CN204597214U - A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement - Google Patents
A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement Download PDFInfo
- Publication number
- CN204597214U CN204597214U CN201520317764.3U CN201520317764U CN204597214U CN 204597214 U CN204597214 U CN 204597214U CN 201520317764 U CN201520317764 U CN 201520317764U CN 204597214 U CN204597214 U CN 204597214U
- Authority
- CN
- China
- Prior art keywords
- output
- coupler
- circulator
- input
- isolator
- 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- Withdrawn - After Issue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
A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement, comprise multiple optical sender, laser, light signal wave multiplexer, Er-doped fiber, light signal channel-splitting filter, multiple optical receiver, first isolator, second isolator, first coupler, second coupler, first circulator, second circulator, polarized wave synthesizer, control unit, highly nonlinear optical fiber, Fiber Bragg Grating FBG and organize pump light more, a feedback loop configuration is formed between first circulator and the first coupler, second circulator and form again a feedback loop configuration between the first coupler and the second coupler, first isolator is connected between light signal wave multiplexer and the first coupler, second isolator is connected between Fiber Bragg Grating FBG and light signal channel-splitting filter.The utility model advantage is that pump power utilance is high, and the mutual interference between front stage pump light, flashlight is little, and control effects is good, and Raman gain coefficienct is large, and integrated level is higher, is more conducive to Miniaturization Design.
Description
Technical field:
The utility model relates to a kind of fiber amplifier, especially a kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement.
Background technology:
In optical communication system, due to the various losses that optical sensitivity change and the various optical component of the decay of light signal in transmitting procedure, optical dispersion, system are introduced, light signal cannot be detected, so must recover light signal by correct at receiving terminal.Traditional light-electrical-optical trunking scheme, after needs first carry out the signal transacting of complexity such as amplifying, reinvent in electrical domain, then transmit, and this transmission means device is complicated, cost is high, transmission quality is low.
Fiber amplifier replaces traditional light-electrical-optical trunking scheme, achieves in simple optical fiber and amplifies while multipath light signal, greatly reduce the cost of light relaying; Good being coupled can be realized with Transmission Fibers simultaneously, be therefore applied to optical WDM communication system on a large scale, substantially increase the information capacity and transmission range that can transmit in optical fiber.
Along with the progressively commercialization of core net 100G associated communication system, the demand of system to RFA (Raman Fiber Amplifier) increases day by day.Meanwhile, the gain media of RFA is exactly Transmission Fibers itself, can improve the Optical Signal To Noise Ratio (OpticalSignal Noise Ratio, OSNR) of system, but its cost performance is poor; And EDFA (erbium-doped fiber amplifier) to compare RFA noise factor large, but comparatively RFA is advantageously when power amplification.
Application number is 2012103258976, name is called " Now therefore to all whom it may concern and gain thereof, the method of adjustment of gain slope and device " utility application disclose a kind of Now therefore to all whom it may concern, this Now therefore to all whom it may concern comprises RFA and the EDFA not containing variable attenuator, RFA comprises pump signal wave multiplexer, pump laser group, be with outer narrow band filter and photodetector, EDFA comprises the input coupler connected in turn, Er-doped fiber, output coupler, input photodetector and output photoelectric detector, in addition, this Now therefore to all whom it may concern also comprises the control module adjusting gain and/or gain slope for EDFA and/or RFA according to expected magnification requirement cooperation control.Now therefore to all whom it may concern in above-mentioned utility model application is by control module cooperation control EDFA and RFA, thus expected magnification effect can be reached, in addition, because EDFA is not containing variable attenuator, the series of problems because variable attenuator brings can therefore be avoided.
Although RFA and EDFA cooperatively interacts by above-mentioned utility model application in a communications system, mutually compensating, still there are following three shortcomings in it:
1, raman amplifier itself is amplified by the light signal of nonlinear effect to transmission of optical fiber, be in the first order of the utility application of 2012103258976 at application number, pump light for amplifying optical signals also can be decayed gradually in transmission (amplification) process, when arriving second level EDFA, the power amplified for signal is very little.At this moment, just the pumping light power increasing the first order is needed to make the second level have enough large pumping light power for amplifying.Moreover when generally not explaining, raman amplifier is all distributed air-defense, and mean that nonlinear optical fiber length is at 10 km, like this, pumping light power is decayed more severe, and therefore the utilance of pumping light power is not high.
2, due to the mutual interference between pump light, and the mutual interference between pump light and flashlight, therefore can affect the control effects of fiber amplifier.
3, the fiber type of Raman Fiber Amplifier is not marked, also do not point out the particular type of optical fiber.G.652 the general single mode fiber that Raman Fiber Amplifier generally adopts is, but its Raman gain coefficienct is very little, amplifies not obvious, cannot meet the requirement of wavelength-division multiplex system.If run into the problems such as system noise again, signal to noise ratio also can sharp-decay.
Utility model content:
The technical problems to be solved in the utility model is, a kind of power utilization that can improve pumping is provided, reduce the mutual interference between the pump light of front stage, flashlight, improve control effects, and Raman gain coefficienct is large, integrated level is higher, is more conducive to the mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement of Miniaturization Design.
Technical solution of the present utility model is, a kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement with following structure is provided, it comprises multiple optical sender, laser, light signal wave multiplexer, Er-doped fiber, light signal channel-splitting filter and multiple optical receiver, wherein, fiber amplifier also comprises the first isolator, second isolator, first coupler, second coupler, first circulator, second circulator, polarized wave synthesizer, control unit, highly nonlinear optical fiber and organize pump light more, optical sender is connected with the input of light signal wave multiplexer with the output of laser simultaneously, the output of light signal wave multiplexer is connected with the input of the first isolator, the output of the first isolator and the output of the first circulator are connected with the input of the first coupler, Er-doped fiber is connected between the output of the first coupler and the first circulator input, highly nonlinear optical fiber is connected between the output of the first circulator and the input company of the second coupler, the output of polarized wave synthesizer is connected with the input of the second coupler, the output of the second coupler is connected with the input of the second circulator, the output of the second circulator is connected with the input of the second isolator, the output of the second isolator is connected with the input of light signal channel-splitting filter, the output of light signal channel-splitting filter is connected with each optical signal receiver respectively, the output of the second circulator is connected with the input of control unit, the output of control unit is connected with the input of the first coupler, the output of control unit is connected with pump light, the output of pump light is connected with the input of polarized wave synthesizer.。
After adopting said structure, compared with prior art, Advantageous Effects of the present utility model is embodied in following several aspect:
The bandwidth of 1, traditional erbium-doped fiber amplifier the highest about 30nm near its 1550nm characteristic wavelength is just not nearly enough have been used, and the amplified broad band of 50nm is had based on the raman amplifier of highly nonlinear optical fiber, and the advantages such as the output gain that Raman Fiber Amplifier itself has is high, the response time is fast, noise factor is low, Now therefore to all whom it may concern is formed after both cascades, not only can increase the amplification bandwidth of light signal, the signal that namely can realize across wave band amplifies, and can reduce the noise factor of whole optical amplifier system further.
2, unlike the prior art, the utility model adds two feedback loop configuration in Now therefore to all whom it may concern, namely the first circulator is to the feedback of the first coupler, and second circulator to the feedback of the first coupler and the second coupler, the structure of two feedback substantially increases the utilance of pump power of the present utility model.In addition, what the utility model adopted is discrete raman fiber amplifiers, fiber lengths (theoretical value) is about 400m, so just can the fiber reel required for discrete raman fiber amplifiers around in the draw-in groove of standard, the rack plate of the 1U of such as standard, thus also improve the utilance of pump power of the present utility model.
3, between the pump light that the utility model adopts isolator, these passive devices of coupler make front stage, flashlight, mutual interference reduction, effectively improves the control effects of system.
4, the highly nonlinear optical fiber that the utility model adopts is a kind of fiber medium of high Raman gain coefficienct, and the use of this highly nonlinear optical fiber can improve Raman gain coefficienct of the present utility model.In addition, be different from the distributed Raman fiber amplifier of prior art, the mixer amplifier that the utility model relates to is a kind of novel discrete raman fiber amplifiers, and this amplifier is more conducive to integrated, modularized design, thus has better market prospects.
A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement described in the utility model, wherein, is connected with Fiber Bragg Grating FBG between the output of the second circulator and the input of the second isolator.The effect of Fiber Bragg Grating FBG and the effect of isolator different, the backward pump light in the utility model can be propagated to both direction, after adding grating, the pump light of respective wavelength is reflected, thus further improves the utilance of backward pump.
A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement described in the utility model, wherein, highly nonlinear optical fiber can tellurate optical fiber, chalcogenide fiber, photonic crystal fiber, fluoride fiber, tellurate-photonic crystal fiber or sulfide-photonic crystal fiber.
Accompanying drawing illustrates:
Fig. 1 is the structural representation of a kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement of the utility model.
Specific embodiment:
Below in conjunction with the drawings and specific embodiments, a kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement of the utility model is described further:
As shown in Figure 1, in this specific embodiment, a kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement of the utility model comprises multiple optical sender 101, laser 201, light signal wave multiplexer 301, first isolator 401, second isolator 402, first coupler 501, second coupler 502, Er-doped fiber 601, first circulator 701, second circulator 702, highly nonlinear optical fiber 801, Fiber Bragg Grating FBG 901, light signal channel-splitting filter 1001, multiple optical receiver 1101, polarized wave synthesizer 1201, many groups pump light 1301 and control unit 1401.Optical sender 101 is connected with the input of light signal wave multiplexer 301 with the output of laser 201 simultaneously, and the output of light signal wave multiplexer 301 is connected with the input of the first isolator 401.The output of the first isolator 401 and the output of the first circulator 701 are connected with the input of the first coupler 501 simultaneously, and Er-doped fiber 601 is connected between the output of the first coupler 501 and the first circulator 701 input.Between the input that highly nonlinear optical fiber 801 is connected to the output of the first circulator 701 and the second coupler 502 connects, polarized wave synthesizer 1201 output be connected with the input of the second coupler 502.The output of the second coupler 502 is connected with the input of the second circulator 702, Fiber Bragg Grating FBG 901 is connected between the output of the second circulator 702 and the input of the second isolator 402, and the output of the second isolator 402 is connected with the input of light signal channel-splitting filter 1001.The output 1001 of light signal channel-splitting filter is connected with each optical signal receiver 1101 respectively, and the output of the second circulator 702 is connected with the input of control unit 1401.The output of control unit 1401 is connected with the input of the first coupler 501, and the output of control unit 1401 is connected with pump light 1301, and the output of pump light 1301 is connected with the input of polarized wave synthesizer 1201.Highly nonlinear optical fiber 801 in this specific embodiment is tellurate optical fiber.
Operation principle of the present utility model is: enter light signal wave multiplexer 301 together with the pump light that flashlight produces with laser 201 after optical sender 101 produces and carry out conjunction ripple.In the present embodiment, the wave-length coverage of the flashlight chosen is 1525nm ~ 1625nm, and each wavelength interval is 6.25nm, totally 16 channels, and each signal light power is 0.01mW.The pump wavelength that laser 201 produces is 1480nm, and luminous power is 500mW.The priority (yield value is preferential, or smooth value is preferential or consider) of optimization is first set on controller and control unit 1401.Then, the flashlight after synthesis, after the first isolator 401, enters the first coupler 501 and is coupled, then through Er-doped fiber 601, light signal is amplified together with the light signal that two branch roads feed back.Light signal after amplification enters the first circulator 701, and a part is sent to the first coupler 501 as light signal fed back, and a part enters highly nonlinear optical fiber 801 as original optical signal in addition.Pump light closes ripple via polarized wave synthesizer 1201, enters highly nonlinear optical fiber 801, carry out stimulated Raman scattering effect with flashlight on optical fiber via the second coupler 502 from backward, and the power of flashlight is amplified; The light signal exported enters control unit 1401 through the second circulator 702, and after being calculated by the parameter of control unit 1401 pairs of pump lights, obtain suitable result, a part send the first coupler 501, and another part send the second coupler 502, carries out duplex feedback; Go round and begin again like this, reach optimum value until meet.After reaching optimum value, flashlight will from the second circulator 702 out, and be received by optical receiver 1101 successively after Fiber Bragg Grating FBG 901, second isolator 402 and light signal channel-splitting filter 1001.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection range that the utility model claims determine.
Claims (3)
1. the mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement, it comprises multiple optical sender (101), laser (201), light signal wave multiplexer (301), Er-doped fiber (601), light signal channel-splitting filter (1001) and multiple optical receiver (1101), it is characterized in that: fiber amplifier also comprises the first isolator (401), second isolator (402), first coupler (501), second coupler (502), first circulator (701), second circulator (702), polarized wave synthesizer (1201), control unit (1401), highly nonlinear optical fiber (801) and organize pump light (1301) more, described optical sender (101) is connected with the input of light signal wave multiplexer (301) with the output of laser (201) simultaneously, the output of described light signal wave multiplexer (301) is connected with the input of the first isolator (401), the output of described first isolator (401) and the output of the first circulator (701) are connected with the input of the first coupler (501), described Er-doped fiber (601) is connected between the output of the first coupler (501) and the first circulator (701) input, described highly nonlinear optical fiber (801) is connected between the output of the first circulator (701) and the input company of the second coupler (502), the output of described polarized wave synthesizer (1201) is connected with the input of the second coupler (502), the output of described second coupler (502) is connected with the input of the second circulator (702), the output of described second circulator (702) is connected with the input of the second isolator (402), the output of described second isolator (402) is connected with the input of light signal channel-splitting filter (1001), the output (1001) of described light signal channel-splitting filter is connected with each optical signal receiver (1101) respectively, the output of described second circulator (702) is connected with the input of control unit (1401), the output of described control unit (1401) is connected with the input of the first coupler (501), the output of described control unit (1401) is connected with pump light (1301), the output of described pump light (1301) is connected with the input of polarized wave synthesizer (1201).
2. a kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement according to claim 1, is characterized in that: be connected with Fiber Bragg Grating FBG (901) between the output of described second circulator (702) and the input of the second isolator (402).
3. a kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement according to claim 1 and 2, is characterized in that: described highly nonlinear optical fiber (801) is tellurate optical fiber, chalcogenide fiber, photonic crystal fiber, fluoride fiber, tellurate-photonic crystal fiber or sulfide-photonic crystal fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317764.3U CN204597214U (en) | 2015-05-15 | 2015-05-15 | A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520317764.3U CN204597214U (en) | 2015-05-15 | 2015-05-15 | A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204597214U true CN204597214U (en) | 2015-08-26 |
Family
ID=53933328
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520317764.3U Withdrawn - After Issue CN204597214U (en) | 2015-05-15 | 2015-05-15 | A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204597214U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821481A (en) * | 2015-05-15 | 2015-08-05 | 中国电子科技集团公司第八研究所 | Mixed discrete-type high-nonlinearity optical fiber amplifier based on double-feedback structure |
| CN108494543A (en) * | 2018-01-09 | 2018-09-04 | 杭州电子科技大学 | A kind of chaos intercommunication system with relaying based on electric light negative-feedback |
-
2015
- 2015-05-15 CN CN201520317764.3U patent/CN204597214U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821481A (en) * | 2015-05-15 | 2015-08-05 | 中国电子科技集团公司第八研究所 | Mixed discrete-type high-nonlinearity optical fiber amplifier based on double-feedback structure |
| CN104821481B (en) * | 2015-05-15 | 2017-08-25 | 中国电子科技集团公司第八研究所 | A kind of mixing discrete highly nonlinear optical fiber amplifier based on double feedback arrangements |
| CN108494543A (en) * | 2018-01-09 | 2018-09-04 | 杭州电子科技大学 | A kind of chaos intercommunication system with relaying based on electric light negative-feedback |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105262540B (en) | Multi-wavelength single span section transmission method and system | |
| CN111698033B (en) | Hybrid optical fiber amplifier, optical signal amplification method, and optical communication system | |
| CN102404053B (en) | Optical fiber communication system capable of simultaneously realizing remote pump amplification and Raman amplification | |
| US8055130B2 (en) | Optical transceiver amplifier | |
| US20230059478A1 (en) | Amplified hollow core fiber transmission | |
| CN205304807U (en) | Fine amplifier of mixed light based on EDFA with cascade RFA | |
| CN104009801A (en) | Optical signal processing method and apparatus for optical network | |
| CN204597214U (en) | A kind of mixing discrete highly nonlinear optical fiber amplifier based on two feedback arrangement | |
| WO2020056264A1 (en) | Bismuth doped fiber amplifier | |
| Mikhailov et al. | Amplified transmission beyond C-and L-bands: doped fibre amplifiers for 1250–1450 nm range | |
| Khaki et al. | Transient correction using EDFA: in-line optical fiber with feedback | |
| CN104821481A (en) | Mixed discrete-type high-nonlinearity optical fiber amplifier based on double-feedback structure | |
| CN107196180A (en) | Cascade long-range optical amplification system | |
| US5937126A (en) | Optically amplifying/repeating transmission system and optical amplifier | |
| CN204131527U (en) | A kind of raman amplifier based on the cascade of As-S and As-Se optical fiber | |
| CN203661069U (en) | A gain spectrum flattening Raman optical fiber amplifier based on tellurite-based optical fibers | |
| Zhu et al. | High-Capacity 400Gb/s Real-Time Transmission over SCUBA110 Fibers for DCI/Metro/Long-haul Networks | |
| CN203673196U (en) | Tellurite-based optical fiber Raman amplification controller with flat gain | |
| CN2381070Y (en) | Cascade erbium-mixed optical-fiber amplified pump light-source switch-in apparatus | |
| CN1327286C (en) | Multifunctional optical amplifier | |
| CN207010683U (en) | A kind of repeatless transmission system with compound shared pumping source | |
| CN207010684U (en) | Repeatless transmission system with compound shared pumping source | |
| CN110176711B (en) | Erbium-doped optical fiber amplifier with S wave band, C wave band and L wave band | |
| CN207009889U (en) | Cascade long-range optical amplification system | |
| CN203661068U (en) | A gain-flattened As-S optical fiber Raman amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150826 Effective date of abandoning: 20170825 |
|
| AV01 | Patent right actively abandoned |