CN203551924U - Erbium-doped photonic crystal fiber amplifier - Google Patents
Erbium-doped photonic crystal fiber amplifier Download PDFInfo
- Publication number
- CN203551924U CN203551924U CN201320649264.0U CN201320649264U CN203551924U CN 203551924 U CN203551924 U CN 203551924U CN 201320649264 U CN201320649264 U CN 201320649264U CN 203551924 U CN203551924 U CN 203551924U
- Authority
- CN
- China
- Prior art keywords
- doped
- photonic crystal
- optical fiber
- doped photonic
- crystal 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Lasers (AREA)
Abstract
The utility model is suitable for the technical field of optical amplifiers and provides an erbium-doped photonic crystal fiber amplifier. The erbium-doped photonic crystal fiber amplifier comprises a pump light source, a first isolator, a coupler, an optical fiber circulator, a wavelength division multiplexer, an erbium-doped photonic crystal fiber and a second isolator, wherein the pump light source is connected to the wavelength division multiplexer for emitting pump light of the erbium-doped photonic crystal fiber; the first isolator is connected to the coupler for unidirectional transmission of input signal light; signal light is divided into two parts by the coupler, one part of the signal light is coupled to the erbium-doped photonic crystal fiber through the wavelength division multiplexer, and the other part of the signal light is returnedto the erbium-doped photonic crystal fiber through the optical fiber circulator and isamplified ; the signal light is amplified under the effect of the pump light by the erbium-doped photonic crystal fiber. The erbium-doped photonic crystal fiberamplifier has the advantages of simple structure, low cost, convenience for operation, and capabilities of improving amplification gain and reducing a noise coefficient.
Description
Technical field
The utility model belongs to optical amplifier technology field, relates in particular to a kind of er-doped photon crystal optical fiber amplifier.
Background technology
At present for the image intensifer of optical fiber communication, there are semiconductor laser amplifier, nonlinear optical fiber amplifier and doped optical fibre amplifier etc. in practice.Wherein doped optical fibre amplifier plays a very important role in optical fiber communication, and doped optical fibre amplifier utilization doping ion forms population inversion and distributes under pump light effect, when have incident optical signal by time realize the amplification to incident optical signal.Doped optical fibre amplifier is the most ripe at present, applies the most successful and image intensifer the most widely.
But current doped optical fibre amplifier is because gain amplifier is smooth not, noise figure is large, output power is little and can not meet the requirement of actual use.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of er-doped photon crystal optical fiber amplifier, is intended to solve the problem that fiber amplifier gain of the prior art is smooth not, noise figure is large.
The utility model is achieved in that a kind of er-doped photon crystal optical fiber amplifier, comprises pump light source, the first isolator, coupling mechanism, optical fiber circulator, wavelength division multiplexer, er-doped photonic crystal fiber and the second isolator;
The output terminal of described pump light source connects the input end of described wavelength division multiplexer, for generation of pump light that can pumping er-doped photonic crystal fiber, and described pump light is transported to described er-doped photonic crystal fiber by described wavelength division multiplexer;
The input end of described the first isolator is as the input end of flashlight, and output terminal connects the input end of described coupling mechanism, for making the flashlight one-way transmission of input;
The first output terminal of described coupling mechanism connects the input end of described wavelength division multiplexer, the second output terminal of described coupling mechanism connects described optical fiber circulator, for the flashlight passing through is divided into two parts, wherein a part of flashlight is coupled in er-doped photonic crystal fiber by described wavelength division multiplexer, and another part flashlight is that reverse spontaneous emission light is turned back in described er-doped photonic crystal fiber and amplified by described optical fiber circulator;
The output terminal of described wavelength division multiplexer connects er-doped photonic crystal fiber, and described pump light is coupled in er-doped photonic crystal fiber;
Described er-doped photonic crystal fiber is realized the amplification to flashlight under the effect of described pump light;
The input end of described the second isolator is connected with the output terminal of described er-doped photonic crystal fiber, and output terminal, as the output terminal of flashlight, makes flashlight one-way transmission and guarantees to return without backlight.
Further, described er-doped photon crystal optical fiber amplifier also comprises wave filter, and described wave filter is connected between described er-doped photonic crystal fiber and described the second isolator, the light for filtering except centre wavelength.
Further, described pump light source is the tunable light source that the pump light wavelength that sends is 980nm.
Further, the coupling ratio of described coupling mechanism is 10:90.
Further, the wavelength division multiplexer that described wavelength division multiplexer is 980/1550.
Further, the length of described er-doped photonic crystal fiber is 9m, and erbium ion-doped concentration is 1000ppm.
Further, the centre wavelength of described wave filter is 1530nm.
Er-doped photon crystal optical fiber amplifier described in the utility model is used er-doped photonic crystal fiber as amplifying medium, under the effect of pump light source, realize and amplifying, and utilize reverse spontaneous emission light to strengthen signal input, thereby obtain the gain of better effect and less noise figure.Described er-doped photon crystal optical fiber amplifier is simple in structure simultaneously, and cost is low, easy to operate.
Accompanying drawing explanation
Fig. 1 is the connection diagram of the utility model er-doped photon crystal optical fiber amplifier.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Er-doped photon crystal optical fiber amplifier described in the utility model is realized the amplification of flashlight under the effect of pump light source as amplifying medium by er-doped photonic crystal fiber, use optical fiber circulator that reverse ASE noise (being reverse spontaneous emission light) is turned back in er-doped photonic crystal fiber and again amplified simultaneously, use isolator to make flashlight one-way transmission etc. can obtain high-gain, amplifying signal light that noise figure is little.
As shown in Figure 1, a kind of er-doped photon crystal optical fiber amplifier, comprises pump light source 101, the first isolator 102, coupling mechanism 103, wavelength division multiplexer 104, er-doped photonic crystal fiber 105, the second isolator 107 and optical fiber circulator 108.The output terminal of described pump light source 101 connects the input end of described wavelength division multiplexer 104, for generation of pump light that can pumping er-doped photonic crystal fiber 105, and described pump light is transported to described er-doped photonic crystal fiber 105 by described wavelength division multiplexer 104.The input end of described the first isolator 102 is as the input end of flashlight, and output terminal connects the input end of described coupling mechanism 103, for making the flashlight one-way transmission of input.The first output terminal of described coupling mechanism 103 connects the input end of described wavelength division multiplexer 104, the second output terminal of described coupling mechanism 103 connects described optical fiber circulator 108, coupling mechanism 103 is for being divided into two parts by the flashlight passing through, wherein a part of flashlight is coupled in er-doped photonic crystal fiber 105 by described wavelength division multiplexer 104, and another part flashlight is that reverse spontaneous emission light is turned back in described er-doped photonic crystal fiber 105 and amplified by described optical fiber circulator 108.The output terminal of described wavelength division multiplexer 104 connects er-doped photonic crystal fiber 105, and described pump light is coupled in er-doped photonic crystal fiber 105.Described er-doped photonic crystal fiber 105 is realized the amplification to flashlight under the effect of described pump light, utilizes er-doped photonic crystal fiber 105(ED-PCF) as amplification medium, can improve the performance of amplifier.The input end of described the second isolator 107 is connected with the output terminal of described er-doped photonic crystal fiber 105, and output terminal, as the output terminal of flashlight, makes flashlight one-way transmission and guarantees to return without backlight, and described output terminal can be connected with light power meter.
The amplification principle of er-doped photonic crystal fiber is: under erbium ion normal temperature in ground state, under the effect of pump light, produce excited absorption and be excited to excited state, then most excited ions by non-radiative to a metastable state, erbium ion is realized particle reversion between metastable state and ground state, form the upper and lower energy level of laser, corresponding wavelength is near 1550nm.When near flashlight 1550nm passes through, the erbium ion in upper energy level will produce stimulated radiation, thereby realize the amplification to flashlight.
Combine with above-described embodiment, described er-doped photon crystal optical fiber amplifier also comprises wave filter 106, described wave filter 106 is connected between described er-doped photonic crystal fiber 105 and described the second isolator 107, for the light of filtering except centre wavelength, can reduce reverse spontaneous radiation (ASE) noise.
On the basis of the above, by improving or can obtaining better effect for each device arranges suitable parameter.The design parameter that below can select for each device: the tunable light source that described pump light source 101 is 980nm for the pump light wavelength that sends, peak power output is 500mw.The coupling ratio of described coupling mechanism 103 is 10:90.The wavelength division multiplexer that described wavelength division multiplexer 104 is 980/1550.Through comparing with other fiber lengths, preferred, the length of described er-doped photonic crystal fiber 105 is 9m, and erbium ion-doped concentration is 1000ppm, and flashlight input wavelength is 1530nm.The centre wavelength of described wave filter 106 is 1530nm.
The course of work of described er-doped photon crystal optical fiber amplifier is as follows: flashlight is from the input end input of the first isolator 102, and when directly connecing light power meter, can record power input is P
in; When the input end of unsettled described the first isolator 102, it is P that output terminal connection light power meter can record ASE power
aSE; When the input end input of flashlight from the first isolator 102, it is P that output terminal can record output power while connecting light power meter
out, pass through formula
With
Can calculate respectively output gain and noise figure, G in formula (dB) represents gain, and NF (dB) represents noise figure, and h is Planck's constant, and v is light frequency, B
0be effective bandwidth, the luminous power that changes input signal light can obtain different output gain amplifiers and noise figure.
The highest-gain that described er-doped photon crystal optical fiber amplifier can be realized is 25dB, and lowest noise coefficient is 1.5dB.Because described er-doped photon crystal optical fiber amplifier is consistent with the minimal losses window of optical fiber, and have gain high, be with the advantages such as roomy, noise is low, good operating stability, the node amplifier can be used as in power amplifier, prime amplifier, light relaying and the Access Network of transmitter uses, and has a wide range of applications potentiality.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. an er-doped photon crystal optical fiber amplifier, is characterized in that, comprises pump light source, the first isolator, coupling mechanism, optical fiber circulator, wavelength division multiplexer, er-doped photonic crystal fiber and the second isolator;
The output terminal of described pump light source connects the input end of described wavelength division multiplexer, for generation of pump light that can pumping er-doped photonic crystal fiber, and described pump light is transported to described er-doped photonic crystal fiber by described wavelength division multiplexer;
The input end of described the first isolator is as the input end of flashlight, and output terminal connects the input end of described coupling mechanism, for making the flashlight one-way transmission of input;
The first output terminal of described coupling mechanism connects the input end of described wavelength division multiplexer, the second output terminal of described coupling mechanism connects described optical fiber circulator, for the flashlight passing through is divided into two parts, wherein a part of flashlight is coupled in er-doped photonic crystal fiber by described wavelength division multiplexer, and another part flashlight is that reverse spontaneous emission light is turned back in described er-doped photonic crystal fiber and amplified by described optical fiber circulator;
The output terminal of described wavelength division multiplexer connects er-doped photonic crystal fiber, and described pump light is coupled in er-doped photonic crystal fiber;
Described er-doped photonic crystal fiber is realized the amplification to flashlight under the effect of described pump light;
The input end of described the second isolator is connected with the output terminal of described er-doped photonic crystal fiber, and output terminal is exported for flashlight as the output terminal of amplifier, makes flashlight one-way transmission and guarantees to return without backlight.
2. er-doped photon crystal optical fiber amplifier according to claim 1, it is characterized in that, described er-doped photon crystal optical fiber amplifier also comprises wave filter, between described er-doped photonic crystal fiber and described the second isolator, by described wave filter, connect the light for filtering except centre wavelength.
3. er-doped photon crystal optical fiber amplifier according to claim 1, is characterized in that, described pump light source is the tunable light source that the pump light wavelength that sends is 980nm.
4. er-doped photon crystal optical fiber amplifier according to claim 1, is characterized in that, the coupling ratio of described coupling mechanism is 10:90.
5. er-doped photon crystal optical fiber amplifier according to claim 1, is characterized in that, the wavelength division multiplexer that described wavelength division multiplexer is 980/1550.
6. er-doped photon crystal optical fiber amplifier according to claim 1, is characterized in that, the length of described er-doped photonic crystal fiber is 9m, and erbium ion-doped concentration is 1000ppm.
7. er-doped photon crystal optical fiber amplifier according to claim 2, is characterized in that, the centre wavelength of described wave filter is 1530nm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649264.0U CN203551924U (en) | 2013-10-18 | 2013-10-18 | Erbium-doped photonic crystal fiber amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320649264.0U CN203551924U (en) | 2013-10-18 | 2013-10-18 | Erbium-doped photonic crystal fiber amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203551924U true CN203551924U (en) | 2014-04-16 |
Family
ID=50470016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320649264.0U Expired - Fee Related CN203551924U (en) | 2013-10-18 | 2013-10-18 | Erbium-doped photonic crystal fiber amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203551924U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071212A (en) * | 2015-08-31 | 2015-11-18 | 华南理工大学 | Fiber laser intensity noise suppressing device and working method thereof |
| CN107515018A (en) * | 2017-08-09 | 2017-12-26 | 武汉理工大学 | Kagome Hollow-Core Photonic Crystal Fibers sensor and sensor-based system |
| CN107968312A (en) * | 2018-01-15 | 2018-04-27 | 深圳大学 | One kind mixes bait Photonic Crystal Fiber Lasers |
| CN109687272A (en) * | 2019-03-01 | 2019-04-26 | 电子科技大学 | Er-doped microsphere laser device based on Microsphere Cavities feedback |
| CN111490443A (en) * | 2020-02-24 | 2020-08-04 | 厦门彼格科技有限公司 | ASE light source with low ripple and high power |
-
2013
- 2013-10-18 CN CN201320649264.0U patent/CN203551924U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105071212A (en) * | 2015-08-31 | 2015-11-18 | 华南理工大学 | Fiber laser intensity noise suppressing device and working method thereof |
| CN107515018A (en) * | 2017-08-09 | 2017-12-26 | 武汉理工大学 | Kagome Hollow-Core Photonic Crystal Fibers sensor and sensor-based system |
| CN107968312A (en) * | 2018-01-15 | 2018-04-27 | 深圳大学 | One kind mixes bait Photonic Crystal Fiber Lasers |
| CN107968312B (en) * | 2018-01-15 | 2023-12-05 | 深圳大学 | Erbium-doped photonic crystal fiber laser |
| CN109687272A (en) * | 2019-03-01 | 2019-04-26 | 电子科技大学 | Er-doped microsphere laser device based on Microsphere Cavities feedback |
| CN111490443A (en) * | 2020-02-24 | 2020-08-04 | 厦门彼格科技有限公司 | ASE light source with low ripple and high power |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Hu et al. | Performance of high-concentration Er/sup 3+/-Yb/sup 3+/-codoped phosphate fiber amplifiers | |
| CN203551924U (en) | Erbium-doped photonic crystal fiber amplifier | |
| CN202217909U (en) | Single-pumping double-stage amplification erbium-doped optical fiber amplifier | |
| CN106356704A (en) | 0.9-micron waveband high-power and single-frequency optical fiber laser device | |
| US6490077B1 (en) | Composite optical amplifier | |
| CN108493748B (en) | ytterbium-Raman mixed gain random fiber laser based on fiber core pumping | |
| CN103401132B (en) | A kind of narrow linewidth distributed feed-back optical fiber laser amplifier | |
| CN101908707B (en) | Optical amplifier and a method of light amplification | |
| CN205377007U (en) | Erbium doped fiber amplifier of high -efficient pumping | |
| CN103199417A (en) | Rare earth doping optical fiber light source light path structure | |
| CN100535730C (en) | L wave band bilateral backward pump erbium-doped optical fiber amplifier | |
| KR100326039B1 (en) | Fiber amplifier having absorber | |
| CN111628402A (en) | MOPA fiber laser | |
| WO2023071306A1 (en) | Amplifier and system | |
| CN106067654B (en) | 1950nm laser-based far-end pumping erbium-doped optical fiber amplifier | |
| CN103872558B (en) | All-fiber double-wavelength mid-infrared laser | |
| CN202957448U (en) | Middle and far-infrared super-continuum spectrum fiber laser | |
| CN102394466B (en) | All-fiber thulium-mixed laser with tunable wide brand | |
| Muhd-Yassin et al. | 56 dB Gain EYDFA with improved noise figure with dual-stage partial double pass configuration | |
| CN204088866U (en) | Use the Gao Zhongying mode locked fiber laser that phosphate Er-doped fiber is gain media | |
| CN106785833A (en) | A kind of erbium-doped fiber amplifier of power limiting gain controllable | |
| CN205863636U (en) | A kind of far-end pump erbium-doped optical fiber amplifier based on 1950nm laser instrument | |
| CN106532419B (en) | Erbium-doped optical fiber amplifier of far-end pumping of optical fiber Raman laser | |
| CN109256662A (en) | Based on gain competition and with the L-band high power fiber laser with pumping | |
| CN205231453U (en) | 1550nm transfers Q pulse erbium -ytterbium co -doped fiber laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20141018 |
|
| EXPY | Termination of patent right or utility model |