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Faraday Rotators and Isolators

A technology of rotation angle and rotation direction, applied in the field of Faraday rotators, can solve problems such as not being well applicable to optical integration

Inactive Publication Date: 2017-09-01
ADVALUE PHOTONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The related Faraday rotators and Faraday isolators are bulky, individually applied devices not well suited for optical integration (such as, for example, with waveguide-based or fiber-optic-based components), and, when incorporated into When used in an integrated optical system, free-space optical coupling with other components of the integrated system is required, thereby limiting the degree of miniaturization of the system and causing coupling losses

Method used

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  • Faraday Rotators and Isolators
  • Faraday Rotators and Isolators
  • Faraday Rotators and Isolators

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1060

[0055] Figure 10 shows a schematic diagram of an exemplary system that includes optical cooperation with a series of cascaded fiber lasers and amplifiers. Figure 8 的Faraday isolator array 800. This embodiment 1060 includes an isolator array 800, a cascaded fiber laser 1070, and amplifiers 1072 and 1074. The polarization rotating fiber part 822b of the Faraday rotator device of the isolator array 800 is sandwiched between the laser 1070 and the amplifier 1072 as shown in the figure, and is integrated in line with the laser 1070 and the amplifier 1072. The amplifier 1072 in turn optically cooperates with the polarization rotating fiber component 824b. The component 824b is then coupled to the amplifier 1074 and integrated in line with the amplifier 1074, and is integrated in line with the polarization rotating fiber component 826b through the amplifier 1074. In a specific embodiment, the optical fiber parts 1082, 1084, and 1086, and the optical fiber parts 1088, 1090, and 1092 ...

Embodiment 1600

[0062] As a non-limiting example of operation, and when light travels forward, the operation of embodiment 1600 is as follows. When an input light wave 1640 linearly polarized along a certain axis (illustrated as the y-axis) is coupled into the input branch A of the PM fiber-based splitter / combiner 1620, the splitter / combiner 1620 generally follows z -In the direction, the light wave is sent to the Faraday rotator 1610 through the junction 1620a. After passing through the Faraday rotator 1610, the polarization vector 1650 of the guided light wave is rotated by 45 degrees. The guided light wave is coupled into the splitter / combiner 1630. The splitter / combiner 1630 is configured to send light polarized by k degrees with respect to the predetermined axis into the output branch C, and then to the branch C. C is sent by the optical component or system coupled with it. Any part of the light wave reflected back into the branch C (generally along the -z direction as shown) will enter...

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Abstract

Faraday Rotators and Isolators. An all-fiber Faraday rotator and isolator is presented. The device is a multi-component glass optical fiber having a core with a first doping concentration of 55%-85% (w / w) of a first rare earth metal oxide, and a second rare earth metal oxide A cladding layer with a second doping concentration of 55%-85% (w / w), wherein the first rare earth metal oxide and the second rare earth metal oxide are Pr2O3, Nd2O3, Pm2O3, Sm2O3, Eu2O3, Gd2O3, One or more of Tb2O3, Dy2O3, Ho2O3, Er2O3, Tm2O3, Yb2O3, La2O3, Ga2O3, Ce2O3 and Lu2O3, and where the refractive index of the cladding is lower than that of the core. The fiber optic device also includes a plurality of magnetic elements, each formed with a hole extending through the magnetic element, where the optical fiber is placed in the hole in one of the plurality of magnetic elements.

Description

[0001] Cross-reference related applications [0002] This application is US Patent Application No. 13 / 172,623 filed on June 29, 2011, a partial continuation application titled "All FiberOptical Isolator", US No. 13 / 172,623 is a US patent application filed on May 12, 2010 No. 12 / 778,712, a partial continuation application titled "Highly Rare-Earth Doped Fiber Array", US No. 12 / 778,712 is a US patent application No. 12 / 628,914 filed on December 1, 2009, titled "Highly Rare Continue to apply for the "Earth Doped Fiber" part. According to 35 U.S.C. § 120, this application claims priority based on the aforementioned applications, and the content of each application is incorporated herein by reference in its entirety for all purposes. [0003] Statement regarding federally sponsored research or development [0004] The present invention was completed with government support in accordance with Contract No. FA9451-12-D-081. The government has certain rights in this invention. Technical fi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/095G02B6/02
Inventor 蒋仕彬耿纪宏姜卓罗涛
Owner ADVALUE PHOTONICS