array-adjustable optical attenuator
  • Array-adjustable optical attenuator, attenuation method implemented by same and method for manufacturing array-adjustable optical attenuator
  • Array-adjustable optical attenuator, attenuation method implemented by same and method for manufacturing array-adjustable optical attenuator

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Embodiment

[0045] like Figure 4 As shown, an array tunable optical attenuator according to an embodiment of the present invention is composed of a plurality of tunable optical attenuator array configurations.

[0046] like figure 2 As shown, the photoelectric structure of the adjustable optical attenuator includes: an optical path structure with adjustment and straight-through functions formed by an input curved optical waveguide 16, an upper modulation optical waveguide 11, a lower modulation optical waveguide 12, and an output curved optical waveguide 17; A heating circuit is composed of heating electrodes 13 and electrode leads 14 . The bending angle α of the input curved optical waveguide is any angle greater than 0° and less than 360°; the bending angle β of the output curved optical waveguide is any angle greater than 0° and less than 360°. The heating electrode is arranged on the upper modulating optical waveguide or the lower modulating optical waveguide or both upper and low...

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Abstract

The invention relates to an attenuator, an attenuation method implemented by the same and a method for manufacturing the attenuator, belongs to the field of optical communication, and particularly relates to an array-adjustable optical attenuator, an attenuation method implemented by the same and a method for manufacturing the array-adjustable optical attenuator. The array-adjustable optical attenuator, the attenuation method and the method have the advantages that the array-adjustable optical attenuator is in bent optical waveguide structural designs, and accordingly optical crosstalk on adjacent channels due to stray light formed by light leakage at input ends can be reduced; deeply etched heat-insulation grooves are formed in positions between the channels and are filled with Polymer materials with low heat conduction and low expansion properties, and accordingly cross heat conduction between the various channels can be effectively isolated.

Description

technical field [0001] The invention relates to an attenuator and its attenuation and manufacturing method, belonging to the field of optical communication, in particular to an array adjustable optical attenuator and its attenuation and manufacturing method. Background technique [0002] Variable Optical Attenuation (VOA) is an indispensable device in DWDM (Dense Wavelength Division Multiplexing) optical communication signal transmission system. Efficient transmission and reception. At present, there are various types of manufacturing technologies for tunable optical attenuators, which can be roughly divided into discrete micro-optical component technology, micro-electromechanical system (MEMS) technology, and planar lightwave circuit (Planar Lightwave Circuit, PLC) technology. Among them, the Mach-Zehnder Interferometer (MZI) type VOA manufactured based on thermo-optic effect PLC technology has the advantages of good stability, small size, low cost, easy integration, and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/26
CPCG02B6/26G02F1/01
Inventor 徐晓辉陈辉张伊丁丽周天红马卫东
Owner GUANGXUN SCI & TECH WUHAN
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