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Contingous wavve pumped parallel fiber optical parametric amplifier

An optical amplifier and parameter amplification technology, applied in laser optical equipment, optics, lasers, etc., can solve problems such as unacceptable crosstalk, and achieve the effect of crosstalk suppression and high gain

Inactive Publication Date: 2005-11-09
ALLISON TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In DWDM systems, this crosstalk is usually unacceptable

Method used

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  • Contingous wavve pumped parallel fiber optical parametric amplifier
  • Contingous wavve pumped parallel fiber optical parametric amplifier
  • Contingous wavve pumped parallel fiber optical parametric amplifier

Examples

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Embodiment Construction

[0033]In this invention, a new design using a parallel structure that makes it possible to reduce crosstalk will be described. The same design can also be used to extend the useful bandwidth. Even with commercially available fibers, which allow for the highest nonlinearity, this design still shows that greater bandwidth is possible.

[0034] The basic operating principles of fiber optic parametric amplifiers are known in the prior art. Optical fibers with nonlinear properties are used. Due to four-wave mixing, high-density optical signals can be transformed into optical signals with different wavelengths. If a specific frequency is applied to a nonlinear fiber, under the right circumstances sideband frequencies can develop from the noise. Optimum operating conditions occur when the pump wavelength is slightly greater than the zero-dispersion wavelength of the nonlinear fiber. The gain spectrum is roughly symmetrical with respect to the signal band and the null carrier segm...

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Abstract

A number of nonlinear optical fibers are configured in a parallel configuration. The fibers are pumped with optical pumps having a wavelength slightly longer than the zero dispersion wavelength for each fiber. By a demultiplexer, optical signals within a certain wavelength interval are admitted to enter and exit the different fibers, in which parametric amplification can be achieved. By selecting the pump wavelength outside each corresponding interval crosstalk will be suppressed. The nonlinear fibers can be pumped by separate laser pumps, or two or more of the nonlinear fibers can be pumped by a common pump, depending on the different fiber properties. By tailoring fiber properties such as the zero dispersion wavelength, the second order dispersion coefficient and the fourth order dispersion coefficient, beneficial amplification characteristics can be achieved in different wavelength intervals.

Description

technical field [0001] The present invention generally relates to an optical fiber amplifier, and more particularly to a parametric amplifier with suppressed crosstalk. Background technique [0002] Today, different kinds of data communications are becoming more and more frequent, and this development requires wider bandwidths available for communications. The capacity of different kinds of telecommunication systems has increased dramatically over the past decade, this increase in capacity is provided in part by optical fibers, which provide several orders of magnitude increase in bandwidth compared to ordinary wires. [0003] The bandwidth of optical fiber is used in an efficient manner by utilizing wavelength division multiplexing (WDM) technology. Multiple channels utilizing a large number of slightly different wavelengths can be transmitted simultaneously in one and the same fiber without interfering with each other. Dense wavelength division multiplexing (DWDM) techno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/39H01S3/00H01S3/067H01S3/094H01S3/108H01S3/23H04B10/17
CPCH01S3/005G02F1/395H01S3/094003H04B10/2972H01S3/2383H01S3/1083H01S3/094061H01S3/06725H01S3/06754
Inventor A·戈麦斯C·弗洛里迪亚M·松德海默M·R·X·德巴罗斯J·B·罗索莱姆
Owner ALLISON TELECOMM
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