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A Faraday Rotator Applicable to High Power Optical Isolator

A technology of Faraday rotator and optical isolator, which is applied in the coupling of optical waveguides, optics, instruments, etc., can solve the problem that the optical isolator cannot work stably under high power conditions, and achieves high birefringence and meets transmission requirements. , the effect of small structural size changes

Active Publication Date: 2016-01-27
北京雷生强式科技有限责任公司
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Problems solved by technology

[0004] In order to solve the long-term stable application of the existing Faraday rotator in the fiber isolator that cannot be used under high power conditions of 10W and above, the present invention designs a Faraday rotator with thermal compensation and polarization mode dispersion compensation characteristics
The invention solves the technical problem that the optical isolator cannot work stably under high-power conditions, is suitable for high-power spatial optical isolators and high-power optical fiber isolators, and can meet the use requirements of polarization-independent and polarization-dependent isolators under high-power conditions

Method used

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  • A Faraday Rotator Applicable to High Power Optical Isolator
  • A Faraday Rotator Applicable to High Power Optical Isolator
  • A Faraday Rotator Applicable to High Power Optical Isolator

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] see figure 1 , Figure 1A As shown, a Faraday rotator suitable for high-power optical isolators of the present invention has thermal compensation and polarization mode dispersion compensation characteristics; the Z axis of the Faraday rotator is marked as the optical axis direction, and the X axis is marked as is the polarization direction of o light (refers to the polarization direction of the first forward o light 1B after the forward light passes through the first collimator 101), and the Y axis is marked as the polarization direction of e light (refers to the polarization direction of the forward light after the first collimator 101) The polarization direction of the first forward e light 1C behind the straightener 101), the forward transmission of light refers to the positive direction of the Z axis, and the reverse transmission of light refers t...

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Abstract

The invention discloses a Faraday rotator suitable for a high-power opto-isolator. The Faraday rotator comprises a thermal compensation crystal, a half-wave plate, an iron ring, a first magnetic rotation crystal, a second magnetic rotation crystal, a first magnet and a second magnet. The first magnetic rotation crystal, the thermal compensation crystal, the half-wave plate and the second magnetic rotation crystal are laid out in the forward sequence of a Z axis, the iron ring is connected to the outside of the thermal compensation crystal and the outside of the half-wave plate in a sleeved mode, the first magnet is connected to the outside of the first magnetic rotation crystal in a sleeved mode, and the second magnet is connected to the outside of the second magnetic rotation crystal in a sleeved mode. When used for the opto-isolator, the Faraday rotator enables the opto-isolator to meet the requirement for high power of hundreds of watts and improves isolation degrees by at least 3dB.

Description

technical field [0001] The present invention relates to a Faraday rotator, more particularly, to a Faraday rotator used in an optical isolator with thermal compensation and polarization mode dispersion compensation characteristics. Background technique [0002] A fiber optic isolator is a passive optical device that only allows one-way light to pass through. Its working principle is based on the non-reciprocity of Faraday rotation. The echo reflection of light can be well suppressed by the optical isolator. Optical isolators mainly use the Faraday effect of magneto-optical crystals. The characteristics of the optical isolator are: low forward insertion loss, high reverse isolation, and high return loss. An optical isolator is a passive device that allows light to pass in one direction and prevents it from passing in the opposite direction. Its function is to limit the direction of light so that the light can only be transmitted in one direction. Very good isolation, impro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/095G02B6/27
Inventor 胡姝玲陆乔乔王鑫龙耿伟彪章博
Owner 北京雷生强式科技有限责任公司
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