CN206195146U - Erbium doped fiber amplifier of optic fibre raman laser's distal end pumping - Google Patents
Erbium doped fiber amplifier of optic fibre raman laser's distal end pumping Download PDFInfo
- Publication number
- CN206195146U CN206195146U CN201621294238.0U CN201621294238U CN206195146U CN 206195146 U CN206195146 U CN 206195146U CN 201621294238 U CN201621294238 U CN 201621294238U CN 206195146 U CN206195146 U CN 206195146U
- Authority
- CN
- China
- Prior art keywords
- fiber
- erbium
- amplifier
- doped fiber
- distal end
- 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.)
- Withdrawn - After Issue
Links
Landscapes
- Lasers (AREA)
Abstract
The utility model relates to an optic fibre raman laser's distal end pumping erbium doped fiber amplifier, the 1550nm laser instrument is optic fibre raman laser's pumping source, the one end of connecting pumping transmission fiber through tertiary high reflectivity fiber grating, the frequency multiplier is connected through tertiary low reflectivity fiber grating to pumping transmission fiber's the other end, erbium doped fiber amplifier is connected to the frequency multiplier, optical signal input erbium doped fiber amplifier, erbium doped fiber amplifier's output is through light signal transmission fiber connection optical receiver. Optic fibre raman laser center wavelength is 1950 2nm. Pumping transmission fiber is the silica -based optic fibre of single mode, and its length equals or is less than 100km. Light signal transmission optic fibre is direct or connect optical receiver through light amplifier. The utility model discloses than direct transmission 980nm laser transmission apart from improving tens times, its noise coefficient controls than 1480nm pump light amplifier's far away noise coefficient reduction 1.5dB, has improved distal end pumping erbium doped fiber amplifier's noiseproof feature greatly.
Description
Technical field
The utility model is related to a kind of fiber amplifier, and in particular to for a kind of optical fiber of repeaterless fiber communication system
The erbium-doped fiber amplifier of the distal end pumping of Ramar laser.
Background technology
The erbium-doped fiber amplifier (referred to as remote pump image intensifer) of distal end pumping is the main of repeaterless fiber communication system
Repeater optical amplifiers, its pump light source is placed in the computer room of emitter or receiver, by optical fiber by pumping optical transport to mixing
Doped fiber amplifier (EDFA) carries out pumping, the characteristics of need not being powered with relay point.The pump of erbium-doped fiber amplifier (EDFA)
Pu absworption peak is 980nm and 1480nm, therefore the pumping source of selection 980nm and 1480nm.The EDFA of 1480nm laser pump (ing)s is two
Level structure, noise coefficient is higher, typically in 6dB or so.And the EDFA noise coefficients of common 980 pumping be only 4.5dB even
It is lower, but the loss of 980nm Laser Transmissions is very big, is not suitable for long-distance transmissions.Therefore the er-doped of distal end pumping conventional at present
Fiber amplifier can only carry out long-distance transmissions using high-power 1480nm laser, for erbium-doped optical fiber amplifier EDFA provides pump
Pu, the too high effect for affecting remote-pumped amplifier of its noise coefficient.
Utility model content
In order to overcome existing remote-pumped amplifier pumping to use 1480nm pumping source noise coefficients shortcoming high, the utility model
A kind of erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser is provided, 1550nm lasers are used as fiber Raman laser
The pumping source of device, pump transmission optical fiber is the Raman fiber of fibre optic Raman laser, through multi-stage cascade fiber grating pair and it is long away from
From pumping optical fiber transmission, form the output of 1950nm laser, into frequency multiplier, frequency multiplication is 980nm laser, is put as Er-doped fiber
The pump light of big device, obtains relatively low noise coefficient, and reduce the loss of transmission over long distances.
A kind of erbium-doped fiber amplifier scheme of the distal end pumping of the fibre optic Raman laser of the utility model design：Including
Fibre optic Raman laser, frequency multiplier and erbium-doped fiber amplifier with pump transmission optical fiber as Raman fiber, 1550nm lasers
It is the pumping source of fibre optic Raman laser, one end of pump transmission optical fiber, pumping is connected through 1~4 grade of high reflectance fiber grating
The other end of Transmission Fibers is connected to frequency multiplier through 1~4 grade of antiradar reflectivity fiber grating, and frequency multiplier connects erbium-doped fiber amplifier,
Optical signal is input into erbium-doped fiber amplifier, and the output end of erbium-doped fiber amplifier connects photoreceiver through optical signal transmission fiber；
The high reflectance fiber grating is identical with the series of antiradar reflectivity fiber grating.
When pump transmission optical fiber is silica-based optical fibers, fibre optic Raman laser is three-stage cascade Ramar laser, i.e., high anti-
Penetrate rate fiber grating and antiradar reflectivity fiber grating is 3 grades.
1950 ± 2nm of wavelength, optical fiber centered on the fibre optic Raman laser with pump transmission optical fiber as Raman fiber
The laser of output.
The 1550nm lasers are the laser of single-mode fiber output, the wherein a length of 1550 ± 10nm of cardiac wave, its power
More than 1W.
The multistage high reflectance fiber grating and multistage antiradar reflectivity fiber grating constitute the fiber grating of multilevel symmetrical
It is right.
Wavelength is 1664nm ± 5nm, 1795nm ± 5nm and 1950nm ± 2nm centered on the multi-stage fiber grating pair
3-stage optical fiber grating pair；Each pair fiber grating is by a reflectivity>95% high reflectance fiber grating and a reflectivity are
5%~50% antiradar reflectivity fiber grating is constituted, and the centre wavelength with a pair of fiber gratings is consistent.
The frequency multiplier is waveguide type optical fiber frequency multiplier.
The frequency multiplier is output as the single-mode laser that centre wavelength is 975nm ± 1nm wavelength, commonly referred to as 980nm
Laser.
The erbium-doped fiber amplifier is 980nm laser pump (ing) type erbium-doped fiber amplifiers.
The pump transmission optical fiber is single-mode fiber, and its length is more than or equal to 40km, equal to or less than 100km.
The output end of the erbium-doped fiber amplifier connects photoreceiver through optical signal transmission fiber.
The optical signal transmission fiber is directly connected to photoreceiver, or connects photoreceiver through image intensifer；The light
Amplifier is Pre-EDFA or backward pump raman amplifier.
The photoreceiver and 1550nm lasers are positioned in same place computer room, pump transmission optical fiber and optical signal transmission
The length of optical fiber is identical.
A kind of beneficial effect of the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser of the utility model is：1、
Transmitted in pump transmission optical fiber by 1550nm laser, form the vibration of multi-stage cascade raman laser, export 1950nm laser, then
980nm laser is obtained by frequency multiplier to export, for distal end erbium-doped fiber amplifier provides pumping, overcome 980nm Laser Transmissions
Loss is big, be unfavorable for the shortcoming of remote power transmission, and this programme pumping laser transmission range is than directly transmitting 980nm lasers
Defeated distance improves more than ten times；2nd, the 980nm pumping lasers obtained after frequency multiplication carry out pumping to erbium-doped fiber amplifier, its noise system
Noise coefficient reduction 1.5dB of number pump image intensifer more remote than 1480nm or so, substantially improves distal end pump erbium-doped optical fiber and amplifies
The noiseproof feature of device.
Brief description of the drawings
Fig. 1 is the erbium-doped fiber amplifier example structure schematic diagram of the distal end pumping of this fibre optic Raman laser.
Specific embodiment
The erbium-doped fiber amplifier embodiment of the distal end pumping of this fibre optic Raman laser is as shown in figure 1, pump light source is
A length of 1550 ± the 10nm of 1550nm lasers, wherein cardiac wave, the optical fiber output of 1550nm lasers through 1950nm ± 2nm,
Three high reflectance fiber gratings of 1795nm ± 5nm and 1664nm ± 5nm connect one end of pump transmission optical fiber, and pumping is passed
It is the single mode silica-based optical fibers of 50km to lose fine, the pump transmission optical fiber other end through 1664nm ± 5nm, 1795nm ± 5nm and
Three antiradar reflectivity fiber gratings connection waveguide type optical fiber frequency multiplier of 1950nm ± 2nm, frequency multiplier is output as centre wavelength
The single-mode laser of 975nm ± 1nm, frequency multiplier connection 980nm laser pump (ing) type erbium-doped fiber amplifiers, erbium-doped fiber amplifier
Output end connects optical signal transmission fiber, and optical signal transmission fiber connects light-receiving through Pre-EDFA (EDFA)
Machine.This example photoreceiver and 1550nm lasers are positioned in same place computer room, pump transmission optical fiber and optical signal transmission fiber
Length it is identical.
Power is faint optical signal (in Fig. 1) the input erbium-doped fiber amplifier of -40dBm；1550nm lasers
When laser is through 3-stage optical fiber grating pair and 50km pump transmissions Optical Fiber Transmission to frequency multiplier, 1950nm laser power 50mW are exported,
The 975nm laser powers of frequency multiplier output are 20mW, for the erbium-doped fiber amplifier pumping to pumping, erbium-doped fiber amplifier
The optical signal gain 25dB of output, noise figure of amplifier 4.5dB, then by after 50km optical signal transmission fibers, being mixed through preposition
Doped fiber amplifier (EDFA) amplifies, and success is received by photoreceiver.
This example three-level high reflectance fiber grating is integrated in the cabinet of 1550nm lasers, three-level antiradar reflectivity grating collection
Into in erbium-doped fiber amplifier module.
This example frequency multiplier is integrated in same module with erbium-doped fiber amplifier.
Above-described embodiment, only further describes to the purpose of this utility model, technical scheme and beneficial effect
Specific case, the utility model is not limited to this.All any modifications made within scope of disclosure of the present utility model,
Equivalent, improvement etc., are all contained within protection domain of the present utility model.
Claims (10)
1. the erbium-doped fiber amplifier of the distal end pumping of a kind of fibre optic Raman laser, including with pump transmission optical fiber as Raman light
Fine fibre optic Raman laser, frequency multiplier and erbium-doped fiber amplifier, it is characterised in that：
1550nm lasers are the pumping source of fibre optic Raman laser, and pump transmission is connected through 1~4 grade of high reflectance fiber grating
One end of optical fiber, the other end of pump transmission optical fiber is connected to frequency multiplier, frequency multiplier connection through 1~4 grade of antiradar reflectivity fiber grating
Erbium-doped fiber amplifier, optical signal input erbium-doped fiber amplifier, the output end of erbium-doped fiber amplifier is through optical signal transmission light
Fibre connection photoreceiver；
The high reflectance fiber grating is identical with the series of antiradar reflectivity fiber grating；And constitute the fiber grating of multilevel symmetrical
It is right；
1950 ± 2nm of wavelength, optical fiber output centered on the fibre optic Raman laser with pump transmission optical fiber as Raman fiber
Laser.
2. the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to claim 1, it is characterised in that：
The 1550nm lasers are the laser of single-mode fiber output, and the wherein a length of 1550 ± 10nm of cardiac wave, its power is more than
1W。
3. the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to claim 1, it is characterised in that：
The pump transmission optical fiber is silica-based optical fibers, and fibre optic Raman laser is three-stage cascade Ramar laser, i.e. high reflectance
Fiber grating and antiradar reflectivity fiber grating are 3 grades.
4. the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to claim 3, it is characterised in that：
Wavelength is the three-level of 1664nm ± 5nm, 1795nm ± 5nm and 1950nm ± 2nm centered on the multi-stage fiber grating pair
Fiber grating pair；Each pair fiber grating is by a reflectivity>95% high reflectance fiber grating and reflectivity be 5%~
50% antiradar reflectivity fiber grating is constituted, and the centre wavelength with a pair of fiber gratings is consistent.
5. the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to any one of claim 1 to 4,
It is characterized in that：
The frequency multiplier is waveguide type optical fiber frequency multiplier, is output as the single-mode laser that centre wavelength is 975nm ± 1nm wavelength.
6. the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to any one of claim 1 to 4,
It is characterized in that：
The erbium-doped fiber amplifier is 980nm laser pump (ing) type erbium-doped fiber amplifiers.
7. the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to any one of claim 1 to 3,
It is characterized in that：
The pump transmission optical fiber is single-mode fiber, and its length is more than or equal to 40km, equal to or less than 100km.
8. the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to any one of claim 1 to 4,
It is characterized in that：
The output end of the erbium-doped fiber amplifier connects photoreceiver through optical signal transmission fiber.
9. the erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to any one of claim 1 to 4,
It is characterized in that：
The optical signal transmission fiber is directly connected to photoreceiver, or connects photoreceiver through image intensifer；The light amplification
Device is Pre-EDFA or backward pump raman amplifier.
10. the Erbium-doped fiber amplifier of the distal end pumping of fibre optic Raman laser according to any one of claim 1 to 4
Device, it is characterised in that：
The photoreceiver and 1550nm lasers are positioned in same place computer room, pump transmission optical fiber and optical signal transmission fiber
Length it is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621294238.0U CN206195146U (en) | 2016-11-29 | 2016-11-29 | Erbium doped fiber amplifier of optic fibre raman laser's distal end pumping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621294238.0U CN206195146U (en) | 2016-11-29 | 2016-11-29 | Erbium doped fiber amplifier of optic fibre raman laser's distal end pumping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206195146U true CN206195146U (en) | 2017-05-24 |
Family
ID=58725548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621294238.0U Withdrawn - After Issue CN206195146U (en) | 2016-11-29 | 2016-11-29 | Erbium doped fiber amplifier of optic fibre raman laser's distal end pumping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206195146U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532419A (en) * | 2016-11-29 | 2017-03-22 | 中国电子科技集团公司第三十四研究所 | Far-end pumped erbium-doped fiber amplifier of fiber Raman laser |
-
2016
- 2016-11-29 CN CN201621294238.0U patent/CN206195146U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532419A (en) * | 2016-11-29 | 2017-03-22 | 中国电子科技集团公司第三十四研究所 | Far-end pumped erbium-doped fiber amplifier of fiber Raman laser |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109599740A (en) | With the two directional pump double-cladding fiber laser amplifier for inhibiting SBS effect | |
| Takasaka et al. | EDF Length dependence of amplification characteristics of cladding pumped 19-core EDFA | |
| CN104104000B (en) | More covering Raman Fiber Amplifiers | |
| CN208093939U (en) | Small-sized L-band erbium-doped fiber amplifier | |
| CN102495510A (en) | Gain flat type high-power optical fiber amplifier based on optical fiber loop mirror | |
| CN104953451A (en) | Far-end pumping erbium-doped optical fiber amplifier | |
| CN108808434A (en) | High efficiency Raman pulse laser based on noise like pulse pump | |
| CN203850612U (en) | Distributed fiber Raman amplifier | |
| CN206195146U (en) | Erbium doped fiber amplifier of optic fibre raman laser's distal end pumping | |
| CN1117678A (en) | Now therefore to all whom it may concern | |
| EP1389742A1 (en) | Optical Amplifier | |
| CN206850773U (en) | A kind of no-repeater optical fiber transmission system for bypassing positive Raman amplifiction | |
| CN106067654B (en) | 1950nm laser-based far-end pumping erbium-doped optical fiber amplifier | |
| CN108649415B (en) | Thulium-doped optical fiber laser amplifier | |
| CN107196180A (en) | Cascade long-range optical amplification system | |
| CN205863636U (en) | A kind of far-end pump erbium-doped optical fiber amplifier based on 1950nm laser instrument | |
| CN106532419A (en) | Far-end pumped erbium-doped fiber amplifier of fiber Raman laser | |
| US20230003934A1 (en) | Multi-core optical amplifying fiber, multi-core optical fiber amplifier, and optical communication system | |
| CN207010682U (en) | A kind of repeatless transmission system | |
| CN202183550U (en) | Pulse optical fiber amplifier | |
| CN214313856U (en) | Bidirectional optical amplifier of single-core bidirectional communication system | |
| CN209929673U (en) | Bidirectional pumping double-cladding optical fiber laser amplifier with SBS (styrene-butadiene-styrene) inhibiting function | |
| CN207010684U (en) | Repeatless transmission system with compound shared pumping source | |
| CN210897969U (en) | Second-order Raman amplifier | |
| Tsuchida et al. | Cladding-pumped L-band multicore EDFA with reduced power consumption |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220112 Address after: 541004 No. 98, Liuhe Road, Guilin, the Guangxi Zhuang Autonomous Region Patentee after: NO 34 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY Group CORPORATION (CETC) Patentee after: Guilin Xintong Technology Co., Ltd; Address before: 541004 No. 98, Liuhe Road, Guilin, the Guangxi Zhuang Autonomous Region Patentee before: NO 34 RESEARCH INSTITUTE OF CHINA ELECTRONICS TECHNOLOGY Group CORPORATION (CETC) Patentee before: GUILIN DAWEI COMMUNICATIONS TECHNOLOGIES Co. Patentee before: GUILIN XINTONG TECHNOLOGY Co.,Ltd. |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170524 Effective date of abandoning: 20220401 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170524 Effective date of abandoning: 20220401 |