CN2800596Y - Distributed feedback single longitudinal mode optical fiber laser - Google Patents
Distributed feedback single longitudinal mode optical fiber laser Download PDFInfo
- Publication number
- CN2800596Y CN2800596Y CN 200520042764 CN200520042764U CN2800596Y CN 2800596 Y CN2800596 Y CN 2800596Y CN 200520042764 CN200520042764 CN 200520042764 CN 200520042764 U CN200520042764 U CN 200520042764U CN 2800596 Y CN2800596 Y CN 2800596Y
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- China
- Prior art keywords
- fiber laser
- laser
- dfb
- longitudinal mode
- temperature control
- Prior art date
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- 239000013307 optical fiber Substances 0.000 title claims description 20
- 239000000835 fiber Substances 0.000 claims abstract description 35
- 239000000919 ceramic Substances 0.000 claims abstract description 19
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000741 silica gel Substances 0.000 claims abstract description 8
- 229910002027 silica gel Inorganic materials 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 239000004411 aluminium Substances 0.000 claims description 8
- 229910052769 Ytterbium Inorganic materials 0.000 claims description 3
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 claims description 3
- 238000005086 pumping Methods 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 150000001398 aluminium Chemical class 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
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- Semiconductor Lasers (AREA)
Abstract
A distributed feedback single longitudinal mode fiber laser comprises a DFB fiber laser, and the distributed feedback single longitudinal mode fiber laser comprises the following components: the both ends of DFB fiber laser optic fibre fix on a metal sheet with ultraviolet silica gel, this metal sheet then is placed on semiconductor ceramic wafer, has one deck heat conduction silica gel between metal sheet and semiconductor ceramic wafer, this semiconductor ceramic wafer is arranged in again on a heating panel, the metal sheet link to each other through the control utmost point of a thermistor and temperature control power, the both ends of semiconductor ceramic wafer respectively through two wires with the two poles of the earth of temperature control power link to each other, above-mentioned each unit, except temperature control power, all encapsulated in a heat exchanger, DFB fiber laser optic fibre's one end stretch out in the heat exchanger outside to link to each other with a laser pump source through a wavelength division multiplexer, this wavelength division multiplexer's third end constitutes the utility model laser's output through a fiber isolator.
Description
Technical field
The utility model relates to fiber laser, and particularly a kind of stable operation is tunable
The distributed feed-back of phase shift-distributed feedback (DFB) single-longitudinal-mode fiber laser.This laser can be used as the master oscillator in the inertial confinement fusion laser driver front end system, can be used in Fibre Optical Sensor and the spectral analysis device.
Background technology
Inscribe grating mixing on Yb (ytterbium) optical fiber, then obtain to mix Yb optical fiber Distributed Feedback Laser.Produce in the Distributed Feedback Laser geometric center of evenly inscribing
Single-longitudinal-mode fiber laser is then produced in phase shift.The wavelength of this type of laser can be determined by following formula:
λ＝2nΛ
Wherein, λ is a Distributed Feedback Laser operation wavelength, and n is the optical fiber effective refractive index, and ∧ is the grating cycle.Therefore, when changing the value of grating cycle ∧, then can change the operation wavelength of Distributed Feedback Laser.By changing temperature and applying the value that different big or small pulling force can change grating cycle ∧.
The proposition of problem
Existing tuning methods has two kinds:
1, directly changes the tuning output of the temperature acquisition Distributed Feedback Laser of Distributed Feedback Laser.
2, change the laser operation wavelength of the humorous Distributed Feedback Laser of pulling force adjustable size that puts on Distributed Feedback Laser by mechanical means.
First method, even range of temperature is 100 degrees centigrade, wavelength tuning range is also less than 1nm.And 100 degrees centigrade temperature becomes scope, and is then very high to adjustment control degree centigrade system requirements in low-temperature space (less than-30) as the palpus long-term stable operation, and the operating cost height.And working temperature be higher than 50 degrees centigrade to the characteristics of Distributed Feedback Laser and around the performance of other device all can have a negative impact.
Second method is owing to be to adopt mechanical device to come the laser of tuning Distributed Feedback Laser to move wavelength by the pulling force size that change puts on Distributed Feedback Laser, therefore variation of ambient temperature both can cause the drift of wavelength working point, also was difficult for making system's long-term stable operation in a certain wavelength.
Summary of the invention
The technical problems to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, a kind of distribution-feedback single-longitudinal mode optical-fiber laser is provided, it is wide to obtain wavelength tuning range, overcomes the drift that variation of ambient temperature causes the wavelength working point again, makes operation wavelength more stable.
The technical solution of the utility model is as follows:
A kind of distribution-feedback single-longitudinal mode optical-fiber laser, comprise a DFB fiber laser, its formation is: the two ends of described DFB fiber laser optical fiber use the ultraviolet silica stationary on a metal sheet, this metallic plate then is positioned on the semiconductive ceramic sheet, between metallic plate and semiconductive ceramic sheet, one deck heat conductive silica gel is arranged, this semiconductive ceramic sheet places again on the heating panel, described metallic plate extremely links to each other by the control of a thermistor with temperature control power supply, the two ends of described semiconductive ceramic sheet link to each other by two leads the two poles of the earth with described temperature control power supply respectively, above-mentioned each unit, except that temperature control power supply, all be encapsulated in the heat shield, the output of described DFB fiber laser optical fiber stretches out in outside the described heat shield, one end of described DFB fiber laser optical fiber stretches out in outside the described heat shield, link to each other with a laser pumping source through a wavelength division multiplexer, the 3rd end of described wavelength division multiplexer constitutes the output of the utility model laser through a fibre optic isolater.
Described DFB fiber laser is for mixing ytterbium DFB fiber laser or er-doped DFB fiber laser.
Described metallic plate is an aluminium sheet.
The advantage of the utility model laser is:
(1) because the coefficient of thermal expansion (26 * 10 of aluminium block
-6/ k) much larger than the coefficient of thermal expansion (5.5 * 10 of silica fiber
-7/ therefore k), adopt above structure, compare with direct adjustings DFB method of temperature, make laser tunable wavelength scope increase (increasing to 3.4nm) greatly, and the temperature range of institute's palpus change is very little from 1nm.
(2) adopt electric temperature control control method than the method that directly adopts mechanical stretching, precision height, reliable and stable and good reproducibility.
(3) temperature control cooperates with heat shield, makes system reduced greatly by the influence of environment, and the single longitudinal mode operation wavelength stability of laser is good.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment 1
Among the figure:
The 1-heating panel, 2-semiconductive ceramic sheet, the 3-heat conductive silica gel, the 4-thermistor, 5-strip metal plate, 6-are mixed Yb DFB fiber laser, and 7, the 8-ultraviolet glue, 9-temperature control power supply, 10,11-conductor wire, 12-fibre optic isolater, 14-semiconductor laser.
Embodiment
See also Fig. 1, Fig. 1 is the structural representation of the utility model embodiment 1, as seen from the figure, the formation of the utility model distribution-feedback single-longitudinal mode optical-fiber laser is: one mixes the two ends ultraviolet silica gel 7 of Yb DFB fiber laser 6 optical fiber (long 10cm), 8 are fixed on the thin aluminum sheet 5,5 of this aluminium sheets are positioned on the semiconductive ceramic sheet 2, between aluminium sheet 5 and semiconductive ceramic sheet 2, one deck heat conductive silica gel 3 is arranged, this semiconductive ceramic sheet 2 places again on the heating panel 1, described aluminium sheet 5 extremely links to each other by the control of a thermistor 4 with temperature control power supply 9, the two ends of described semiconductive ceramic sheet 2 are respectively by two leads 10,11 link to each other with two electrodes of described temperature control power supply 9, above-mentioned each unit, except that temperature control power supply 9, all be encapsulated in the heat shield, one end of the described Yb of mixing DFB fiber laser 6 optical fiber stretches out in outside the described heat shield, link to each other with semiconductor laser 14 through a wavelength division multiplexer 13, the 3rd end of described wavelength division multiplexer 13 constitutes the output of the utility model laser through a fibre optic isolater 12.
By changing the driving power of semiconductive ceramic sheet---the electrical power of temperature control power supply 9, can change the temperature of semiconductive ceramic sheet 2 and aluminium sheet 5, when the length of aluminium sheet 5 varies with temperature, the cycle ∧ that mixes Yb optical fiber DFB structure that is fixed thereon also changes, thereby has reached the purpose of tuning laser operation wavelength.In addition, the 2-8 unit in the device is encapsulated in the heat shield, so the core component of the utility model device reduces by the influence of environment greatly, and the single longitudinal mode operation wavelength stability of laser is good.
Through probationary certificate: the utility model distribution-feedback single-longitudinal mode optical-fiber laser, can be from the tuning 1055.8nm that moves to of 1052.4nm.Wavelength tuning range is 3.4nm, and being scaled frequency range is 1020GHz.Using fixedly, the F-P scanning interferometer records the about 100MHz of tuning precision.And when the wavelength tuning of above laser to the arbitrary value of above-mentioned scope, re-use the fixedly stability of F-P scanning interferometer observation laser operation wavelength, use fixedly that the spectral resolution of F-P interferometer is about 30MHz, by range estimation, do not observe the drift phenomenon of single longitudinal mode laser interference ring, infer that thus the single longitudinal mode frequency stability drift fluctuation of the utility model laser is less than 30MHz.The peak power output of laser is 30mW, and the power output fluctuation is less than 5 ‰.
Claims (3)
1, a kind of distribution-feedback single-longitudinal mode optical-fiber laser, comprise a DFB fiber laser (6), the two ends ultraviolet silica gel (7 that it is characterized in that described DFB fiber laser (6) optical fiber, 8) be fixed on the metal sheet (5), this metallic plate (5) then is positioned on the semiconductive ceramic sheet (2), between metallic plate (5) and semiconductive ceramic sheet (2), be one deck heat conductive silica gel (3), this semiconductive ceramic sheet (2) places again on the heating panel (1), described metallic plate (5) extremely links to each other by the control of a thermistor (4) with temperature control power supply (9), the two ends of described semiconductive ceramic sheet (2) are respectively by two leads (10,11) two electrodes with described temperature control power supply (9) link to each other, above-mentioned each unit, except that temperature control power supply (9), all be encapsulated in the heat shield, the output of described DFB fiber laser (6) one optical fiber stretches out in outside the described heat shield, link to each other with a laser pumping source (14) through a wavelength division multiplexer (13), the 3rd end of described wavelength division multiplexer (13) constitutes the output of the utility model laser through a fibre optic isolater (12).
2, distribution-feedback single-longitudinal mode optical-fiber laser according to claim 1 is characterized in that described DFB fiber laser (6) is for mixing ytterbium DFB fiber laser or er-doped DFB fiber laser.
3, distribution-feedback single-longitudinal mode optical-fiber laser according to claim 1 is characterized in that described metallic plate (5) is an aluminium sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042764 CN2800596Y (en) | 2005-06-22 | 2005-06-22 | Distributed feedback single longitudinal mode optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520042764 CN2800596Y (en) | 2005-06-22 | 2005-06-22 | Distributed feedback single longitudinal mode optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2800596Y true CN2800596Y (en) | 2006-07-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520042764 Expired - Lifetime CN2800596Y (en) | 2005-06-22 | 2005-06-22 | Distributed feedback single longitudinal mode optical fiber laser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322641C (en) * | 2005-06-22 | 2007-06-20 | 中国科学院上海光学精密机械研究所 | Distributed feedback single longitudinal mode optical fiber laser |
| CN100527547C (en) * | 2008-04-02 | 2009-08-12 | 中国科学院上海光学精密机械研究所 | Tunable thulium-doped fiber laser |
| CN101950914A (en) * | 2010-09-06 | 2011-01-19 | 中国科学院上海光学精密机械研究所 | Wavelength Tunable Single Longitudinal Mode Distributed Feedback Fiber Laser |
| CN103825167A (en) * | 2014-02-12 | 2014-05-28 | 华南理工大学 | Continuously-tunable single-frequency optical fiber laser |
-
2005
- 2005-06-22 CN CN 200520042764 patent/CN2800596Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1322641C (en) * | 2005-06-22 | 2007-06-20 | 中国科学院上海光学精密机械研究所 | Distributed feedback single longitudinal mode optical fiber laser |
| CN100527547C (en) * | 2008-04-02 | 2009-08-12 | 中国科学院上海光学精密机械研究所 | Tunable thulium-doped fiber laser |
| CN101950914A (en) * | 2010-09-06 | 2011-01-19 | 中国科学院上海光学精密机械研究所 | Wavelength Tunable Single Longitudinal Mode Distributed Feedback Fiber Laser |
| CN103825167A (en) * | 2014-02-12 | 2014-05-28 | 华南理工大学 | Continuously-tunable single-frequency optical fiber laser |
| CN103825167B (en) * | 2014-02-12 | 2015-04-22 | 华南理工大学 | Continuously-tunable single-frequency optical fiber laser |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050622 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20050622 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |