Pump modular of Raman fiber glass enlarger

Abstract

The pump module includes 1342nm solid state laser, Raman resonator, LD drive, TEC drive, optical power monitor unit, micro control system and splitter integrated in full solid structured module. Output monomode fiber of 1342nm solid laser is connected to input monomode optical fiber of Raman resonator through fusion welding. Output monomode optical fiber of Raman resonator is connected to input monomode optical fiber of splitter through fusion welding. Output end of LD drive, output end of TEC drive, which are connected to micro control system electrically, are connected to 1342nm solid laser electrically. Features are: stable reliable performances, high Raman conversion efficiency and ration between performance and price.

Description

Technical field

[0001] The invention relates to an application device in the field of optical communication, in particular to a Raman fiber amplifier pump module. Background technique

[0002] Raman fiber amplifier is a key technology to realize high-speed, large-capacity, and long-distance optical fiber communication system. Raman fiber amplifier gain medium is channel transmission fiber, no special transmission medium is needed; its amplification wavelength depends only on the pump wavelength, and can amplify signals in any communication window; it can be realized by optimizing the configuration of different pump wavelengths and pump powers Broadband flat amplification; its distributed amplification characteristic has low noise, which can improve the system power margin, increase the signal rate and transmission distance, and can also solve the nonlinear damage of multi-channel and long-distance transmission. However, the cost issue has always been a restrictive factor hinderin...

Examples

Embodiment Construction

[0013] The present invention will be further described below in conjunction with embodiments and drawings.

[0014] The present invention uses 808nm wavelength LD to pump Nd:YVO 4 The crystal waveguide is coated with 808nm antireflection and 1342nm high-reflection film on the incident end of the crystal, combined with the output plane dichroic mirror to form a resonant cavity, forming a 1342nm lasing, and coupling into it using high reflectivity (HR) FBG, partial reflection (PR) The Raman resonator composed of FBG and Raman frequency-shifted fiber obtains a specific wavelength of 14xxnm laser output. This scheme is an all-solid structure.

[0015] The specific structure of the present invention is as figure 1 Shown: Including 1342nm solid-state laser, Raman resonator, LD driver, TEC driver, optical power monitoring unit, micro-control system and splitter, which are integrated into a module with a solid-state structure. Among them: the output single-mode fiber of the 1342nm solid-...

Technical field

[0001] The invention relates to an application device in the field of optical communication, in particular to a Raman fiber amplifier pump module. Background technique

[0002] Raman fiber amplifier is a key technology to realize high-speed, large-capacity, and long-distance optical fiber communication system. Raman fiber amplifier gain medium is channel transmission fiber, no special transmission medium is needed; its amplification wavelength depends only on the pump wavelength, and can amplify signals in any communication window; it can be realized by optimizing the configuration of different pump wavelengths and pump powers Broadband flat amplification; its distributed amplification characteristic has low noise, which can improve the system power margin, increase the signal rate and transmission distance, and can also solve the nonlinear damage of multi-channel and long-distance transmission. However, the cost issue has always been a restrictive factor hinderin...

Examples

Embodiment Construction

[0013] The present invention will be further described below in conjunction with embodiments and drawings.

[0014] The present invention uses 808nm wavelength LD to pump Nd:YVO 4 The crystal waveguide is coated with 808nm antireflection and 1342nm high-reflection film on the incident end of the crystal, combined with the output plane dichroic mirror to form a resonant cavity, forming a 1342nm lasing, and coupling into it using high reflectivity (HR) FBG, partial reflection (PR) The Raman resonator composed of FBG and Raman frequency-shifted fiber obtains a specific wavelength of 14xxnm laser output. This scheme is an all-solid structure.

[0015] The specific structure of the present invention is as figure 1 Shown: Including 1342nm solid-state laser, Raman resonator, LD driver, TEC driver, optical power monitoring unit, micro-control system and splitter, which are integrated into a module with a solid-state structure. Among them: the output single-mode fiber of the 1342nm solid-...

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