CN206629067U - A kind of faint light remote-pumped amplifier based on double 1480nm lasers - Google Patents
A kind of faint light remote-pumped amplifier based on double 1480nm lasers Download PDFInfo
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- CN206629067U CN206629067U CN201720367853.8U CN201720367853U CN206629067U CN 206629067 U CN206629067 U CN 206629067U CN 201720367853 U CN201720367853 U CN 201720367853U CN 206629067 U CN206629067 U CN 206629067U
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Abstract
The utility model is that a kind of faint light remote-pumped amplifier based on double 1480nm lasers includes optical sender, power amplifier, photoreceiver and Transmission Fibers, optical sender launches optical signal, enter 75~100km Transmission Fibers by power amplifier, deliver to loss and be less than or 30dB application facility, the faint optical signal that application facility exports again are introduced into passive remote-pumped amplifier, optical signal transmission fiber and image intensifer through 75~100km again, it is sent into photoreceiver.Pump transmission optical fiber of the passive remote-pumped amplifier respectively through 2 75~100km connects 2 1480nm lasers as pumping source.The applicable Measures for Weak Light Signal Power of the utility model can be as small as 38dBm, and the optical signal signal to noise ratio for reaching receiver reaches 16dB, meets the signal to noise ratio requirement of preamplifier demand, and relative intensity noise reaches 100dB, meets the requirement of demodulation techniques；And application easy to implement.
Description
Technical field
It the utility model is related to a kind of fiber amplifier technology, and in particular to one for non-relay small-signal amplification system
Faint light remote-pumped amplifier of the kind based on double 1480nm lasers.
Background technology
It is often below -30dBm, even up to -40dBm in faint optical signal system optical signal, in general is all that use has
Source light amplification is solved.The environment of such faint optical signal system is general all more complicated, and requires that service life is grown, can one
A little occasions do not apply to active scheme and solved, and lack effective amplification means.The faint image intensifer implementation of in general is answered at present
It is miscellaneous, it is necessary to which many technologies compensate and reliability is relatively low.It is at present more use the input in receiver set preamplifier with
Amplify faint optical signal, but such a method its OSNR can only achieve 8dB, and relative intensity noise reaches -80dB, can not meet
Demodulation techniques requirement.
Utility model content
The shortcomings that in order to overcome existing faint optical signal amplification system complexity and low reliability, the purpose of this utility model is
A kind of faint light remote-pumped amplifier based on double 1480nm lasers, transmission of the laser through long range of 1480nm lasers are provided
Optical fiber, into remote-pumped amplifier as pump light, the acquisition gain of this remote-pumped amplifier is higher and has higher signal to noise ratio.
A kind of faint light remote-pumped amplifier based on double 1480nm lasers of the utility model design includes optical sender,
Power amplifier, photoreceiver and Transmission Fibers, optical sender transmitting optical signal, enter 75~100km by power amplifier
Transmission Fibers, deliver to loss and be less than or 30dB application facility, the faint optical signal that application facility exports again are introduced into passive
Remote-pumped amplifier, then optical signal transmission fiber and image intensifer through 75~100km, it is sent into photoreceiver.The passive remote pump
Pump transmission optical fiber of the amplifier respectively through 2 75~100km connects 2 1480nm lasers as pumping source.
Centered on the 1480nm lasers wavelength be 1480 ± 2nm, power output be 30.8dBm~31.8dBm (or
1.2W~1.5W) optical fiber output laser.To meet the needs of this remote pump gain amplifier, because only being exceeded with a power
Strong nonlinear effect occurs in 1.5W lasers.
The power amplifier is power output >=12dBm EDFA Erbium-Doped Fiber Amplifier.
Described Transmission Fibers, optical signal transmission fiber and pump transmission optical fiber is G.652 optical fiber or G.655 optical fiber.
Described application facility is detection sensor array, underwater gas transportation pipeline optical fiber leak detection array or fibre optic hydrophone battle array
Row etc..
The remote-pumped amplifier is the passive erbium-doped fiber amplifier for comprising only light path part.
The image intensifer is Pre-EDFA or backward pump raman amplifier.The backward pump Raman
Amplifier is the Raman Fiber Amplifier of 1455nm laser pump (ing)s.
The photoreceiver and 2 1480nm lasers as pumping source are positioned in same place computer room, pumping source
Transmission Fibers are identical with the length of optical signal transmission fiber.
Compared with prior art, a kind of faint light remote-pumped amplifier based on double 1480nm lasers of the utility model is excellent
Put and be：1st, a kind of effective technology scheme of faint optical amplification system is provided, its Measures for Weak Light Signal Power can be as small as -38dBm, arrive
Optical signal signal to noise ratio up to receiver can reach 16dB, meet the signal to noise ratio requirement of preamplifier demand, and relative intensity
Noise reaches -100dB, reaches the requirement of demodulation techniques；2nd, formed using existing part, application easy to implement.
Brief description of the drawings
Fig. 1 is the faint light remote-pumped amplifier example structure schematic diagram based on double 1480nm lasers.
Each map logo is as follows in figure：
Tx, optical sender, BA, power amplifier, SENSORS, detection sensor array, FA, remote-pumped amplifier, LA,
Raman Fiber Amplifier, 1480nmPY, 1480nm pumping source, Rx, photoreceiver.
Embodiment
Based on double 1480nm lasers faint light remote-pumped amplifier embodiment as shown in figure 1,
Optical sender Tx transmitting optical signals are by the EDFA Erbium-Doped Fiber Amplifier power output as power amplifier BA
12dBm optical signal, 20dB is lost by the single-mode transmission optical fibers of 100km G.652, has been left optical signal power -8dBm, send
To the detection sensor array SENSORS that Insertion Loss is 30dB, application facility output Measures for Weak Light Signal Power is only -38dBm.It is micro-
Low light signals enter remote-pumped amplifier FA.This example remote-pumped amplifier FA is passive erbium-doped fiber amplifier, and 2 centre wavelengths are
1480 ± 2nm, power output are 30.8dBm~31.8dBm, optical fiber output laser as 1480nm pumping sources
1480nmPY, connect remote-pumped amplifier FA through the mode pump Transmission Fibers of 2 100km G.652 respectively.Remote-pumped amplifier FA
The optical signal signal to noise ratio of output reaches 16dB, then through 100km single mode optical signal transmission fibers G.652 and by 1455nm laser
The Raman Fiber Amplifier LA amplifications of pumping, are sent into photoreceiver Rx.The optical signal signal to noise ratio for reaching receiver Rx reaches 16dB,
And relative intensity noise reaches -100dB.
Above-described embodiment, only the purpose of this utility model, technical scheme and beneficial effect are further described
Specific case, the utility model are not limited to this.All any modifications made within scope of disclosure of the present utility model,
Equivalent substitution, improvement etc., are all contained within the scope of protection of the utility model.
Claims (9)
1. a kind of faint light remote-pumped amplifier based on double 1480nm lasers, including optical sender, power amplifier, light-receiving
Machine and Transmission Fibers, it is characterised in that：
The optical sender (Tx) launches optical signal, and 75~100km Transmission Fibers are entered by power amplifier (BA), are delivered to
Loss is less than or 30dB application facility (SENSORS), the faint optical signal that application facility (SENSORS) exports again are introduced into nothing
Source remote-pumped amplifier (FA), then the optical signal transmission fiber through 75~100km and image intensifer (LA), it is sent into photoreceiver
(Rx)；Pump transmission optical fiber of the passive remote-pumped amplifier (FA) respectively through 2 75~100km connects 2 as pumping source
Individual 1480nm lasers (1480nmPY).
2. the faint light remote-pumped amplifier according to claim 1 based on double 1480nm lasers, it is characterised in that：
Centered on the 1480nm lasers (1480nmPY) wavelength be 1480 ± 2nm, power output be 30.8dBm~
31.8dBm, optical fiber output laser.
3. the faint light remote-pumped amplifier according to claim 1 based on double 1480nm lasers, it is characterised in that：
The power amplifier (BA) is power output >=12dBm EDFA Erbium-Doped Fiber Amplifier.
4. the faint light remote-pumped amplifier according to claim 1 based on double 1480nm lasers, it is characterised in that：
Described Transmission Fibers, optical signal transmission fiber and pump transmission optical fiber is G.652 optical fiber or G.655 optical fiber.
5. the faint light remote-pumped amplifier according to claim 1 based on double 1480nm lasers, it is characterised in that：
Described application facility (SENSORS) is detection sensor array, underwater gas transportation pipeline optical fiber leak detection array or optical fiber water
Listen device array.
6. the faint light remote-pumped amplifier according to claim 1 based on double 1480nm lasers, it is characterised in that：
The remote-pumped amplifier (FA) is the passive erbium-doped fiber amplifier for comprising only light path part.
7. the faint light remote-pumped amplifier according to claim 1 based on double 1480nm lasers, it is characterised in that：
The image intensifer (LA) is Pre-EDFA or backward pump raman amplifier.
8. the faint light remote-pumped amplifier according to claim 7 based on double 1480nm lasers, it is characterised in that：
The backward pump raman amplifier is the Raman Fiber Amplifier of 1455nm laser pump (ing)s.
9. the faint light remote-pumped amplifier according to claim 1 based on double 1480nm lasers, it is characterised in that：
The photoreceiver (Rx) and 2 1480nm lasers (1480nmPY) as pumping source are positioned over same place computer room
Interior, pump transmission optical fiber is identical with the length of optical signal transmission fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367853.8U CN206629067U (en) | 2017-04-10 | 2017-04-10 | A kind of faint light remote-pumped amplifier based on double 1480nm lasers |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720367853.8U CN206629067U (en) | 2017-04-10 | 2017-04-10 | A kind of faint light remote-pumped amplifier based on double 1480nm lasers |
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| CN206629067U true CN206629067U (en) | 2017-11-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911394A (en) * | 2017-04-10 | 2017-06-30 | 中国电子科技集团公司第三十四研究所 | A kind of faint light remote-pumped amplifier based on double 1480nm lasers |
-
2017
- 2017-04-10 CN CN201720367853.8U patent/CN206629067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106911394A (en) * | 2017-04-10 | 2017-06-30 | 中国电子科技集团公司第三十四研究所 | A kind of faint light remote-pumped amplifier based on double 1480nm lasers |
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