CN102074880A - Single-mode fiber laser with mini resonance cavity structure - Google Patents
Single-mode fiber laser with mini resonance cavity structure Download PDFInfo
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- CN102074880A CN102074880A CN 201010594978 CN201010594978A CN102074880A CN 102074880 A CN102074880 A CN 102074880A CN 201010594978 CN201010594978 CN 201010594978 CN 201010594978 A CN201010594978 A CN 201010594978A CN 102074880 A CN102074880 A CN 102074880A
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Abstract
The invention discloses a single-mode fiber laser with a mini resonance cavity structure, and relates to the fields of fiber-optical communication and high power and high light beam quality requirements. The invention aims to solve the problem that the structure is too complicated, or the power is difficult to increase, or laser characteristics cannot meet the requirement in the conventional fiber laser. The laser comprises an optical fiber, an optical grating and a pumping source. A mini resonance cavity (4) is arranged in the optical fiber, has a shape of a ring and tangent lines tangent with the ring, or a rectangle, and is positioned in the fiber core or a joint of a cladding and the fiber core. In the process of manufacturing the mini resonance cavity, the optical fiber is exposed by an ultraviolet laser or a femtosecond laser, the refractive index on the exposure part is higher that that of a peripheral medium, and the structure of the mini resonance cavity (4) is formed. The single-mode fiber laser is mainly used for fiber-optical communication and industrial processing.
Description
Technical field
The present invention relates to a kind of single mode fiber laser.Being specially adapted to has high-quality requirement or the higher high light line quality field of power to the optical frequency bandwidth.
Background technology
Since laser came out, its good coherence had obtained approval widely, along with the development of optical communication technique, the quality of laser had also been had better requirement.Along with the extensive use of modern network, people are more and more higher to the requirement of the capacity of communication network and speed, and the quality in signal laser source becomes a fundamental influence factor of big Capacity Optical communication.
At present in the research of laser performance, there is numerous R﹠D teams carrying out, and obtained no small achievement.The development of laser is nothing but two aspects, the one, and high-power, this is mainly used in the cutting of industry, military contour power requirement field; Another is the high-quality communication laser of narrow linewidth, in this field, concerning laser require power to compare before very little on the one hand, but the frequency bandwidth and the mould field quality of output laser then had higher requirement relatively.Nowadays optical communication has become the main means of remote big volume transport information, and extraordinary communication is at full speed with the development progress of laser, and various reports about laser again and again and extremely.At first mostly be the single-frequency characteristic, power characteristic and aspect such as stable for the laser basic demand that is used to communicate by letter.
The development of narrow linewidth laser at present is day by day ripe, but still is faced with several difficult.At first lasing apparatus structure or too complicated, perhaps power is difficult to increase, again or characteristic of laser does not reach requirement.
Summary of the invention
Technical problem to be solved by this invention is to overcome the structure of present fiber laser or too complicated, and perhaps power is difficult to increase, again or characteristic of laser does not reach requirement.
The present invention solves technical scheme that its technical problem adopts:
A kind of single mode fiber laser of miniature resonant cavity body structure, this laser comprises, optical fiber, grating, and pumping source.
The miniature resonant cavity is set in optical fiber, the shape of miniature resonant cavity be annulus and with tangent tangent line or the rectangle of annulus, its position is in fibre core or the junction of covering and fibre core.
The radius of described miniature resonant cavity annulus is 2 microns～10 microns; The radius of fibre core is 2 microns～10 microns.
The making of miniature resonant cavity adopts ultraviolet laser or femto-second laser that optical fiber is exposed, the projecting medium refraction index of exposure place refractive index, thus produce the structure of miniature resonant cavity; The single-mode laser output dependence miniature resonant cavity of the single-mode laser of whole miniature resonant cavity body structure is to the modulating action of input pumping laser.
The present invention compares the beneficial effect that is had with prior art:
Whole laser structure compactness has the miniature resonant cavity, makes the laser spectroscopy of output be easy to control; Because adopted the structure of miniature resonant cavity, it is bigger that effective mode field area of the optical fiber that is adopted can be done, it is non-linear to be difficult for generation, can export bigger luminous power relatively.
Description of drawings
Fig. 1 is positioned at the single mode fiber laser of the miniature resonant cavity body structure of covering and fibre core intersection for annulus and with the micro resonant cavity body of tangent two tangent lines of annulus.
Fig. 2 is positioned at the single mode fiber laser of the miniature resonant cavity body structure of covering and fibre core intersection for annulus and with the micro resonant cavity body of the tangent tangent line of annulus.
Fig. 3 is positioned at the single mode fiber laser of the miniature resonant cavity body structure of fibre core for annulus and with the micro resonant cavity body of tangent two tangent lines of annulus.
Fig. 4 is positioned at the single mode fiber laser of the miniature resonant cavity body structure of fibre core for annulus and with the micro resonant cavity body of the tangent tangent line of annulus.
Fig. 5 is the single-mode laser of the miniature resonant cavity body structure that has the exposure area to be connected between two fibre cores in many fibre cores to form.
Fig. 6 is the sectional view of Fig. 5.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
Execution mode one, a kind of single mode fiber laser of miniature resonant cavity body structure is seen Fig. 1, this laser comprises: optical fiber, first grating, 31, the second gratings 32 and pumping source 5.Miniature resonant cavity 4 is set in optical fiber, the shape of miniature resonant cavity 4 is that annulus reaches and two tangent tangent lines of annulus, be positioned at the junction of covering and fibre core, and occupy between first grating 31 and second grating 32, wherein Zuo Ce tangent line is by first grating 31; 5 pairs of fiber end face pumpings of pumping source.
Wherein miniature resonant cavity 4 is passed through exposed optical fiber to be formed the projecting medium refraction index of exposure place refractive index by femto-second laser.
The each several part parameter is: the radius of fibre core 1 is 2 microns; Covering 2 thickness are 58.5 microns; The equal total reflection of light wave of 31 pairs of 1.55 microns ± 20 micron wave lengths of fiber grating, 32 light waves to 1.55 micron wave lengths of fiber grating have 4% reflectivity; The annular radii of miniature resonant cavity 4 is 10 microns; Do end pumping with pumping source 5.
Execution mode two, a kind of single mode fiber laser of miniature resonant cavity body structure is seen Fig. 2, this laser comprises: optical fiber, first grating, 31, the second gratings 32 and pumping source 5.
Miniature resonant cavity 4 is set in optical fiber, and the shape of miniature resonant cavity 4 is that annulus reaches and a tangent tangent line of annulus, is positioned at the junction of covering and fibre core, and occupy between first grating 31 and second grating 32, and tangent line is by first grating 31; 5 pairs of fiber end face pumpings of pumping source.
Wherein miniature resonant cavity 4 is passed through exposed optical fiber to be formed the projecting medium refraction index of exposure place refractive index by ultraviolet laser.
The each several part parameter is: 5 microns of fibre core 1 radiuses; Covering 2 thickness are 57.5 microns; The equal total reflection of light wave of 31 pairs of 1.51 microns ± 40 micron wave lengths of fiber grating, 32 light waves to 1.51 micron wave lengths of fiber grating have 4% reflectivity; The annular radii of miniature resonant cavity 4 is 9 microns; Do end pumping with pumping source 5.
Execution mode three, a kind of single mode fiber laser of miniature resonant cavity body structure is seen Fig. 3, this laser comprises: optical fiber, first grating, 31, the second gratings 32 and pumping source 5.
Miniature resonant cavity 4 is set in optical fiber, and the shape of miniature resonant cavity 4 is that annulus reaches and two tangent tangent lines of annulus, is positioned at fibre core, and occupy between first grating 31 and second grating 32, and wherein the left side tangent line is by first grating 31; 5 pairs of fiber end face pumpings of pumping source.
Wherein miniature resonant cavity 4 is passed through exposed optical fiber to be formed the projecting medium refraction index of exposure place refractive index by femto-second laser.
The each several part parameter is: 8 microns of fibre core 1 radiuses; Covering 2 thickness are 54.5 microns; The equal total reflection of light wave of 31 pairs of 1.31 microns ± 60 micron wave lengths of fiber grating, 32 light waves to 1.31 micron wave lengths of fiber grating have 4% reflectivity; The annular radii of miniature resonant cavity 4 is 2 microns; Do end pumping with pumping source 5.
Execution mode four, a kind of single mode fiber laser of miniature resonant cavity body structure is seen Fig. 4, this laser comprises: optical fiber, first grating, 31, the second gratings 32 and pumping source 5.
Miniature resonant cavity 4 is set in optical fiber, and the shape of miniature resonant cavity 4 is that annulus reaches and a tangent tangent line of annulus, is positioned at fibre core, and occupy between first grating 31 and second grating 32, and the left side tangent line is by first grating 31; 5 pairs of optical fiber side-pumpings of pumping source.
Wherein miniature resonant cavity 4 is passed through exposed optical fiber to be formed the projecting medium refraction index of exposure place refractive index by ultraviolet laser.
The each several part parameter is: 10 microns of fibre core 1 radiuses; Covering 2 thickness are 52.5 microns; The equal total reflection of light wave of 31 pairs of 1.51 microns ± 80 micron wave lengths of fiber grating, 32 light waves to 1.51 micron wave lengths of fiber grating have 4% reflectivity; The annular radii of miniature resonant cavity 4 is 2 microns; Do profile pump with pumping source 5.
Execution mode five, a kind of single mode fiber laser of miniature resonant cavity body structure, see Fig. 5,6, this laser comprises: four-core optical fiber, its first fibre core 11, second fibre core 12, the 3rd fibre core 13, the 4th fibre core 14, the refractive index of these four fibre cores is identical, first grating, 31, the second gratings 32 and pumping source 5.
In optical fiber, be provided with by second fibre core 12 between first exposure region 41, second exposure region 42 and first exposure region 41 and second exposure region 42, rectangle miniature resonant cavity that the 3rd fibre core 13 constitutes, occupy between first grating 31 and second grating 32, first exposure region 41, second exposure region, 42 refractive indexes are identical with fibre core, as shown in Figure 5; 5 pairs of fiber end face pumpings of pumping source.
Wherein first exposure area 41, second exposure region 42 are passed through exposed optical fiber to be formed the projecting medium refraction index of exposure place refractive index by femto-second laser.
The each several part parameter is: the radius of first fibre core 11, second fibre core 12, the 3rd fibre core 13, the 4th fibre core 14 is 2.5 microns, evenly is arranged on the cross section in axle center 10 microns of the spaces, center of four fibre cores; Being in four covering 2 radiuses outside the fibre core is 62.5 microns; The equal total reflection of light wave of 31 pairs of 1.55 microns ± 100 micron wave lengths of fiber grating, 32 light waves to 1.55 micron wave lengths of fiber grating have 4% reflectivity; Distance between the exposure area is 5.5 microns; Do end pumping with pumping source 5.
Claims (4)
1. the single mode fiber laser of a miniature resonant cavity body structure, this laser comprises, optical fiber, grating, and pumping source; It is characterized in that:
Miniature resonant cavity (4) is set in optical fiber, the shape of miniature resonant cavity (4) be annulus and with tangent tangent line or the rectangle of annulus, its position is in fibre core or the junction of covering and fibre core.
2. the single mode fiber laser of a kind of miniature resonant cavity body structure according to claim 1 is characterized in that:
The radius of described miniature resonant cavity (4) annulus is 2 microns～10 microns;
The radius of fibre core (1) is 2 microns～10 microns.
3. the single mode fiber laser of a kind of miniature resonant cavity body structure according to claim 1 is characterized in that: miniature resonant cavity (4) is passed through exposed optical fiber to be formed the projecting medium refraction index of exposure place refractive index by femtosecond or ultraviolet laser.
4. the single mode fiber laser of a kind of miniature resonant cavity body structure according to claim 1, it is characterized in that: described optical fiber is four-core optical fiber, its first fibre core (11), second fibre core (12), the 3rd fibre core (13), the refractive index of the 4th fibre core (14) is identical, in optical fiber, be provided with by first exposure region (41), second fibre core (12) between second exposure region (42) and first exposure region (41) and second exposure region (42), the 3rd fibre core (13) constitutes rectangle miniature resonant cavity, occupy between first grating (31) and second grating (32) first exposure region (41), second exposure region (42) refractive index is identical with fibre core.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010105949787A CN102074880B (en) | 2010-12-20 | 2010-12-20 | Single-mode fiber laser with mini resonance cavity structure |
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| CN2010105949787A CN102074880B (en) | 2010-12-20 | 2010-12-20 | Single-mode fiber laser with mini resonance cavity structure |
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| CN102074880A true CN102074880A (en) | 2011-05-25 |
| CN102074880B CN102074880B (en) | 2012-06-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033882A (en) * | 2012-12-31 | 2013-04-10 | 青岛农业大学 | Manufacturing method for dual-core optical fiber micro-ring resonator |
| CN104319609A (en) * | 2014-10-23 | 2015-01-28 | 北京工业大学 | Optical fiber micro-structural resonant cavity |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5436925A (en) * | 1994-03-01 | 1995-07-25 | Hewlett-Packard Company | Colliding pulse mode-locked fiber ring laser using a semiconductor saturable absorber |
| US6272165B1 (en) * | 1995-12-01 | 2001-08-07 | The University Of Sydney | Distributed feedback ring laser |
| CN101013791A (en) * | 2007-02-05 | 2007-08-08 | 北京交通大学 | Ring tunable single-frequency single-polarization fiber laser |
| CN101051164A (en) * | 2006-04-06 | 2007-10-10 | 杨爱萍 | Circular chamber regulating Q optical fiber laser regenerating amplifier |
| CN101132103A (en) * | 2007-08-23 | 2008-02-27 | 上海交通大学 | Single longitudinal mode optical fiber laser based on Fabry-Perot resonant cavity |
-
2010
- 2010-12-20 CN CN2010105949787A patent/CN102074880B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5436925A (en) * | 1994-03-01 | 1995-07-25 | Hewlett-Packard Company | Colliding pulse mode-locked fiber ring laser using a semiconductor saturable absorber |
| US6272165B1 (en) * | 1995-12-01 | 2001-08-07 | The University Of Sydney | Distributed feedback ring laser |
| CN101051164A (en) * | 2006-04-06 | 2007-10-10 | 杨爱萍 | Circular chamber regulating Q optical fiber laser regenerating amplifier |
| CN101013791A (en) * | 2007-02-05 | 2007-08-08 | 北京交通大学 | Ring tunable single-frequency single-polarization fiber laser |
| CN101132103A (en) * | 2007-08-23 | 2008-02-27 | 上海交通大学 | Single longitudinal mode optical fiber laser based on Fabry-Perot resonant cavity |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033882A (en) * | 2012-12-31 | 2013-04-10 | 青岛农业大学 | Manufacturing method for dual-core optical fiber micro-ring resonator |
| CN103033882B (en) * | 2012-12-31 | 2018-04-03 | 青岛农业大学 | A kind of preparation method of twin-core fiber micro-ring resonator |
| CN104319609A (en) * | 2014-10-23 | 2015-01-28 | 北京工业大学 | Optical fiber micro-structural resonant cavity |
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| CN102074880B (en) | 2012-06-27 |
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