CN207265407U - A kind of high-power ASE light sources of flat type c band - Google Patents
A kind of high-power ASE light sources of flat type c band Download PDFInfo
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- CN207265407U CN207265407U CN201721200020.9U CN201721200020U CN207265407U CN 207265407 U CN207265407 U CN 207265407U CN 201721200020 U CN201721200020 U CN 201721200020U CN 207265407 U CN207265407 U CN 207265407U
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- light sources
- ase light
- flat type
- power
- bundling device
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Abstract
It the utility model is related to a kind of high-power ASE light sources of flat type c band, including at least one multimode pump laser, bundling device, erbium ytterbium doubly clad optical fiber, gain smoothing filter and speculum；The pumping end of multimode pump laser and bundling device connects；The signal end of bundling device is connected with gain smoothing filter, speculum successively；The output terminal of bundling device is connected with the input terminal of erbium ytterbium doubly clad optical fiber；The output terminal output ASE light of erbium ytterbium doubly clad optical fiber.The ASE light sources of the utility model can improve output power, improve temperature characterisitic, realize the flat output in c band.
Description
Technical field
It the utility model is related to technical field of optical fiber, more particularly to a kind of high-power ASE light sources of flat type c-band.
Background technology
ASE (amplified spontaneous emission) light source mainly includes gain media optical fiber and pump laser, and gain media optical fiber leads to
Often doped with rare earth ion, such as erbium ion, ytterbium ion, neodymium ion, under pumping light action, rare earth ion by low-lying level base
State transits to the excitation state of high level, and the ion of the excitation state in high level is unstable, in no any ectocine
Under, they spontaneously, independently can return to low-lying level from high level, while release energy and be changed into radiant light, that is, be produced from
Hair radiation, the wavelength of spontaneous radiation are determined by high low energy level difference.
C-band refers to the wave band that output wavelength scope is 1525~1565nm.Er-doped fiber pump light (be usually
The pump light of 980nm and 1480nm) excitation under, can have very strong amplified spontaneous emission in the range of 1520~1615nm,
Conventional c-band ASE light sources use the Er-doped fiber of fibre core pumping as gain media at present, but low there are output power
(maximum is only hundreds of mW), the flatness of spectrum is poor, pumping-signal transfer efficiency is low, Wavelength stabilized difference in the range of total temperature
The problem of.
Utility model content
Based on this, the purpose of this utility model is that, there is provided a kind of high-power ASE light sources of flat type c-band, Ke Yiti
High-output power, improves temperature characterisitic, realizes the flat output in c-band.
The purpose of this utility model is achieved through the following technical solutions：A kind of high-power ASE light of flat type c-band
Source, including at least one multimode pump laser, bundling device, erbium ytterbium doubly clad optical fiber, gain smoothing filter and speculum；It is more
The pumping end of mould pump laser and bundling device connects；The signal end of bundling device connects with gain smoothing filter, speculum successively
Connect；The output terminal of bundling device is connected with the input terminal of erbium ytterbium doubly clad optical fiber；The output terminal output ASE of erbium ytterbium doubly clad optical fiber
Light.
The utility model is coupled to erbium as pumping source, the pump light of output using multimode pump laser by bundling device
The ASE light near 1060nm and 1550nm, the ASE are radiated in ytterbium doubly clad optical fiber, after erbium ytterbium doubly clad optical fiber absorptive pumping light
Light is divided into forward and backward, and the ASE light of forward direction is input to gain smoothing filter by bundling device, to the light near 1060nm into
Row filtering, filtered light are input to speculum, and gain smoothing filter is again inputted into after speculum reflects and is carried out again
Secondary filtering, the 1550nm light of acquisition are input in erbium ytterbium doubly clad optical fiber as flashlight by bundling device, amplified output.
Relative to the prior art, the utility model uses gain fibre of the erbium ytterbium doubly clad optical fiber as ASE light sources, uses
Multimode pump laser carries out pumping, and pump mode is cladding pumping, pumping efficiency higher, can improve the output work of ASE light sources
Rate；And need not be freezed using multimode pump laser, it is influenced by ambient temperature small, the temperature characterisitic of ASE light sources can be improved；This
Outside, by adding gain smoothing filter between speculum and bundling device, spectral flatness can be improved, and realize output ASE
The wave-length coverage of light is tunable.
Further, the ASE light sources further include optoisolator, input terminal and the erbium ytterbium doubly clad optical fiber of the optoisolator
Output terminal connection, the optoisolator output terminal output ASE light.
Further, the operation wavelength of the optoisolator is 1550nm, maximum carrying luminous power >=5W.
Further, the ASE light sources further include wavelength division multiplexer, the input terminal connection optoisolator of the wavelength division multiplexer
Output terminal, the wavelength division multiplexer output terminal output ASE light.
Further, another output terminal of the wavelength division multiplexer is connected with black matrix.
Further, the wavelength division multiplexer is 1060/1550 wavelength division multiplexer.
Further, the multimode pump laser is 940nm multimode pump lasers.
Further, the bundling device is the bundling device of (2+1) × 1, maximum carrying luminous power >=5W.
Further, the gain smoothing filter is tunable, its transmission bandwidth is 30nm.
Further, the speculum is faraday mirror.
In order to better understand and implement, describe the utility model in detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the structure diagram of the high-power ASE light sources of flat type c-band of embodiment.
Embodiment
Referring to Fig. 1, Fig. 1 is the structure diagram of the high-power ASE light sources of flat type c-band of the present embodiment.This implementation
The high-power ASE light sources of flat type c-band of example include 940nm multimodes pump laser 11, bundling device 12, erbium ytterbium double clad light
Fibre 13, gain smoothing filter 21, speculum 22, optoisolator 31, wavelength division multiplexer 32 and black matrix 33.
940nm multimodes pump laser 11 is connected with the pumping end of bundling device 12, and the output terminal and erbium ytterbium of bundling device 12 are double
One end connection of cladded-fiber 13.In the present embodiment, 940nm multimodes pump laser 11 has two, the preferably L4 of Lumentum
Pump laser, output power 10W；Bundling device 12 is the bundling device of (2+1) × 1.What 940nm multimodes pump laser 11 exported
Pump light enters in erbium ytterbium doubly clad optical fiber 13 after bundling device 12 closes beam, can be obtained after 13 absorptive pumping light of erbium ytterbium doubly clad optical fiber
Higher inverted population is obtained, the ASE light near 1060nm and 1550nm can be radiated after reversion particle relaxation vibration.
The signal end of bundling device 12 is connected with gain smoothing filter 21, speculum 22 successively.In the present embodiment, gain is put down
Smooth wave filter 21 has tunability, its transmission bandwidth is 30nm, can cover C and C+ wave bands；Speculum 22 is faraday mirror.Erbium
The ASE light that ytterbium doubly clad optical fiber 13 radiates is divided into forward and backward, and the ASE light of forward direction is input to flat gain by bundling device 12
Wave filter 21, the light near 1060nm can be filtered out by gain smoothing filter 21, improve the amplification efficiency of 1550nm light.Forward direction
ASE light is input to speculum 22 after gain smoothing filter 21, and being again inputted into gain after the reflection of speculum 22 puts down
Smooth wave filter 21 carries out secondary filtering, and more preferable suppression has been carried out to the ASE light outside band.So as to which the 1550nm light obtained is used as letter
Number light is input in erbium ytterbium doubly clad optical fiber 13 by bundling device 12, as injection seeded, after erbium ytterbium doubly clad optical fiber 13
Cause stimulated radiation, flashlight is amplified.
The input terminal of optoisolator 31 is connected with the output terminal of erbium ytterbium doubly clad optical fiber 13.In the present embodiment, optoisolator
31 operation wavelength is 1550nm, and maximum carrying luminous power is 5W.The flashlight amplified by erbium ytterbium doubly clad optical fiber 13 inputs
Into powerful optoisolator 31, the power grade inputted by powerful optoisolator 31 can reach 1W.
The output terminal of the input terminal connection optoisolator 31 of wavelength division multiplexer 32, the first output terminal of wavelength division multiplexer 32 are defeated
Go out ASE light, the second output terminal connection black matrix 33.In the present embodiment, wavelength division multiplexer 32 is 1060/1550 wavelength division multiplexer.Through
The ASE light for crossing the output of optoisolator 31 is input in wavelength division multiplexer 32, and wavelength division multiplexer 32 can be by the ASE light of 1060nm again
Filter out, and be input in black matrix 33 and absorbed, be coupled into after avoiding reflection in erbium ytterbium doubly clad optical fiber 13, cause output power
Unstable situation.Amplified 1550nm flashlights export after wavelength division multiplexer 32.
The operation principle of the present embodiment is as follows：
The pump light that 940nm multimodes pump laser 11 exports enters erbium ytterbium doubly clad optical fiber 13 after bundling device 12 closes beam
In, higher inverted population can be obtained after 13 absorptive pumping light of erbium ytterbium doubly clad optical fiber, can spoke after reversion particle relaxation vibration
Penetrate the ASE light near 1060nm and 1550nm.
The ASE light that erbium ytterbium doubly clad optical fiber 13 radiates is divided into forward and backward, and the ASE light of forward direction is inputted by bundling device 12
To gain smoothing filter 21, the light near 1060nm is filtered out, is then input to speculum 22, it is anti-by speculum 22
Gain smoothing filter 21 is again inputted into after penetrating and carries out secondary filtering, is closed so that the 1550nm light obtained passes through as flashlight
Beam device 12 is input in erbium ytterbium doubly clad optical fiber 13, as injection seeded, is caused after erbium ytterbium doubly clad optical fiber 13 and is excited spoke
Penetrate, flashlight is amplified.
The flashlight amplified by erbium ytterbium doubly clad optical fiber 13 is input in powerful optoisolator 31, by powerful
The power grade that optoisolator 31 inputs can reach 1W.The ASE light exported by optoisolator 31 is input to 1060/1550 wavelength-division
In multiplexer 32, wavelength division multiplexer 32 the ASE light of 1060nm can be filtered out again, from 1060nm ports be output in black matrix 33 into
Row absorbs, and amplified 1550nm flashlights are exported from 1550 ports of wavelength division multiplexer 32.
Further, the ASE light sources of the present embodiment can drive gain smoothing filter 21 by external circuit, change gain
Flat filter 21 by bandwidth, and then change the wave-length coverage of the ASE of final output, realize the ripple of output ASE optical signals
Long range tunable.
Relative to the prior art, the utility model uses gain fibre of the erbium ytterbium doubly clad optical fiber as ASE light sources, uses
Multimode pump laser carries out pumping, and pump mode is cladding pumping, pumping efficiency higher, can improve the output work of ASE light sources
Rate；And need not be freezed using multimode pump laser, it is influenced by ambient temperature small, the temperature characterisitic of ASE light sources can be improved；This
Outside, by adding tunable gain smoothing filter between speculum and bundling device, spectral flatness can be improved, and realize
The wave-length coverage for exporting ASE light is tunable.
Embodiment described above only expresses a kind of embodiment of the utility model, its description is more specific and detailed,
But therefore it can not be interpreted as the limitation to utility model patent scope.It should be pointed out that the common skill for this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
The scope of protection of the utility model.
Claims (10)
- A kind of 1. high-power ASE light sources of flat type c-band, it is characterised in that：Including at least one multimode pump laser, close Beam device, erbium ytterbium doubly clad optical fiber, gain smoothing filter and speculum；The pumping end of multimode pump laser and bundling device connects Connect；The signal end of bundling device is connected with gain smoothing filter, speculum successively；The output terminal of bundling device and erbium ytterbium double clad light Fine input terminal connection；The output terminal output ASE light of erbium ytterbium doubly clad optical fiber.
- 2. the high-power ASE light sources of flat type c-band according to claim 1, it is characterised in that：Further include optoisolator, The input terminal of the optoisolator is connected with the output terminal of erbium ytterbium doubly clad optical fiber, the output terminal output ASE of the optoisolator Light.
- 3. the high-power ASE light sources of flat type c-band according to claim 2, it is characterised in that：The optoisolator Operation wavelength is 1550nm, maximum carrying luminous power >=5W.
- 4. the high-power ASE light sources of flat type c-band according to claim 2, it is characterised in that：Further include wavelength-division multiplex Device, the output terminal of the input terminal connection optoisolator of the wavelength division multiplexer, the output terminal output ASE of the wavelength division multiplexer Light.
- 5. the high-power ASE light sources of flat type c-band according to claim 4, it is characterised in that：The wavelength division multiplexer Another output terminal be connected with black matrix.
- 6. the high-power ASE light sources of flat type c-band according to claim 4, it is characterised in that：The wavelength division multiplexer For 1060/1550 wavelength division multiplexer.
- 7. the high-power ASE light sources of flat type c-band according to claim 1, it is characterised in that：The multimode pumping swashs Light device is 940nm multimode pump lasers.
- 8. the high-power ASE light sources of flat type c-band according to claim 1, it is characterised in that：The bundling device is (2+ 1) × 1 bundling device, maximum carrying luminous power >=5W.
- 9. the high-power ASE light sources of flat type c-band according to claim 1, it is characterised in that：The flat gain filter Ripple device is tunable, its transmission bandwidth is 30nm.
- 10. the high-power ASE light sources of flat type c-band according to claim 1, it is characterised in that：The speculum is method Draw mirror.
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| CN201721200020.9U CN207265407U (en) | 2017-09-18 | 2017-09-18 | A kind of high-power ASE light sources of flat type c band |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482430A (en) * | 2017-09-18 | 2017-12-15 | 珠海光恒科技有限公司 | A kind of high-power ASE light sources of flat type c band |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107482430A (en) * | 2017-09-18 | 2017-12-15 | 珠海光恒科技有限公司 | A kind of high-power ASE light sources of flat type c band |
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