CN102931577A - All-fiber laser with adjustable wavelength employing biconical fiber melting taper as tuning element - Google Patents
All-fiber laser with adjustable wavelength employing biconical fiber melting taper as tuning element Download PDFInfo
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- CN102931577A CN102931577A CN201210456216XA CN201210456216A CN102931577A CN 102931577 A CN102931577 A CN 102931577A CN 201210456216X A CN201210456216X A CN 201210456216XA CN 201210456216 A CN201210456216 A CN 201210456216A CN 102931577 A CN102931577 A CN 102931577A
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Abstract
The invention discloses an all-fiber laser with an adjustable wavelength employing a biconical fiber melting taper as a tuning element. The all-fiber laser is characterized in that the output end of a pumped semiconductor laser is connected with a pumping input end of a fiber beam combiner; the output end of the fiber beam combiner is connected with a doped fiber used as a gain medium; the other end of the doped fiber is connected with the input end of a fiber isolator; the output end of the fiber isolator and the biconical fiber melting taper used as a wavelength tuning element are welded together; the other end of the fiber melting taper is welded with the input end of a fiber coupler; the output end of t coupler is welded with the input end of the fiber beam combiner, and a laser light is output through an output fiber. The all-fiber laser has the advantages that the biconical fiber melting taper is used as the wavelength tuning element to achieve the all-fiber laser with the adjustable wavelength. The biconical fiber melting taper is simple to fabricate and low in cost, and the wavelength modulating characteristics of the biconical fiber melting taper are periodic, so that the all-fiber laser can work at any wavelength.
Description
Technical field
The present invention relates to a kind of fiber laser, especially a kind of biconical fiber pyrometric cone that uses belongs to optical fiber and laser technology field as the adjustable full-optical-fiber laser of the wavelength of tuned cell.
Background technology
Fiber laser is the laser take the optical fiber of doped with rare-earth elements as gain media, by the different rare earth element that mixes, such as bait (Er), an an ancient unit of weight equal to 20 or 24 *taels of silver (Yb), thulium (Tm), holmium (Ho), neodymium (Nd) etc., the service band of fiber laser covered from ultraviolet to infrared.Compare with other lasers, it is low that fiber laser has the laser work threshold value, energy transformation ratio is high, output beam quality is good, compact conformation is stablized, need not the light path adjustment, perfect heat-dissipating, the life-span is long and the distinguishing feature such as Maintenance free, therefore is rapidly developed and uses widely.At present, the power output of the fiber laser of continuous wave output is Da Wanwa, has been widely applied to the fields such as material processed processing, welding, mark.
Some scientific research or industrial application need the laser of a plurality of optical maser wavelengths, and such as the spectral characteristic of certain material of test, perhaps certain optics performance is to dependence of different optical maser wavelengths etc.The adjustable laser of wavelength just has a lot of potential application like this.At present, have some mechanism to come the wavelength of tunable fiber laser, such as fiber grating is stretched, exert pressure or regulate temperature, thereby the spectral characteristic of regulating fiber grating realizes tuning to the fiber laser wavelength.But fiber grating has specific wave-length coverage, and cost is also high.Than fiber grating, the biconical fiber pyrometric cone that the present invention mentions is made simple, cost is low, thereby and its wavelength-modulated characteristic be periodically to be operated in any wavelength (as long as the light of this wavelength loss in the optical fiber of making the biconical fiber pyrometric cone is little).
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, propose a kind of biconical fiber pyrometric cone that uses as the adjustable full-optical-fiber laser of the wavelength of tuned cell.
The present invention is realized by the following technical programs.
A kind of biconical fiber pyrometric cone that uses is as the adjustable full-optical-fiber laser of the wavelength of tuned cell, the output that it is characterized in that pumping semiconductor laser (101) links to each other with the pumping input of optical-fiber bundling device (102), the optical-fiber bundling device output links to each other with the doped fiber (103) that is used as gain media, the doped fiber other end links to each other with a fibre optic isolater (104) input, the fibre optic isolater output is welded to one with the Modulation Based on Optical Fiber Fused Taper (105) that is used as the wavelength tuning element, the Modulation Based on Optical Fiber Fused Taper other end is welded to fiber coupler (106) input, output of coupler is welded to the input of optical-fiber bundling device, and laser is exported through output optical fibre (107).
The present invention is provided with optical switch or saturated absorbing body (201), optical switch or saturated absorbing body (201) one ends link to each other with the fibre optic isolater output, optical switch or the saturated absorbing body other end are welded to one with the biconical fiber pyrometric cone (105) that is used as the wavelength tuning element, the Modulation Based on Optical Fiber Fused Taper other end is welded to fiber coupler (106) input, output of coupler is welded to the input of optical-fiber bundling device, and pulse laser is exported through output optical fibre (107).
The present invention uses the biconical fiber pyrometric cone as the wavelength adjustable element, the biconical fiber pyrometric cone is made simple, particularly, the coat of short section of optical fiber is removed, with thermal source (carbon dioxide laser, electrode, acetylene burner etc.) optical fiber is heated, utilize simultaneously the optical displacement platform that optical fiber is stretched, it is little that the Modulation Based on Optical Fiber Fused Taper that the method is made is introduced loss, just can realize its wavelength regulation characteristic by easy mechanical stretching, than fiber grating, the biconical fiber pyrometric cone is periodic to the modulation of wavelength, can be operated in theory any wavelength (as long as the light of this wavelength in optical fiber can low-loss transmission).In sum, the biconical fiber pyrometric cone is a kind of full fiber optic wavelength adjustable element of lower-cost excellent performance.
Doped fiber of the present invention can be the optical fiber of any rare earth element of doping, such as, can be Yb dosed optical fiber, Er-doped fiber, thulium doped fiber is mixed holmium optical fiber etc.
Advantage of the present invention is to use the biconical fiber pyrometric cone to realize the adjustable wavelength laser of full fiberize as the wavelength tuning element.The biconical fiber pyrometric cone is made simple, and cost is lower, thereby and the wavelength-modulated characteristic of biconical fiber pyrometric cone be periodically to be operated in any wavelength (as long as the light of this wavelength loss in the optical fiber of making the biconical fiber pyrometric cone is little).
Description of drawings
Fig. 1 is the wavelength-modulated characteristic schematic diagram of biconical fiber pyrometric cone of the present invention.
Fig. 2 is a kind of structural representation of the present invention.
Fig. 3 is another kind of structural representation of the present invention.
Embodiment
The invention will be further described below in conjunction with attached.
As described in Figure, a kind of biconical fiber pyrometric cone that uses is as the adjustable full-optical-fiber laser of the wavelength of tuned cell, the output of pumping semiconductor laser (101) links to each other with the pumping input of optical-fiber bundling device (102), the optical-fiber bundling device output links to each other with the doped fiber (103) that is used as gain media, the doped fiber other end links to each other with a fibre optic isolater (104) input, the fibre optic isolater output is welded to one with the biconical fiber pyrometric cone (105) that is used as the wavelength tuning element, the Modulation Based on Optical Fiber Fused Taper other end is welded to fiber coupler (106) input, output of coupler is welded to the input of optical-fiber bundling device, and laser is exported through output optical fibre (107).
The present invention is provided with optical switch or saturated absorbing body (201), optical switch or saturated absorbing body (201) one ends link to each other with the fibre optic isolater output, optical switch or the saturated absorbing body other end are welded to one with the biconical fiber pyrometric cone (105) that is used as the wavelength tuning element, the Modulation Based on Optical Fiber Fused Taper other end is welded to fiber coupler (106) input, output of coupler is welded to the input of optical-fiber bundling device, and pulse laser is exported through output optical fibre (107).
The present invention uses the biconical fiber pyrometric cone as the wavelength adjustable element, the biconical fiber pyrometric cone is made simple, the introducing loss is little, just can realize its wavelength regulation characteristic by easy mechanical stretching, than fiber grating, the biconical fiber pyrometric cone is periodic to the modulation of wavelength, can be operated in theory any wavelength (as long as the light of this wavelength in optical fiber can low-loss transmission).In sum, the biconical fiber pyrometric cone is a kind of full fiber optic wavelength adjustable element of lower-cost excellent performance.
Doped fiber of the present invention can be the optical fiber of any rare earth element of doping, such as, can be Yb dosed optical fiber, Er-doped fiber, thulium doped fiber is mixed holmium optical fiber etc.
Advantage of the present invention is to use the biconical fiber pyrometric cone to realize the adjustable wavelength laser of full fiberize as the wavelength tuning element.The biconical fiber pyrometric cone is made simple, and cost is lower, thereby and the wavelength-modulated characteristic of biconical fiber pyrometric cone be periodically to be operated in any wavelength (as long as the light of this wavelength loss in the optical fiber of making Modulation Based on Optical Fiber Fused Taper is little).
Claims (4)
1. one kind is used the biconical fiber pyrometric cone as the adjustable full-optical-fiber laser of the wavelength of tuned cell, the output that it is characterized in that the pumping semiconductor laser links to each other with the pumping input of optical-fiber bundling device, the optical-fiber bundling device output links to each other with the doped fiber that is used as gain media, the doped fiber other end links to each other with a fibre optic isolater input, the fibre optic isolater output is welded to one with the Modulation Based on Optical Fiber Fused Taper that is used as the wavelength tuning element, the Modulation Based on Optical Fiber Fused Taper other end is welded to the fiber coupler input, output of coupler is welded to the input of optical-fiber bundling device, and laser is exported through output optical fibre.
2. a kind of biconical fiber pyrometric cone that uses according to claim 1 is as the adjustable full-optical-fiber laser of the wavelength of tuned cell, it is characterized in that being provided with optical switch or saturated absorbing body, optical switch or saturated absorbing body one end link to each other with the fibre optic isolater output, optical switch or the saturated absorbing body other end are welded to one with the Modulation Based on Optical Fiber Fused Taper that is used as the wavelength tuning element, the Modulation Based on Optical Fiber Fused Taper other end is welded to the fiber coupler input, output of coupler is welded to the input of optical-fiber bundling device, and pulse laser is exported through output optical fibre.
3. a kind of biconical fiber pyrometric cone that uses according to claim 1 and 2 is as the adjustable full-optical-fiber laser of the wavelength of tuned cell, it is characterized in that using Modulation Based on Optical Fiber Fused Taper as the wavelength adjustable element, just can realize its wavelength regulation characteristic by mechanical stretching, Modulation Based on Optical Fiber Fused Taper is a kind of full fiber optic wavelength adjustable element.
4. a kind of biconical fiber pyrometric cone that uses according to claim 1 and 2 is as the adjustable full-optical-fiber laser of the wavelength of tuned cell, it is characterized in that doped fiber is Yb dosed optical fiber, Er-doped fiber, thulium doped fiber, mixes a kind of in the holmium optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210456216XA CN102931577A (en) | 2012-11-14 | 2012-11-14 | All-fiber laser with adjustable wavelength employing biconical fiber melting taper as tuning element |
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| CN201210456216XA CN102931577A (en) | 2012-11-14 | 2012-11-14 | All-fiber laser with adjustable wavelength employing biconical fiber melting taper as tuning element |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129786A (en) * | 2016-07-18 | 2016-11-16 | 电子科技大学 | Tunable dual wavelength mode locked fiber laser based on tapered fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239434A (en) * | 2008-12-04 | 2011-11-09 | Imra美国公司 | Highly rare-earth-doped optical fibers for fiber lasers and amplifiers |
| CN102361211A (en) * | 2011-10-08 | 2012-02-22 | 哈尔滨工程大学 | Fiber laser based on micro-cavity control feedback effect |
| CN102570255A (en) * | 2011-12-30 | 2012-07-11 | 北京交通大学 | Multi-wavelength optical fiber laser |
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2012
- 2012-11-14 CN CN201210456216XA patent/CN102931577A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102239434A (en) * | 2008-12-04 | 2011-11-09 | Imra美国公司 | Highly rare-earth-doped optical fibers for fiber lasers and amplifiers |
| CN102361211A (en) * | 2011-10-08 | 2012-02-22 | 哈尔滨工程大学 | Fiber laser based on micro-cavity control feedback effect |
| CN102570255A (en) * | 2011-12-30 | 2012-07-11 | 北京交通大学 | Multi-wavelength optical fiber laser |
Non-Patent Citations (1)
| Title |
|---|
| KHANH KIEU等: ""Tuning of fiber lasers by use of a single-mode biconic fiber taper"", 《OPTICS LETTERS》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106129786A (en) * | 2016-07-18 | 2016-11-16 | 电子科技大学 | Tunable dual wavelength mode locked fiber laser based on tapered fiber |
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Application publication date: 20130213 |