CN204793602U - Distal end pumping erbium doped fiber amplifier - Google Patents
Distal end pumping erbium doped fiber amplifier Download PDFInfo
- Publication number
- CN204793602U CN204793602U CN201520509893.2U CN201520509893U CN204793602U CN 204793602 U CN204793602 U CN 204793602U CN 201520509893 U CN201520509893 U CN 201520509893U CN 204793602 U CN204793602 U CN 204793602U
- Authority
- CN
- China
- Prior art keywords
- erbium
- pump
- fiber
- fiber amplifier
- optical fiber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model relates to a distal end pumping erbium doped fiber amplifier, include the pump light source and the erbium doped fiber amplifier that connect through pumping transmission fiber, the pump light source is the big power laser ware of 1390nm, and the pump light source is connected through a high reflectivity 1480nm fiber grating to pumping transmission fiber's one end, and erbium doped fiber amplifier is connected through an antiradar reflectivity 1480nm fiber grating to pumping transmission fiber's the other end. Fiber grating makes 1390nm laser frequency displacement to 1480nm laser expeditiously to forming laser resonator. The utility model overcomes the not high shortcoming of raman frequency displacement efficiency among the 1390nm laser transmission also can obtain sufficient 1480nm pumping laser through longer optical fiber transmission, the utility model discloses the 1480nm pumping laser power that optical fiber amplifier obtained improves more than the 3dB than traditional mode, under the looks same distance circumstances, the utility model discloses obtain bigger signal gain, perhaps under the same signal gain, has farther pumping transmission distance.
Description
Technical field
The utility model relates to a kind of fiber amplifier, is specifically related to a kind of far-end pump erbium-doped optical fiber amplifier for optical fiber telecommunications system.
Background technology
Far-end pump erbium-doped optical fiber amplifier (being called for short pump image intensifer far away) is the main Repeater optical amplifiers of optical fiber telecommunications system, its pump light source is placed in the machine room of transmitter or receiver, by optical fiber, pump light is transferred to erbium-doped fiber amplifier and carry out pumping, there is the feature of relay point without the need to power supply.Conventional pump image intensifer far away adopts 1480nm high power laser pumping or the pumping of 1390nm high power laser.1480nm high power laser transmitting procedure in a fiber except because of Optical Fiber Transmission loss, reduce except its luminous power, the impact of stimulated Raman scattering is also subject to when transmission range is far away, make near most of power transfer of pumping laser to 1570nm wavelength, seriously reduce 1480nm laser transmission efficiency, the pump power causing erbium-doped fiber amplifier to obtain is not enough, and image intensifer is difficult to export larger signal gain.1390nm high power laser be then make use of laser in a fiber long-distance transmissions time the feature that can be affected by stimulated Raman scattering, 1390nm laser power is transferred near 1480nm wavelength by the effect of stimulated Raman scattering, to meet the requirement of erbium-doped fiber amplifier absorption spectrum.But stimulated Raman scattering is transmitted in both directions, therefore the laser power transformation efficiency of the Raman frequency shift of stimulated Raman scattering generation is low, and Raman frequency shift spectral bandwidth is larger, wherein the available laser power of erbium-doped fiber amplifier is also little, therefore 1390nm laser is not high as the efficiency of the pumping source of pump image intensifer far away, can not meet the requirement of erbium-doped fiber amplifier to pump power.
Utility model content
The purpose of this utility model is to provide a kind of far-end pump erbium-doped optical fiber amplifier, pump light source is 1390nm high power laser, the fiber grating of a 1480nm is respectively added at pump transmission optical fiber two ends, fiber grating pair forms laserresonator, make 1390nm frequency displacement to 1480nm, laser shift efficiency improves, and 1480nm laser spectroscopy more meets the requirement of erbium-doped fiber amplifier absorption spectrum.
A kind of far-end pump erbium-doped optical fiber amplifier of the utility model design, comprise the pump light source through pump transmission Fiber connection and erbium-doped fiber amplifier, pump light source is 1390nm high power laser, one, one end high reflectance 1480nm fiber grating of pump transmission optical fiber connects pump light source, and the other end of pump transmission optical fiber connects erbium-doped fiber amplifier through an antiradar reflectivity 1480nm fiber grating.
Fiber grating pair formed laserresonator, make whole pumping laser transmission link form a 1480nm Raman fiber lasers, make 1390nm laser expeditiously frequency displacement to 1480nm laser.
Described 1390nm high power laser is the laser that monomode fiber exports.
Pump transmission optical fiber between described high reflectance 1480nm fiber grating and antiradar reflectivity 1480nm fiber grating is general single mode fiber or ultra-low-loss fiber, and fiber lengths is 50km ~ 150km.
Centered by described high reflectance 1480nm bragg grating wavelength be 1480nm, the reflectivity bragg grating that is greater than 90%, centered by preferred version, wavelength is the bragg grating of 1480nm, reflectivity 99%.
Centered by described antiradar reflectivity 1480nm bragg grating, wavelength is 1480nm, reflectivity is less than 20%, is greater than the bragg grating of 5%.
Described erbium-doped fiber amplifier is 1480nm laser pumping type erbium-doped fiber amplifier.
Described antiradar reflectivity 1480nm fiber grating is connected with erbium-doped fiber amplifier through the pump transmission optical fiber of another section 0 ~ 100km.Pump transmission optical fiber total length between pump light source and erbium-doped fiber amplifier is less than or equal to 150km.
Compared with prior art, the beneficial effect of a kind of far-end of the utility model pump erbium-doped optical fiber amplifier is: 1, overcome the shortcoming that in 1390nm laser transmission, Raman frequency shift efficiency is not high, also can obtain enough 1480nm pumping lasers through up to a hundred kilometers transmit compared with long optical fibers, the 1480nm pump laser power that the utility model image intensifer obtains on average improves more than 3dB than traditional 1390nm pump mode; In same distance situation, the utility model image intensifer can obtain larger signal gain; Or under same signal gain, the utility model has farther pump transmission distance.
Accompanying drawing explanation
Fig. 1 is this far-end pump erbium-doped optical fiber amplifier embodiment 1 structural representation;
Fig. 2 is this far-end pump erbium-doped optical fiber amplifier embodiment 2 structural representation;
Embodiment
Embodiment 1
As shown in Figure 1, this routine pump light source is the high power laser that 1390nm monomode fiber exports to this far-end pump erbium-doped optical fiber amplifier embodiment 1 structure, and pump transmission optical fiber is general single mode fiber, and fiber lengths is 100km.In one end through add a centre wavelength be 1480nm, reflectivity be 99% the bragg grating connection pump light source of pump transmission optical fiber near pump light source.Pump transmission optical fiber near the other end of erbium-doped fiber amplifier add through centre wavelength be 1480nm, reflectivity be 10% bragg grating connect erbium-doped fiber amplifier.This routine erbium-doped fiber amplifier is 1480nm laser pumping type single-stage erbium-doped fiber amplifier.
This routine optical sender is connected with erbium-doped fiber amplifier through the signal transmission fiber of 100km.This routine signal transmission fiber take general single mode fiber as medium.The light signal s laser power that optical sender exports is 0dBm, the 2W pumping laser that dump power-20dBm, pump light source 1390nm high power laser exports after the transmission of 100km signal transmission fiber produces 8dB gain at erbium-doped fiber amplifier after 100km pump transmission optical fiber.Light signal S after this routine fiber amplifier amplifies outputs to next stage Transmission Fibers.
Embodiment 2
This far-end pump erbium-doped optical fiber amplifier embodiment 2 structure as shown in Figure 2, wherein the structure of the 1480nm fiber grating of pump light source, pump transmission optical fiber, high reflectance and the 1480nm fiber grating of antiradar reflectivity is identical with embodiment 1, and difference is that this routine pump transmission optical fiber is ultra-low-loss fiber.Pump light source 1390nm high power laser connects one end of one section of 70km pump transmission optical fiber through high reflectance 1480nm fiber grating, this section of pump transmission optical fiber other end connects antiradar reflectivity 1480nm fiber grating, afterwards again through the 70km pump transmission Fiber connection erbium-doped fiber amplifier of another section; The light signal s that this routine optical sender exports directly inputs erbium-doped fiber amplifier, and the signal transmission fiber that the output of erbium-doped fiber amplifier is medium through the ultra-low-loss fiber of 140km is connected with optical receiver.
Above-described embodiment, be only the specific case further described the purpose of this utility model, technical scheme and beneficial effect, the utility model is not defined in this.All make within scope of disclosure of the present utility model any amendment, equivalent replacement, improvement etc., be all included within protection range of the present utility model.
Claims (8)
1. a far-end pump erbium-doped optical fiber amplifier, comprises the pump light source through pump transmission Fiber connection and erbium-doped fiber amplifier, and pump light source is 1390nm high power laser, it is characterized in that:
One, one end high reflectance 1480nm fiber grating of described pump transmission optical fiber connects pump light source, and the other end of pump transmission optical fiber connects erbium-doped fiber amplifier through an antiradar reflectivity 1480nm fiber grating.
2. far-end pump erbium-doped optical fiber amplifier according to claim 1, is characterized in that:
Described 1390nm high power laser is the laser that monomode fiber exports.
3. far-end pump erbium-doped optical fiber amplifier according to claim 1, is characterized in that:
Described pump transmission optical fiber is general single mode fiber or ultra-low-loss fiber, and fiber lengths is 50km ~ 150km.
4. far-end pump erbium-doped optical fiber amplifier according to claim 1, is characterized in that:
Centered by described high reflectance 1480nm bragg grating wavelength be 1480nm, the reflectivity bragg grating that is greater than 90%.
5. far-end pump erbium-doped optical fiber amplifier according to claim 1, is characterized in that:
Centered by described high reflectance 1480nm bragg grating, wavelength is 1480nm, reflectivity is the bragg grating of 99%.
6. far-end pump erbium-doped optical fiber amplifier according to claim 1, is characterized in that:
Centered by described antiradar reflectivity 1480nm bragg grating, wavelength is 1480nm, reflectivity is less than 20%, is greater than the bragg grating of 5%.
7. far-end pump erbium-doped optical fiber amplifier according to claim 1, is characterized in that:
Described erbium-doped fiber amplifier is 1480nm laser pumping type erbium-doped fiber amplifier.
8. far-end pump erbium-doped optical fiber amplifier according to claim 1, is characterized in that:
Described antiradar reflectivity 1480nm fiber grating is connected with erbium-doped fiber amplifier through the pump transmission optical fiber of another section 0 ~ 100km; Pump transmission optical fiber total length between pump light source and erbium-doped fiber amplifier is less than or equal to 150km, and the pump transmission optical fiber total length between pump light source and erbium-doped fiber amplifier is less than or equal to 150km.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509893.2U CN204793602U (en) | 2015-07-15 | 2015-07-15 | Distal end pumping erbium doped fiber amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520509893.2U CN204793602U (en) | 2015-07-15 | 2015-07-15 | Distal end pumping erbium doped fiber amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204793602U true CN204793602U (en) | 2015-11-18 |
Family
ID=54533589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520509893.2U Active CN204793602U (en) | 2015-07-15 | 2015-07-15 | Distal end pumping erbium doped fiber amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204793602U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953451A (en) * | 2015-07-15 | 2015-09-30 | 中国电子科技集团公司第三十四研究所 | Far-end pumping erbium-doped optical fiber amplifier |
-
2015
- 2015-07-15 CN CN201520509893.2U patent/CN204793602U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104953451A (en) * | 2015-07-15 | 2015-09-30 | 中国电子科技集团公司第三十四研究所 | Far-end pumping erbium-doped optical fiber amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104953451A (en) | Far-end pumping erbium-doped optical fiber amplifier | |
| CN102223183B (en) | Non-relay optical fiber transmission system and method | |
| CN102404053B (en) | Optical fiber communication system capable of simultaneously realizing remote pump amplification and Raman amplification | |
| CN109742645B (en) | High-efficiency L-band remote amplifier | |
| CN103872560A (en) | Single-pumping semi-open cavity randomly-distributed feedback laser based on erbium-doped fiber | |
| CN203850612U (en) | Distributed fiber Raman amplifier | |
| CN202160181U (en) | No-repeater optical fiber transmission system | |
| CN205081351U (en) | High -power L wave band erbium doped fiber amplifier of all optical fibre structure | |
| CN103278998A (en) | Fiber parameter amplification system for improving energy conversion efficiency of pump light to signal light | |
| CN107196180B (en) | Cascade remote optical amplification system | |
| CN209487928U (en) | Efficient L-band remote amplifier | |
| CN204793602U (en) | Distal end pumping erbium doped fiber amplifier | |
| CN209844966U (en) | Hybrid amplifier | |
| CN106067654B (en) | 1950nm laser-based far-end pumping erbium-doped optical fiber amplifier | |
| CN103606806A (en) | Distributed fiber Raman amplifier | |
| CN204131527U (en) | A kind of raman amplifier based on the cascade of As-S and As-Se optical fiber | |
| CN103441417B (en) | A kind of Novel multi-wavelength Brillouin-Raman fiber laser | |
| CN210897969U (en) | Second-order Raman amplifier | |
| CN209487932U (en) | Remotely pumping unit group | |
| CN202513934U (en) | Raman fiber amplifier with large gain control range | |
| CN210897967U (en) | Second-order Raman amplifier of equidirectional pumping | |
| CN207010684U (en) | Repeatless transmission system with compound shared pumping source | |
| CN106532419B (en) | Erbium-doped optical fiber amplifier of far-end pumping of optical fiber Raman laser | |
| CN203551923U (en) | Optical fiber parametric amplification system improving energy conversion efficiency from pump light to signal light | |
| CN209544811U (en) | Remote passive gain module group |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |