CN201937158U - Adjustable ASE (amplified spontaneous emission) light source - Google Patents
Adjustable ASE (amplified spontaneous emission) light source Download PDFInfo
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- CN201937158U CN201937158U CN201020551695XU CN201020551695U CN201937158U CN 201937158 U CN201937158 U CN 201937158U CN 201020551695X U CN201020551695X U CN 201020551695XU CN 201020551695 U CN201020551695 U CN 201020551695U CN 201937158 U CN201937158 U CN 201937158U
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Abstract
The utility model relates to an adjustable ASE (amplified spontaneous emission) light source which belongs to the field of an ASE light source. The adjustable ASE light source comprises a 1,480 nm pump laser (01), a 1,480 nm optical splitter (02), a 1,480 nm WDM (wavelength division multiplex), Er-doped fibers, an isolator, a gain flattening filter, a high-isolation isolator (11), a 1,550 nm optical splitter (12) and a PIN tube (13). For the adjustable ASE light source, by the design of the optical path structure, high-power output and high stability are realized, and the cost of production is reduced.
Description
Technical field
The utility model relates to a kind of adjustable amplified spontaneous emission light source, belongs to the amplified spontaneous emission light source field.
Background technology
Er-doped (er) optical fiber can have very strong amplified spont-aneous emission (Amplified Spontaneous Emission) in the scope of 1520nm-1615nm under the excitation of pump light (the normally pump light of 980nm and 1480nm).
The Er-doped fiber amplified spont-aneous emission is a kind of high stability, the light source of high power output, has very low degree of polarization (Degree Of Polarization) simultaneously, be widely used in the production and the test of optical device, at fiber grating, DWDM (the abbreviation of Dense Wavelength Division Multiplexing, Chinese is dense wave division multipurpose) film filter, CWDM (the abbreviation of Coarse wavelength division multiplexing, Chinese is coarse wavelength division multiplexer) film filter, AWG (the abbreviation of Array Waveguide Grating, Chinese is array waveguiding grating) etc. in the test of device, compare with the single ripple scanning of employing tunable laser, adopt the wideband A SE (abbreviation of amplified spontaneous emission, Chinese is the amplified spontaneous emission light source) light source, simple to operate, the measuring accuracy height, can obviously improve effect.In addition, the ASE light source also is widely used in the measurement of other optical device spectral characteristic, as coupler, isolator, circulator etc.Especially, along with the further raising of cost control requirement of optical communication system, the adjustable ASE light source of high-power output, low cost, high stability will obtain to use more widely.
The factors such as power of the doping content of ASE spectrum and erbium ion, length, pump mode and the pump light of Er-doped fiber are relevant.Produce C-band ASE and adopt the backward pump mode usually.
The utility model content
To achieve these goals, though the utility model is made of pump laser, isolator, optical splitter, Er-doped fiber etc. equally, but by revising the peripheral drive circuit of pump laser, redesign to high radiating module structure, revised the use model of pump laser, thereby the design that light channel structure carries out has again been revised, a kind of adjustable amplified spontaneous emission light source is provided, reach high power output, high stability and the purpose that reduces cost.
The utility model is adopted following technical scheme by its technical problem of solution:
A kind of adjustable amplified spontaneous emission light source, after it is characterized in that pump laser passes through the 1480nm optical splitter, be divided into two-way: lead up to a 1480nm WDM (wavelength division multiplexing, Chinese is the wavelength division multiplex device of 1480nm) coupling, another coupling by the 2nd 1480nm WDM; Wherein, by a road of 1480nm WDM coupling, behind first Er-doped fiber, by the spontaneous radiation effect, with the amplified spont-aneous emission light positive to pass through first isolator after, carry out flat gain control by two gain flattening filter again, through second Er-doped fiber; Another is by the coupling of the 2nd 1480nm WDM, behind second Er-doped fiber, by the spontaneous radiation effect, amplified spont-aneous emission light after entering into high-isolation isolator and 1550nm optical splitter through the 2nd 1480nm WDM, is exported the light on last road.And the reverse amplified spontaneous emission light that last road produces enters that the decay by second isolator and 20dB attenuation points is reduced as much as possible behind first Er-doped fiber, thus control since oppositely the spectrum that causes of the reflection of output shake; After the reverse amplified spontaneous emission light source that another road produces enters second Er-doped fiber, order is by two gain flattening filter, first isolator, a 1480nm WDM, first Er-doped fiber and second isolators, reverse ASE is reduced as much as possible, also just can not influence the stability of power output; The high-isolation isolator is isolated the reverberation of output, thereby effectively suppressed of the influence of output reverberation for pump laser, controlled because pump laser is subjected to the spectrum shake that catoptrical interference causes, by the 1550nm optical splitter, output light is carried out beam split, thereby, pump laser is controlled automatically, thereby the controllability of realization power output by the responsiveness feedback of PIN pipe.
What described pump laser used is the 1480nm pump laser.
The drive circuit of described pump laser adopts the multistage capacitive feedback mode of high power capacity.
Described high radiating module is to adopt new aluminum alloy materials, and by increasing the heat sink strip that the below increases, improves the heat-sinking capability of module.
The beneficial effects of the utility model are as follows:
1, the high radiating module of the utility model design, by use to the extensive thermal trough of module bottom, increase the contact area of module bottom and air, and flowing water design by thermal trough, increase the speed of circulation of air, thereby take away a large amount of heats, reach the purpose of high-speed heat radiation.
2, light path of the present utility model, circuit and modular structure are after redesign, and with lower cost, maximum can realize 〉=23dBm that the ambient stable degree was exported less than the power of 0.02dB in 8 hours.3, the utility model has been realized high power output, high stability, and has been reduced production cost by the design to light channel structure.
Description of drawings
Fig. 1 is a light channel structure schematic diagram of the present utility model.
Fig. 2 is the light channel structure schematic diagram of present typical A SE light source.
Wherein: 01 expression 1480nm pump laser; 02 expression 1480nm optical splitter; 03,04 expression 1480nm WDM; 05,06 expression Er-doped fiber; 07,08 expression isolator; 09,10 expression gain flattening filter; 11 expression high-isolation isolators; 12 expression 1550nm optical splitters; 13 expression PIN pipes.
Fig. 3 is the cross-sectional structure schematic diagram of high radiating module.
Embodiment
Below in conjunction with accompanying drawing the utility model is described in further details.
As shown in Figure 1, a kind of adjustable amplified spontaneous emission light source is characterized in that pump laser 01 by behind the 1480nm optical splitter 02, is divided into two-way: lead up to the coupling of a 1480nm WDM 03, another is by the coupling of the 2nd 1480nm WDM 04; Wherein, by a road of a 1480nm WDM 03 coupling, behind first Er-doped fiber 05, by the spontaneous radiation effect, with the amplified spont-aneous emission light positive to pass through first isolator 08 after, carry out flat gain control by two gain flattening filter 09,10 again, through second Er-doped fiber 06; Another is by the coupling of the 2nd 1480nm WDM 04, behind second Er-doped fiber 06, by the spontaneous radiation effect, amplified spont-aneous emission light is entered into high-isolation isolator 11 and the 12 back outputs of 1550nm optical splitter with the light on last road through the 2nd 1480nm WDM 04.And the reverse amplified spontaneous emission light that last road produces is reduced as much as possible by the decay of second isolator 07 with the 20dB attenuation points after entering first Er-doped fiber 05, thus the spectrum shake that control causes owing to the reflection of oppositely exporting; After the reverse amplified spontaneous emission light source that another road produces enters second Er-doped fiber 06, order is by two gain flattening filter 09,10, first isolator 08, a 1480nm WDM 03, first Er-doped fiber 05 and second isolators 07, reverse ASE is reduced as much as possible, also just can not influence the stability of power output; The reverberation of 11 pairs of outputs of high-isolation isolator is isolated, thereby effectively suppressed of the influence of output reverberation for pump laser 01, controlled because pump laser 01 is subjected to the spectrum shake that catoptrical interference causes, by 1550nm optical splitter 12, output light is carried out beam split, thereby, pump laser is controlled automatically, thereby the controllability of realization power output by the responsiveness feedback of PIN pipe 13.
What described pump laser used is the 1480nm pump laser.
The drive circuit of described pump laser adopts the multistage capacitive feedback mode of high power capacity.
Initial ASE light source adopts the 980nm pumping, and the refrigeration electric current of pumping is little, and circuit only need provide the current value less than 500mA just can make pumping be operated under 25 ℃ the temperature of regulation in-5 ℃～55 ℃ ambient temperature ranges.And new ASE light source adopts the 1480nm pumping, and the refrigeration electric current of pumping is big, and circuit need provide the current value of 1300mA just can make pumping be operated under 25 ℃ the temperature of regulation in-5 ℃～55 ℃ ambient temperature ranges.And, because the special circumstances in pumping temperature when control, the variation of current value be one by shaking slowly stable process.Therefore, in case the refrigeration electric current is excessive, the process of this concussion will exceed the scope of control, thereby becomes uncontrollable current oscillation, makes that pumping work is not normal, causes the damage of pumping.So, need adopt higher requirement at the concussion loop of refrigeration Current Control, thereby make that the process of this concussion is controlled.The way that adopts is: by designing new more concussion control circuit, use more jumbo paster tantalum electric capacity, thereby make the concussion electric current be no more than the bound scope, thereby reach final stable purpose.
Be illustrated in figure 2 as the light channel structure schematic diagram of typical A SE light source, 980nm pump laser 01 is by the coupling of 980nm WDM, through behind the Er-doped fiber, by the spontaneous radiation effect, with the amplified spont-aneous emission light positive to ejaculation, and reverse amplified spontaneous emission light, by 980nm WDM, gain flattening filter, the loop of 50: 50 optical splitters, pass through gain flattening filter again, 980nm WDM, through behind the Er-doped fiber, by the spontaneous radiation effect, with the amplified spont-aneous emission light positive to ejaculation, with the forward amplified spontaneous emission light that produces previously, by isolator 1, isolator 2, export behind 1: 99 optical splitter.The reverberation of isolator 1,2 pairs of outputs of isolator is isolated, thereby effectively suppressed of the influence of output reverberation for pump laser, controlled because pump laser is subjected to the spectrum shake that catoptrical interference causes, by 1: 99 optical splitter, output light is carried out beam split, thereby, pump laser is controlled automatically, thereby the controllability of realization power output by the responsiveness feedback of PIN pipe.
As shown in Figure 3, high radiating module improves the heat-sinking capability of module, and adopts new aluminum alloy materials by increasing the heat sink strip that the below increases, and makes radiating effect be significantly improved.
Claims (3)
1. adjustable amplified spontaneous emission light source is characterized in that pump laser (01) by behind the 1480nm optical splitter (02), is divided into two-way: lead up to the coupling of a 1480nm WDM (03), another is by the coupling of the 2nd 1480nm WDM (04); Wherein, by a road of a 1480nm WDM (03) coupling, behind first Er-doped fiber (05), by the spontaneous radiation effect, with the amplified spont-aneous emission light positive to pass through first isolator (08) after, carry out flat gain control by two gain flattening filter (09,10) again, through second Er-doped fiber (06); Another is by the coupling of the 2nd 1480nm WDM (04), behind second Er-doped fiber (06), by the spontaneous radiation effect, amplified spont-aneous emission light is entered into high-isolation isolator (11) and the output of 1550nm optical splitter (12) back with the light on last road through the 2nd 1480nm WDM (04), and the reverse amplified spontaneous emission light that last road produces is reduced as much as possible by the decay of second isolator (07) with the 20dB attenuation points after entering first Er-doped fiber (05), thus the spectrum shake that control causes owing to the reflection of oppositely exporting; After the reverse amplified spontaneous emission light source that another road produces enters second Er-doped fiber (06), order is by two gain flattening filter (09,10), first isolator (08), a 1480nm WDM (03), first Er-doped fiber (05) and second isolator (07), reverse ASE is reduced as much as possible, also just can not influence the stability of power output; High-isolation isolator (11) is isolated the reverberation of output, thereby effectively suppressed of the influence of output reverberation for pump laser (01), controlled because pump laser (01) is subjected to the spectrum shake that catoptrical interference causes, by 1550nm optical splitter (12), output light is carried out beam split, thereby, pump laser is controlled automatically, thereby the controllability of realization power output by the responsiveness feedback of PIN pipe (13).
2. a kind of adjustable amplified spontaneous emission light source according to claim 1, what it is characterized in that described pump laser use is the 1480nm pump laser.
3. a kind of adjustable amplified spontaneous emission light source according to claim 1, the drive circuit that it is characterized in that described pump laser adopts the multistage capacitive feedback mode of high power capacity.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201020551695XU CN201937158U (en) | 2010-09-27 | 2010-09-27 | Adjustable ASE (amplified spontaneous emission) light source |
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| CN201020551695XU CN201937158U (en) | 2010-09-27 | 2010-09-27 | Adjustable ASE (amplified spontaneous emission) light source |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036055A (en) * | 2018-09-17 | 2018-12-18 | 长春理工大学 | A kind of multi-stage fiber amplification test device and method |
| CN111998844A (en) * | 2020-08-13 | 2020-11-27 | 北京航空航天大学 | ASE light source for spherical inertial navigation system |
| CN114285493A (en) * | 2021-12-23 | 2022-04-05 | 国网江西省电力有限公司信息通信分公司 | Optical fiber information common transmission optimization system |
| CN114531202A (en) * | 2022-02-23 | 2022-05-24 | 国网江西省电力有限公司信息通信分公司 | Optical fiber information common transmission optimization system |
-
2010
- 2010-09-27 CN CN201020551695XU patent/CN201937158U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036055A (en) * | 2018-09-17 | 2018-12-18 | 长春理工大学 | A kind of multi-stage fiber amplification test device and method |
| CN111998844A (en) * | 2020-08-13 | 2020-11-27 | 北京航空航天大学 | ASE light source for spherical inertial navigation system |
| CN114285493A (en) * | 2021-12-23 | 2022-04-05 | 国网江西省电力有限公司信息通信分公司 | Optical fiber information common transmission optimization system |
| CN114285493B (en) * | 2021-12-23 | 2023-08-11 | 国网江西省电力有限公司信息通信分公司 | Optical fiber energy and information co-transmission optimizing system |
| CN114531202A (en) * | 2022-02-23 | 2022-05-24 | 国网江西省电力有限公司信息通信分公司 | Optical fiber information common transmission optimization system |
| CN114531202B (en) * | 2022-02-23 | 2023-08-18 | 国网江西省电力有限公司信息通信分公司 | Optical fiber energy and information co-transmission optimizing system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: 214028 Wuxi New District Science and Technology Industrial Park, Jiangsu, No. 93 -C block Patentee after: WUXI TACLINK OPTOELECTRONICS TECHNOLOGY CO., LTD. Address before: 214028 science and Technology Industrial Park, Wuxi New District, Jiangsu, 93-C Patentee before: Wuxi Zhongxing Optoelectronics Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110817 |