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

Method and arrangement for the rapid adjustment of the tilt of optical WDM signals

A signaling, fast technique for switching on and off the blue channel

Inactive Publication Date: 2006-03-01
XIEON NETWORKS SARL
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compensation method based on the practically inertialess Raman effect disclosed in WO 99 / 29057 encounters it even when using feed-forward regulation due to the delay of the propagation time of the light in the optical fiber and the corrective action associated therewith. the limit

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
  • Method and arrangement for the rapid adjustment of the tilt of optical WDM signals
  • Method and arrangement for the rapid adjustment of the tilt of optical WDM signals
  • Method and arrangement for the rapid adjustment of the tilt of optical WDM signals

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] figure 1 A principled setup for tilt correction or tilt adjustment is shown in . The wavelength multiplexed optical signal WMS is delivered to the input terminal IN of the fiber amplifier through the transmission fiber FI. The fiber amplifier is pumped by a pump laser PL via a splitter SP2 counter to the direction of transmission. (At least) one tilt-correction pump laser KL is provided for tilt correction / compensation, the correction signal KS of the tilt-correction pump laser KL is first summed with the anti-pump excitation signal AS of the anti-pump laser AL via a splitter SP3, and then is fed into the transmission fiber FI. A measuring and regulating device MCE is provided for measuring the tilt, which taps off the tilt measurement signal TMS from the output signal via a fourth splitter SP4 and monitors it, and controls the tilt correcting pump laser accordingly KL. It can also control the power of the anti-pump laser AL if necessary.

[0023] In the simplest c...

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

An anti-pump laser (AL) is used in addition to a tilt correction pumplaser (KL) for Raman tilt control, said anti-pump laser injecting an anti-pump signal into a transmission fiber (FI) or a dispersion compensation fiber (DCF). The anti-pump laser (AL) has the function of reducing the pump energy of the control pump laser (KL) in the course of the fiber (FI, DCF), in order to restrict its effective length and to enable a Faster adjustment of the tilt.

Description

Background technique [0001] Groups of optical signals with different wavelengths (WDM signals for short) are transmitted via optical waveguides, where fiber amplifiers are often used for their amplification, which use specially doped fibers or (additionally) also use Raman (Raman) effect. [0002] In the WDM method, a plurality of data signals (channels) are combined in each case to form a channel group. The "channels" of a transmission frequency band are usually co-amplified. A tilting of the signal due to the Raman effect during transmission results in an attenuation of the level of signals with smaller wavelengths / higher frequencies and an amplification of signals with larger wavelengths / lower frequencies. This undesired tilt (often referred to as tilt) is compensated, for example, by means of a non-linear amplifier or filter. [0003] WO 99 / 29057 discloses a method for compensating for inclination, during which the inclination is preferably changed by two additional pum...

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): H04B10/17H04B10/18H01S3/30
CPCH04B10/2942
Inventor E·戈特瓦尔德
Owner XIEON NETWORKS SARL