Wave length converter based on stimulated raman scattering and method

Abstract

The invention discloses a wave length converter based on stimulated raman scattering and a method . The wave length converter comprises a first laser device, a second layer device, a wave combiner and an optical filter, a modulator is connected with the first layer device, the first layer device is connected with an erbium-doped optical fiber amplifier through a first optical fiber, the erbium-doped optical fiber amplifier is connected with the wave combiner through the first optical fiber, the second laser device is connected with the wave combiner through a second optical fiber, and the wave combiner is connected with the optical filter through a third optical fiber. The wave length converting method comprises the following steps: first, the first layer device is chosen; second, signal light output by the first layer device is amplified to form pumping signal light; third, the second laser device is chosen to output continuous probe light; fourth, the pumping signal light and the continuous probe light are coupled into the third optical fiber by the wave combiner; fifth, the third optical fiber is amplified through the stimulated raman scattering to be conducted with wave length conversion; sixth, the probe light is filtered by the optical filter. According to the wave length converter based on the stimulated raman scattering and the method, the wave length conversion speed is high, the tuning bandwidth is wide, and the transparent, band-crossing and turnable wave length can be converted.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a wavelength converter and method based on stimulated Raman scattering. Background technique [0002] Wavelength division multiplexing technology is the preferred technology for high-speed broadband and large-capacity optical fiber communication technology. In an optical cross-connect node of a wavelength division multiplexing communication system, when two signals of the same wavelength in different optical fibers enter the same optical fiber, the problem of wavelength blocking occurs. Due to the limitations of various factors in the system, the number of wavelengths that can be multiplexed by each optical fiber is limited, so this situation will inevitably occur at the optical cross node. An effective way to solve this problem is to use wavelength conversion technology to convert one signal wavelength to other wavelengths, so as to avoid wavelength blocking in OX...

AI Technical Summary

Problems solved by technology

However, they all have disadvantages such as complex implementation process, high cost, slow conversion speed, and limited wavelengths to be converted. Moreover, when a network node needs to perform wavelength conversion on multiple wavelength channels, multiple wavelength converters must be installed at the same time, which greatly increases the cost.

Images