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Magneto-optic material gap waveguide magnetic surface fast wave direction-controllable photodiode

A magneto-optical material and photodiode technology, applied in optics, nonlinear optics, instruments, etc., can solve the problems of polarization angle loss, inapplicability of Faraday isolators, complex structure, etc., and achieve easy integration, simple structure, and small volume Effect

Inactive Publication Date: 2016-12-07
欧阳征标
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional Faraday isolator consists of three polarizers, a Faraday rotator and an analyzer. This device has a complex structure and is usually used in free-space optical systems
For integrated optical circuits, integrated optical devices such as optical fibers or waveguides are non-polarization maintaining systems, which will cause loss of polarization angle, so Faraday isolators are not suitable

Method used

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  • Magneto-optic material gap waveguide magnetic surface fast wave direction-controllable photodiode
  • Magneto-optic material gap waveguide magnetic surface fast wave direction-controllable photodiode
  • Magneto-optic material gap waveguide magnetic surface fast wave direction-controllable photodiode

Examples

Experimental program
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Effect test

Embodiment 1

[0044] refer to figure 1 (a) and (b), the magnetic surface fast wave direction controllable photodiode is composed of a magneto-optical material gap waveguide, and the dielectric layer 5 is air (n 0 =1), its thickness w=5mm. In the working frequency band, control the direction of the magnetic field at 3 places perpendicular to the paper surface outward through the electromagnet current, and the direction of the magnetic field at 4 places perpendicular to the paper surface inward, and the photodiode will conduct from port ” to port 2; on the contrary, control the direction of the magnetic field at 3 places vertically The paper faces inward, the direction of the magnetic field at 4 places is perpendicular to the paper, and the photodiode will conduct from port 2 to port 1. The forward and reverse transmission efficiency of these two cases is the same. Refer to Figure 4 , The operating frequency range of the photodiode and the isolator with the straight waveguide structure is 5...

Embodiment 2

[0046] refer to figure 1 (a) and (b), the magnetic surface fast wave direction controllable photodiode is composed of a magneto-optical material gap waveguide, and the dielectric layer 5 is air (n 0 =1), its thickness w=7mm. In the working frequency band, the direction of the magnetic field at the first magneto-optical material layer 3 is controlled outwardly by the direction of the paper, and the direction of the magnetic field at the second layer of magneto-optic material 4 is inward, and the photodiode will pass from port 1 to the port 2 conduction; on the contrary, control the direction of the magnetic field at the first magneto-optical material layer 3 to the inside of the paper, and the direction of the magnetic field at the second magneto-optic material layer 4 to the outside of the paper, and the photodiode will conduct from port 2 to port 1 . The forward and reverse transmission efficiencies of the two cases are the same. refer to Figure 5 , The operating frequen...

Embodiment 3

[0048] refer to figure 1 (a) and (b), the magnetic surface fast wave direction controllable photodiode is composed of a magneto-optical material gap waveguide, and the dielectric layer 5 is glass (n 0 =1.5), its thickness w=5mm. In the working frequency band, the direction of the magnetic field at the first magneto-optical material layer 3 is controlled outwardly by the direction of the paper, and the direction of the magnetic field at the second layer of magneto-optic material 4 is inward, and the photodiode will pass from port 1 to the port 2 conduction; on the contrary, control the direction of the magnetic field at the first magneto-optical material layer 3 to be perpendicular to the plane of the paper, and the direction of the magnetic field at the second magneto-optical material layer 4 to be perpendicular to the plane of the paper to be outward, and the photodiode will be conducted from port 2 to port 1. The forward and reverse transmission efficiencies of the two case...

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Abstract

The invention discloses a magneto-optic material gap waveguide magnetic surface fast wave direction-controllable photodiode which comprises a light input port, a light output port, two magneto-optic material layers, a dielectric layer and two bias magnetic fields. The photodiode and isolator is composed of the magneto-optic material layers and the dielectric layer, the light input port or the light output port is arranged at the left end of the photodiode and isolator, and the light output port or the light input port is arranged at the right end of the photodiode and isolator; the dielectric layer is arranged in a gap between the magneto-optic material layers, magnetic surface fast waves are arranged on the surfaces of the magneto-optic material layers and the dielectric layer, the bias magnetic fields which are opposite and controllable in direction are arranged at the magneto-optic material layers, and a magnetic surface fast wave photodiode is composed of magneto-optic material gap waveguide. The magneto-optic material gap waveguide magnetic surface fast wave direction-controllable photodiode is simple in structure, high in light transmission efficiency, small in size, convenient to integrate, suitable for large-scale light path integration and wide in application prospect.

Description

technical field [0001] The invention relates to a magneto-optical material, a magnetic surface wave and a photodiode, in particular to a magneto-optic material gap waveguide magnetic surface fast wave direction controllable photodiode. Background technique [0002] Photodiodes and isolators are optical devices that allow light to travel in only one direction and should be used to prevent unwanted light feedback. The main element of conventional photodiodes and isolators is the Faraday rotator, which uses the Faraday effect (magneto-optical effect) as its operating principle. The traditional Faraday isolator consists of three polarizers, a Faraday rotator and an analyzer. This device has a complex structure and is usually used in free-space optical systems. For integrated optical circuits, integrated optical devices such as optical fibers or waveguides are non-polarization maintaining systems, which will cause loss of polarization angle, so Faraday isolators are not suitable...

Claims

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Application Information

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IPC IPC(8): G02F1/09G02F1/095
CPCG02F1/093G02F1/0955G02F1/09G02F1/095
Inventor 欧阳征标郑耀贤王琼
Owner 欧阳征标
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