Isolator based on magneto-optic waveguide and preparation method thereof

An optical isolator and isolator technology, applied in the field of integrated preparation and miniaturization, can solve the problems of large size of the isolator and cannot meet the requirements of miniaturization and integration, and achieve the effect of miniaturization and size reduction

Inactive Publication Date: 2019-03-12
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a waveguide integrated magneto-optical isolator, which is used to overcome the defects that the existing isolators are large in size and unable to meet the requirements of miniaturization and integration

Method used

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  • Isolator based on magneto-optic waveguide and preparation method thereof
  • Isolator based on magneto-optic waveguide and preparation method thereof
  • Isolator based on magneto-optic waveguide and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] 1) Sample treatment: cut the magneto-optical glass sample into a size of 10.0mm×10.0mm×1.0mm, and perform optical polishing on the surface and end surface of the sample. The polished sample was first ultrasonicated with acetone for 20 minutes, and then cleaned with ethanol and deionized water respectively;

[0034] 2) Preparation of a planar waveguide structure: put the sample treated in step 1) into a 2×1.7MV tandem accelerator, inject energy at 550keV, and dose 4.0×10 16 ions / cm 2 of hydrogen ions. Hydrogen ions implanted into magneto-optical glass form a planar waveguide such as image 3 shown. Clean the planar optical waveguide successively with acetone, ethanol, and deionized water.

[0035] 3) Preparation of the ridge waveguide structure: the cleaned planar optical waveguide structure is placed on a three-dimensional adjustment platform with a spatial resolution of 0.2 μm. Use a Ti:Sapphire laser system with a wavelength of 800 nm, a pulse width of 220 fs, an...

Embodiment 2

[0039] 1) Sample treatment: cut the magneto-optical glass sample into a size of 10.0mm×10.0mm×1.0mm, and perform optical polishing on the surface and end surface of the sample. The polished sample was first ultrasonicated with acetone for 20 minutes, and then cleaned with ethanol and deionized water respectively;

[0040] 2) Preparation of planar waveguide structure: put the sample treated in step 1) into a 2×1.7MV tandem accelerator, inject energy at 6MeV, and dose at 2.0×10 15 ions / cm 2 of silicon ions. Silicon ions implanted into magneto-optical glass to form a planar optical waveguide such as image 3 shown. Clean the planar optical waveguide successively with acetone, ethanol, and deionized water.

[0041] 3) Preparation of a ridge waveguide structure: the cleaned planar optical waveguide is placed on a three-dimensional adjustment platform with a spatial resolution of 0.2 μm. Use a Ti:Sapphire laser system with a wavelength of 800 nm, a pulse width of 220 fs, and a ...

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Abstract

The invention relates to an isolator based on magneto-optic waveguide and a preparation method thereof, and belongs to the field of integrated optics. The isolator is used for overcoming the defects that the size of an existing magneto-optic isolator is large, and the requirements of miniaturization and integration cannot be met. A ridge waveguide structure is prepared in a magneto-optic materialby using a method combining an ion implantation technology and a femtosecond laser ablation technology, optical gratings are etched on two optical transmission end surfaces of the ridge waveguide structure by using the femtosecond laser, and therefore the integrated magneto-optic isolator is prepared. The isolation effect is achieved through an applied magnetic field. Miniaturized and integrated preparation of the optoisolator is finally achieved by designing the structure of devices.

Description

technical field [0001] The invention relates to an isolator based on a magneto-optical waveguide and a preparation method thereof, which belongs to the field of integrated optoelectronic devices and can be applied to the miniaturization and integrated preparation of optical isolators. Background technique [0002] Currently commercial optical isolators are basically optical devices with bulky structures. However, with the rapid development of integrated optics, traditional bulk isolators cannot be integrated at the micro-nano scale. Therefore, the research of waveguide magneto-optical isolators has become a hot field. Magneto-optical glass, also called Faraday (Faraday) optically active glass, is an emerging functional material. Due to its own Faraday effect, it has been widely used in devices such as magneto-optical isolators, circulators, magneto-optical modulators, laser switches and retarders. In addition, due to its high transmittance in the visible and near-infrared...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/095G02B6/124G02B6/134G02B6/136
CPCG02B6/124G02B6/1347G02B6/136G02B2006/12157G02F1/0955
Inventor 刘春晓朱其峰王玥
Owner NANJING UNIV OF POSTS & TELECOMM
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