Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Device and method for controlling transient effect in erbium-doped fiber amplifier (EDFA)

A technology of transient effects and control methods, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve problems such as cost increase, achieve flexible working methods, significant transient suppression effects, and improve production efficiency and flexibility. Effect

Active Publication Date: 2010-06-09
GUANGXUN SCI & TECH WUHAN
View PDF2 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Transient suppression can be studied from three aspects: optics, hardware and software, and the former two require an increase in cost

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
  • Device and method for controlling transient effect in erbium-doped fiber amplifier (EDFA)
  • Device and method for controlling transient effect in erbium-doped fiber amplifier (EDFA)
  • Device and method for controlling transient effect in erbium-doped fiber amplifier (EDFA)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0047] The device and control method for suppressing the transient effect in the EDFA of the present invention will be described in detail below in conjunction with the embodiments and the accompanying drawings.

[0048] Such as figure 1 As shown, the device for suppressing the transient effect in the EDFA of the present invention includes: a photodetection diode 101 that receives the optical signal input by the EDFA and converts it into an electrical signal, and a transconductance circuit 102 that receives the signal of the photodetection diode 101, and converts the transconductance The analog signal output by the circuit 102 is converted into an analog-to-digital converter 103 of a digital signal, and a digital processor 104 is used for data processing of the digital signal converted by the analog-to-digital converter 103, and the digital signal processed by the digital processor 104 is converted into an analog The digital-to-analog converter 109 of the signal makes the anal...

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 invention discloses a device and a method for controlling the transient effect in an erbium-doped fiber amplifier (EDFA). The device comprises a photoelectric detection diode, a transconductance circuit, an analog to digital converter, a digital processor and a pump laser which are connected in sequence, wherein the pump laser is used for the analog to digital converter, and the photoelectricdetection diode is used for receiving the optical fiber inputted by the EDFA. The method comprises the following steps: making the digital signals obtained by the conversion of the analog to digital converter enter a first in first out (FIFO) data queue to capture the change of optical intensity; comparing the data on the head and the tail of the FIFO data queue under the normal stage model and making the FIFO data queue be in the pre-regulation stage mode if the change of the optical intensity being more than a set proportion; locking the data on the head of the FIFO data queue, continuouslycomparing the data on the head of the FIFO data queue and the data on the tail of the FIFO data queue and making the FIFO data queue be in the over-regulation stage model if the change of the opticalintensity being more than a preset proportion; and finally adjusting the control current of the pump laser of the EDFA rapidly when the optical intensity changing suddenly so as to control the transient effect. The invention can be used for adjusting the EDFA of any type and any requirement without changing the hardware, thus the production efficiency and the flexibility are improved.

Description

technical field [0001] The invention relates to a device and control method for suppressing transient effects in EDFA. In particular, it relates to a device and control method capable of effectively suppressing the transient effect of EDFA, thereby improving the performance of the EDFA and ensuring the stability and reliability of the entire optical communication system. Background technique [0002] In Dense Wavelength Division System (DWDM), when the input optical signal intensity of Erbium-doped Fiber Amplifier (EDFA) changes greatly, for example, when only 1 channel of optical signals with different wavelengths becomes 40 channels, the total input optical intensity suddenly When the drop is about 16dB, the energy in the bait fiber will be transferred to the remaining signal instantly, causing the signal to overshoot, otherwise it will be undershoot. Overshoot and undershoot will seriously affect the stability of the system when multi-stage EDFAs are cascaded, so they mu...

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
IPC IPC(8): H04J14/02H04B10/17
Inventor 何俊李春雨印新达龙浩江毅
Owner GUANGXUN SCI & TECH WUHAN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products