CN2901348Y - High power erbium doped optical fiber light source based on reciprocating double range double pump - Google Patents
High power erbium doped optical fiber light source based on reciprocating double range double pump Download PDFInfo
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- CN2901348Y CN2901348Y CNU2006200423187U CN200620042318U CN2901348Y CN 2901348 Y CN2901348 Y CN 2901348Y CN U2006200423187 U CNU2006200423187 U CN U2006200423187U CN 200620042318 U CN200620042318 U CN 200620042318U CN 2901348 Y CN2901348 Y CN 2901348Y
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Abstract
The utility model relates to a high power erbium-doped fiber light source based on the reciprocation double-way and double-pump in the optical technology, comprising two 980/1550 wavelength-division multiplexers, two 980nm pump lasers, an erbium-doped fiber, a fiber reflector and a polarization control apparatus, the 1550 port of one 980/1550 wavelength-division multiplexer is the output end, simultaneously the 980 port of it is connected with a 980nm pump laser, wherein a wave coupler terminal is connected to one end of the erbium-doped fiber, the other end of it is connected with the wave coupler terminal of another 980/1550 wavelength-division multiplexer, the 1550 port is connected with the input end of the fiber reflector, the polarization control apparatus is cascade connected in the rear circuit of the fiber reflector. The output the utility model optical power of the utility model is above 17dBm when the reciprocation double-way and double-pump technology is used, the pump conversion efficiency can reach 37%.
Description
Technical field
The utility model relates to a kind of light source of optical technical field, be specifically related to a kind of high-power erbium-doped fiber optic source based on the round-trip double pump.
Technical background
Erbium-doped fiber optic source also claims the ASE light source.The part of light source body is gain media Er-doped fiber and high performance pump laser, by the amplification of being excited of spontaneous radiation in the gain media, and then the spectrum of output spectrum broad, be the wideband light source of a kind of high stable, high power output.
The ASE light source is widely used in the production and the test of fiber optic passive device, is the desirable infrared wide spectrum light source of applications such as Fibre Optical Sensor, optical passive component test, spectral analysis.In the test of devices such as fiber grating, DWDM film filter, CWDM film filter, AWG, adopt the ASE light source to compare, can improve effect to reach more than 10 times with adopting the scanning of white light source or tunable laser, and simple to operate, measuring accuracy is high.In addition, the ASE light source also be widely used in other optical fibre device as: the spectral characteristic of coupling mechanism, isolator, circulator etc. is measured.
But the structure that general now commercial ASE light source adopts is one way output, has determined that like this its conversion efficiency for pump light is lower, and promptly the waste for intake is bigger.Therefore the pumping laser power that generally needs can be very big, makes its manufacturing cost relatively more expensive, and the miniaturization for instrument simultaneously causes bigger difficulty.
Find through literature search prior art, " a kind of high power Er-doped fiber fluorescence light source " that Guo Xiaodong etc. deliver on 1298 pages of " photon journal " 2004 the 33rd volume o. 11ths, propose in this article to make the pumping pumping source with a 980nm laser diode, adopt the one way structure, on an Er-doped fiber, can obtain the Er-doped fiber wideband light source of output power greater than 36mw by simple connection combination.Its deficiency is: the output power of light source is lower, simultaneously the one way structures shape conversion efficiency of pump light not high.
Summary of the invention
The utility model is at the deficiencies in the prior art, a kind of high-power erbium-doped fiber optic source based on the round-trip double pump is provided, make it adopt the pump light round-trip to realize the utilization of and pumping fine to erbium, improve the utilization ratio of pumping and the utilization factor of erbium fibre greatly, also increased the output power of light source simultaneously.
The utility model is achieved through the following technical solutions, and the utility model comprises: two 980/1550 wavelength division multiplexers, two 980nm pump light laser instruments, Er-doped fiber, a Polarization Controller and fiber reflectors.All building blocks are spare part in common use in the light communication system.
The annexation of above-mentioned each parts is: 1550 ports of 980/1550 wavelength division multiplexer are the output terminal of total system, and 980 ports of this wavelength division multiplexer connect a 980nm pump light laser instrument simultaneously, and it closes an end of ripple termination Er-doped fiber; Another 980/1550 wavelength division multiplexer of another termination of Er-doped fiber close the ripple port, 980 ports of this wavelength division multiplexer connect another 980nm pump light laser instrument, 1550 ports connect the input end of fiber reflector, the Polarization Controller of connecting in the back end loop of fiber reflector.There are two ports the fiber reflector rear end, is connected on the input and output port of Polarization Controller respectively.The above all connection medium is optical fiber.
In the utility model when work,, the pump light that two 980nm pump light laser instruments send is sent in the Er-doped fiber through 980/1550 wavelength division multiplexer that links to each other with them respectively, makes the erbium ion induced transition to high level, thus the generation spontaneous radiation.A spontaneous emission light part is transmitted to system's output terminal, and is amplified by pump light; Another part transmits to fiber reflector, and the 1550 ports output from 980/1550 wavelength division multiplexer that links to each other with fiber reflector causes fiber reflector then, is turned back to Er-doped fiber again by the fiber reflection mirror reflection and obtains amplifying for the second time.All spontaneous emission lights that are exaggerated (ASE) are all exported from the output terminal of system at last.Polarization Controller can be controlled the relative phasic difference of fiber reflector back segment two-way light therein, reaches the purpose of the reflectivity of control fiber reflector.
The utility model adopts special round-trip structure to improve the output power and the conversion efficiency of ASE light source, spontaneous emission light twice process Er-doped fiber back and forth is exaggerated, this structure is equivalent to increase pump light intensities and fiber lengths simultaneously using, and the Output optical power of system and conversion efficiency are improved greatly.Output optical power of the present utility model can reach 17dBm, and its conversion efficiency can reach 35%.
Description of drawings
Fig. 1 is the utility model structural representation
Fig. 2 is the test system structure synoptic diagram of the utility model embodiment
Fig. 3 the utility model embodiment test result figure
Embodiment
As shown in Figure 1, the utility model comprises: 980nm pump light laser instrument 1,7,980/1550 wavelength division multiplexers 2,8, Er-doped fiber 3, a fiber reflector 4 and a Polarization Controller 5.Annexation is: 1550 ports of 980/1550 wavelength division multiplexer 2 are output port, and at 980nm pump light laser instrument 1 of 980 ports connection of wavelength division multiplexer 2, it closes an end of ripple termination Er-doped fiber 3; Another termination 980/1550 wavelength division multiplexer 8 of Er-doped fiber 3 close the ripple port, 980 ports of wavelength division multiplexer 8 connect 980nm pump light laser instrument 7,1550 ports connect the input end of fiber reflector 4, series connection Polarization Controller 5 in the back end loop of fiber reflector 4.There are two ports fiber reflector 4 rear ends, are connected on the input and output port of Polarization Controller 5 respectively.The above all connection medium is optical fiber.
Pumping all is the 980nm pump laser of 150mW for peak power output wherein.
Erbium-doped erbium optical fiber 3 is commercial low-doped type erbium fibre.
During work, the pump light that two 980nm pump light laser instruments 1,7 send is sent in the Er-doped fiber 3 through 980/1550 wavelength division multiplexer 2,8 that links to each other with them respectively, makes the erbium ion induced transition to high level, thus the generation spontaneous radiation.A spontaneous emission light part is transmitted to system's output terminal, and is amplified by pump light; Another part is to fiber reflector 4 transmission, and the 1550 ports output from 980/1550 wavelength division multiplexer 8 that links to each other with fiber reflector 4 causes fiber reflector 4 then, is turned back to Er-doped fiber 3 again by fiber reflector 4 reflections and obtains amplification for the second time.All spontaneous emission light ASE that are exaggerated all export from the output terminal 6 of system at last.Polarization Controller 5 can be controlled the relative phasic difference of fiber reflector 4 back segment two-way light therein, reaches the purpose of the reflectivity of control fiber reflector 4.
Adopt this ASE light source of optical test path shown in Figure 2.Optoisolator 9, spectroanalysis instrument 10 among the figure.The Er-doped fiber length that inserts is taken as 8m, 10m, 12m, 20m, 30m series, and adopting two peak power outputs is 980nm pump laser about 150mW, tests under the different pump powers ASE power that light source is exported.
According to above-mentioned condition, the gained test result is shown in Figure 3.Test result shows that if choose suitable Er-doped fiber length, the output power of the utility model amplifier can reach 17.65dBm, the influence of coupling part loss when deducting some tests, and in fact pump conversion efficiency can reach 37%.
Claims (3)
1, a kind of high-power erbium-doped fiber optic source based on the round-trip double pump, comprise: 980nm pump light laser instrument (1,7), 980/1550 wavelength division multiplexer (2,8), Er-doped fiber (3), a fiber reflector (4) and a Polarization Controller (5), it is characterized in that: 1550 ports of 980/1550 wavelength division multiplexer (2) are output port, 980 ports at wavelength division multiplexer (2) connect a 980nm pump light laser instrument (1), and it closes an end of ripple termination Er-doped fiber (3); Another termination 980/1550 wavelength division multiplexer (8) of Er-doped fiber (3) close the ripple port, 980 ports of wavelength division multiplexer (8) connect 980nm pump light laser instrument (7), 1550 ports connect the input end of fiber reflector (4), the Polarization Controller (5) of in the back end loop of fiber reflector (4), connecting, there are two ports fiber reflector (4) rear end, is connected on the input and output port of Polarization Controller (5) respectively.
2, the high-power erbium-doped fiber optic source based on the round-trip double pump according to claim 1 is characterized in that: the above all connection medium is optical fiber.
3, the high-power erbium-doped fiber optic source based on the round-trip double pump according to claim 1 is characterized in that: pumping all is the 980nm pump laser of 150mW for peak power output wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200423187U CN2901348Y (en) | 2006-06-01 | 2006-06-01 | High power erbium doped optical fiber light source based on reciprocating double range double pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200423187U CN2901348Y (en) | 2006-06-01 | 2006-06-01 | High power erbium doped optical fiber light source based on reciprocating double range double pump |
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| Publication Number | Publication Date |
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| CN2901348Y true CN2901348Y (en) | 2007-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200423187U Expired - Fee Related CN2901348Y (en) | 2006-06-01 | 2006-06-01 | High power erbium doped optical fiber light source based on reciprocating double range double pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801091A (en) * | 2012-09-06 | 2012-11-28 | 北京化工大学 | Random fiber laser |
-
2006
- 2006-06-01 CN CNU2006200423187U patent/CN2901348Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102801091A (en) * | 2012-09-06 | 2012-11-28 | 北京化工大学 | Random fiber laser |
| CN102801091B (en) * | 2012-09-06 | 2014-06-18 | 北京化工大学 | Random fiber laser |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |