CN1099740C - Multi-port coupled output femtosecond fiber laser - Google Patents
Multi-port coupled output femtosecond fiber laser Download PDFInfo
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- CN1099740C CN1099740C CN98113063A CN98113063A CN1099740C CN 1099740 C CN1099740 C CN 1099740C CN 98113063 A CN98113063 A CN 98113063A CN 98113063 A CN98113063 A CN 98113063A CN 1099740 C CN1099740 C CN 1099740C
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- fiber
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- optical fiber
- beam splitter
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- 239000000835 fiber Substances 0.000 title claims abstract description 59
- 239000013307 optical fiber Substances 0.000 claims abstract description 54
- 238000010168 coupling process Methods 0.000 claims abstract description 19
- 230000008878 coupling Effects 0.000 claims abstract description 18
- 238000005859 coupling reaction Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000010287 polarization Effects 0.000 claims abstract description 11
- 210000001503 joint Anatomy 0.000 claims abstract description 3
- 239000004065 semiconductor Substances 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000004927 fusion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Optical Couplings Of Light Guides (AREA)
Abstract
The femtosecond laser with multi-port coupling output is characterized in that pump light enters a transmission fiber and a fiber beam splitter through coupling, then enters an annular cavity fiber laser formed by butt joint of an erbium-doped fiber and a laser fiber through a wavelength division multiplexer, the annular cavity is provided with a polarized fiber isolator, a fiber polarization controller and a fiber output coupler, and the laser output end is provided with a multi-port output fiber power beam splitter; the split coupling of the optical fiber is realized, the laser transmission quality and the coupling efficiency are improved, one optical fiber laser obtains multi-port output, the split coupling ratio of each laser can be designed according to requirements, and the output laser is more convenient and flexible in application.
Description
Technical field
The present invention is the improvement of optical fiber laser structure, belongs to laser technology field.
Background technology
Because the beam splitting of optical fiber coupling adopts the methods of fusions in the prior art, thereby has destroyed the structure of inside of optical fibre, has also influenced laser and has transmitted in optical fiber, more can't determine the splitting ratio of laser beam.And have only an output port at existing fiber laser, use No. one beam splitter from laser, to be coupled out a part of laser; This makes troubles to use, except that using light beam, also will carry out the operating state of accurate Domain Synchronous or monitoring laser with other instruments, so often need multiport output in some applications.And because the problem of existing beam splitting coupling process makes it unresolved for a long time.
Summary of the invention
The objective of the invention is to overcome the beam splitting coupled problem of optical fiber, design the femto second optical fiber laser of multiport coupling output, can not only improve the transmission quality and the coupling efficiency of laser, and make output laser in application, become more flexible, convenient, and can be by design proportion output.
The objective of the invention is to realize by following scheme.The structure of the femto second optical fiber laser of designed multiport coupling output is, with the semiconductor laser is pumping source, pump light enters laser transmission fiber through fiber coupler, Transmission Fibers enters wavelength division multiplexer pump light is coupled in the circular cavity optic fibre laser, Transmission Fibers is provided with the optical fiber power beam splitter, it can certainty ratio tell beam of laser, is used for the monitoring of pump light; Opposite side at optic fiber ring-shaped cavity is provided with the optical fiber output coupler, can certainty ratio export laser; Have one section Er-doped fiber to dock with laser fiber at optic fiber ring-shaped cavity, the opposite side of Er-doped fiber is provided with the polarization fiber isolator on the annular chamber, is respectively equipped with optical fiber polarization controller in the both sides of isolator; Be provided with multiport output optical fibre power beam splitter at laser output, it can the beam splitting of certainty ratio multiport go out the purpose that some optical fiber are used for various needs.Wherein the structure of optical fiber power beam splitter is, with two output optical fibre terminations respectively side cut and polish, and with two tangent planes by being stitched together, the end face alignment, to dock with the end face that enters optical fiber, form the beam splitter of one-in-and-two-out, if need the coupling output of multiport by the end face after piecing together, only need on output optical fibre, to dock again the beam splitter of some this structures, and the certainty ratio beam splitting of output laser is to account for the ratiometric conversion that enters the fiber alignment area according to each output optical fibre butt joint area to draw.Feature of the present invention also is, all adopts this beam splitting structure of beam splitter in wavelength division multiplexer on designed fiber laser and the optical fiber output coupler.
Owing to the invention solves the beam splitting coupled problem of optical fiber, the transmission quality and the coupling efficiency of laser have not only been improved, thereby the making of the femto second optical fiber laser of multiport coupling output is become a reality, make a fiber laser can obtain the output of multiport laser, the beam splitting coupling ratio of each road laser can come design decision by the needs of practical application, satisfying various use needs, and make that output laser becomes more flexible, convenient in application, function is more; Designed femto second optical fiber laser can be realized multi-path laser output, is used for generation of the locked mode pulsewidth of input light source, laser of laser amplifier and spectrum monitoring, sync level signal or the like.
Description of drawings
Accompanying drawing 1 is the structural representation of the designed multiport coupling of the present invention output femto-second laser, and 1 is semiconductor laser among the figure, and 2 is the optical-fiber laser coupler, 3 is the optical fiber power beam splitter, and 4 are the output optical fibre of beam splitting, are used for the monitoring of pump light, 5 is laser transmission fiber, 6 is the optical fibre ring laser cavity, and 7 is Er-doped fiber, and 8 is optical fiber polarization controller, 9 is the polarization fiber isolator, 10 is the optical fiber output coupler, and 11 is the laser output optical fibre, and 12 is wavelength division multiplexer.
Embodiment
Describe specific embodiments of the present invention in detail below in conjunction with accompanying drawing.
Referring to accompanying drawing, the structure of the multiport coupling output femto second optical fiber laser that the present invention is designed is, with the semiconductor laser is pumping source, the 976nm pump light enters laser transmission fiber through accurate fiber coupler, Transmission Fibers enters 1.55 μ m/980nm wavelength division multiplexers pump light is coupled in the circular cavity optic fibre laser, Transmission Fibers is provided with two fiber port power beam splitters, tells the monitoring that one road optical fiber is used for pump light, and its luminous power is 1.8%; Opposite side at the fiber laser annular chamber is provided with the optical fiber output coupler, and its Output optical power is 3%; One section of the fiber laser annular chamber is Er-doped fiber and common laser fiber alignment looping chamber, is provided with the polarization fiber isolator on the opposite side of Er-doped fiber on the annular chamber, in the both sides of isolator optical fiber polarization controller is set respectively; Output port at the optical fiber output coupler is provided with multiple port fiber optical power beam splitter, tells three laser output optical fibres, and every optical fiber can design the different beam splitting ratio of making according to application need, also can be made into more output port if desired.The basic structure of its optical fiber power beam splitter is one-in-and-two-out, if oppositely use then becomes two and advances one and go out, so this beam splitting structure also can be used for the fiber beam splitting in wavelength division multiplexer and the optical fiber output coupler.And the prior art that is docked at of optical fiber and optical fiber is generally used.
Claims (2)
1, a kind of multiport coupling output femto second optical fiber laser, employing has semiconductor laser, fiber coupler, wavelength division multiplexer, Er-doped fiber and laser fiber, the optical fiber output coupler, polarization fiber isolator and optical fiber polarization controller, it is characterized in that, the structure of described laser is, with the semiconductor laser is pumping source, pump light enters laser transmission fiber through fiber coupler, Transmission Fibers enters wavelength division multiplexer pump light is coupled in the circular cavity optic fibre laser, Transmission Fibers is provided with the optical fiber power beam splitter, and its certainty ratio is told beam of laser and is used to monitor pump light; Opposite side at optic fiber ring-shaped cavity is provided with the optical fiber output coupler, and its certainty ratio beam splitting goes out to export laser; Have one section Er-doped fiber to dock with laser fiber in the fiber laser annular chamber, the opposite side of Er-doped fiber is provided with the polarization fiber isolator on annular chamber, in the both sides of isolator optical fiber polarization controller is set respectively; Be provided with multiport output optical fibre power beam splitter at laser output, each output port can the certainty ratio beam splitting be exported laser; The structure of described optical fiber power beam splitter is, with two output optical fibre terminations respectively side cut and polish, by being stitched together, the end face alignment is to dock with the end face that enters optical fiber by the end face after the assembly two tangent planes; The coupling output of multiport only needs to dock the beam splitter of this structure again on output optical fibre; The certainty ratio beam splitting of output laser is to account for the ratiometric conversion that enters the fiber alignment area according to each output optical fibre butt joint area to draw.
2, laser according to claim 1 is characterized in that, the fiber beam splitting in described wavelength division multiplexer and the optical fiber output coupler also all adopts the beam splitting structure of beam splitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113063A CN1099740C (en) | 1998-12-30 | 1998-12-30 | Multi-port coupled output femtosecond fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98113063A CN1099740C (en) | 1998-12-30 | 1998-12-30 | Multi-port coupled output femtosecond fiber laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1258945A CN1258945A (en) | 2000-07-05 |
| CN1099740C true CN1099740C (en) | 2003-01-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98113063A Expired - Fee Related CN1099740C (en) | 1998-12-30 | 1998-12-30 | Multi-port coupled output femtosecond fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1099740C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299160C (en) * | 2004-04-29 | 2007-02-07 | 清华大学 | Stimulated Brillouin scattering inhibiting method for optical fiber parametric amplification pumping source |
| WO2008105833A2 (en) * | 2006-09-18 | 2008-09-04 | Cornell Research Foundation, Inc. | All-normal-dispersion femtosecond fiber laser |
| CN100429847C (en) * | 2006-11-17 | 2008-10-29 | 华南师范大学 | Self-similar pulsed erbium doped fiber laser in femtosecond |
| CN100423385C (en) * | 2006-12-13 | 2008-10-01 | 北京航空航天大学 | A linear resonant cavity wide narrow line tunable optical fiber laser |
| CN100423384C (en) * | 2006-12-13 | 2008-10-01 | 北京航空航天大学 | Single frequency tunable doped erbium optical fiber laser system |
| CN102332679B (en) * | 2011-10-13 | 2012-08-08 | 北京交通大学 | Annular chamber coherent output fiber laser |
| CN103208732B (en) * | 2013-03-25 | 2018-11-13 | 苏州德龙激光股份有限公司 | A kind of laser is changed a device and its is changed point methods with SESAM's |
| CN111404009B (en) * | 2020-03-21 | 2021-09-10 | 哈尔滨工程大学 | Device and method for outputting orthogonal polarization laser based on double Brewster window multiports |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309455A (en) * | 1991-07-12 | 1994-05-03 | Ando Electric Co., Ltd. | High-power light pulse generating apparatus |
| CN1136247A (en) * | 1995-01-27 | 1996-11-20 | 皮雷利·卡维有限公司 | Bidirectional optical telecommunication system comprising bidirectional optical amplifier |
| JPH0964440A (en) * | 1995-08-23 | 1997-03-07 | Furukawa Electric Co Ltd:The | Optical fiber laser |
-
1998
- 1998-12-30 CN CN98113063A patent/CN1099740C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5309455A (en) * | 1991-07-12 | 1994-05-03 | Ando Electric Co., Ltd. | High-power light pulse generating apparatus |
| CN1136247A (en) * | 1995-01-27 | 1996-11-20 | 皮雷利·卡维有限公司 | Bidirectional optical telecommunication system comprising bidirectional optical amplifier |
| JPH0964440A (en) * | 1995-08-23 | 1997-03-07 | Furukawa Electric Co Ltd:The | Optical fiber laser |
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| Publication number | Publication date |
|---|---|
| CN1258945A (en) | 2000-07-05 |
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