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Adjustable light attenuator

An attenuator and modulating light technology, which is applied in instruments, optics, nonlinear optics, etc., can solve the problem that the adjustment accuracy and performance cannot meet the optical fiber communication, etc., and achieve the effect of high resolution, high attenuation accuracy, and good application prospects.

Inactive Publication Date: 2006-03-01
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its adjustment accuracy and performance cannot meet the requirements of the growing optical fiber communication.

Method used

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  • Adjustable light attenuator
  • Adjustable light attenuator
  • Adjustable light attenuator

Examples

Experimental program
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Embodiment Construction

[0022] see first figure 1 , the adjustable optical attenuator of the present invention includes: the output optical fiber 1 is fixed in the fiber collimator 3, the fiber collimator 3 is fixed on the fixed base 13 through the collimator fixing device 2, and the input optical fiber 4 is fixed on the fiber collimator In the device 5, the optical fiber collimator 5 is fixed on the micro-displacement driving device 7 through the collimator fixing device 6, and the displacement monitoring sensor 8 is fixed on the guide rail 74 for monitoring the displacement of the flexible frame 72. The precision driving power supply 9 provides Give the input voltage of the electrostrictor 73, change the expansion and contraction of the electrostrictor 73, thereby control the translational step size of the flexible frame 72; The displacement driving device 7 performs lateral translation to constantly change the centering accuracy with the output optical fiber 1 and affects the lateral coupling effi...

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Abstract

An adjustable optical attenuator is composed of a sealed casing, a controller, and such units in said sealed casing as the first optical fibre collimator, an output optical fibre whose end face is positioned at the focus point of said first collimator, the second optical fibre collimator, the input optical fibre whose end face is positioned at the focus point of said second collimator, and a microdisplacement driver with displacing monitor sensor, precise drive power supply and voltage regulator. Its advantages are high stability and high attenuation precision.

Description

Technical field: [0001] The invention relates to optical communication technology, in particular to an adjustable optical attenuator, which is a lateral displacement adjustable optical attenuator. Background technique: [0002] The optical attenuator is an important optical passive device that appears with the development of the optical communication industry. It is widely used in optical communication networks and is an optical passive device that attenuates the power of optical signals as required. It can attenuate the optical signal power of the system according to the user's requirements, and can be used in the evaluation, research, adjustment and correction of optical communication lines and systems. [0003] According to the working principle of optical attenuators, optical attenuators can be divided into displacement optical attenuators, direct coating optical attenuators, attenuating sheet optical attenuators, and liquid crystal optical attenuators. [0004] When tw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/03H04B10/12G02B6/32
Inventor 师树恒王勇薄锋朱键强
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI