Unlock instant, AI-driven research and patent intelligence for your innovation.

Light attenuation system

An optical attenuation and attenuator technology, applied in the field of optical attenuation systems, can solve the problems of limited optical attenuation adjustment accuracy, limited single-step attenuation adjustment accuracy, etc., and achieve the effect of high-precision optical attenuation adjustment

Active Publication Date: 2005-10-19
HUAWEI TECH CO LTD
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This scheme can ensure that the error between the adjusted attenuation amount and the specified value is within the range of the single-step attenuation adjustment amount (adjustment accuracy) of the attenuator, but this adjustment method is limited by the electronic control (mechanical or current control type). The single-step attenuation adjustment accuracy of the variable optical attenuator, so that the optical attenuation adjustment accuracy of the entire system is limited

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Light attenuation system
  • Light attenuation system
  • Light attenuation system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] In order to make those skilled in the art better understand the solution of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.

[0027] refer to figure 2 , figure 2 It is a schematic structural diagram of the optical attenuation system of the present invention, including the following parts:

[0028] Attenuation device 20 , input optical splitter 21 , output optical splitter 22 , control device 23 , optical power detection device 24 and optical power detection device 25 .

[0029] Usually, the optical power detection device has multiple inputs and outputs. Therefore, in practical applications, the optical power detection device 24 and the optical power detection device 25 can use the same optical power detection device.

[0030] figure 2 The solid line and its arrows in are the optical path and its direction, and the dashed line and its arrows are the control signal and its...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The light attenuation system includes input light splitter, attenuator, output light splitter, controller and at least one light power detector. The attenuator includes splitter, variable light attenuation set, and light coupler. The controller controls the attenuation amount of the variable light attenuation set based on the detection result of the light power detector. The present invention can raise the regulation precision of light attenuation.

Description

technical field [0001] The invention relates to the technical field of optical equipment, in particular to an optical attenuation system. Background technique [0002] Optical attenuators are devices that attenuate optical power by a predetermined amount, and are divided into two types: variable optical attenuators and fixed optical attenuators. The former is mainly used to adjust the power of the optical line, and the latter is mainly used to generate fixed attenuation in the optical fiber communication line with too high optical power. The main technical requirements of optical attenuators are: high attenuation accuracy, good attenuation repeatability, and low original insertion loss. Usually there are two types of variable optical attenuators: [0003] (1) Mechanical variable optical attenuator, the attenuation change is driven by the stepping motor, and the attenuation accuracy depends on the minimum change of the stepping motor, which can reach 0.04dB. [0004] (2) T...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/01H04J14/02
Inventor 刘伟
Owner HUAWEI TECH CO LTD