CN103499856A - Hectowatt collimation type isolator - Google Patents
Hectowatt collimation type isolator Download PDFInfo
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- CN103499856A CN103499856A CN201310437178.8A CN201310437178A CN103499856A CN 103499856 A CN103499856 A CN 103499856A CN 201310437178 A CN201310437178 A CN 201310437178A CN 103499856 A CN103499856 A CN 103499856A
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Abstract
The invention discloses a hectowatt collimation type isolator which comprises a mould stripping device (1), an optical collimator (2), an isolator chipware (3) and a beam expander (4), wherein the mould stripping device (1), the optical collimator (2), the isolator chipware (3) and the beam expander (4) are arranged along a forward direction light incident optical axis. The mould stripping device (1) is connected with the optical collimator (2) through optical fibers (10). Two symmetrically-arranged reflective mirrors (5) are arranged between the optical collimator (2) and the isolator chipware (3). The mould stripping device (1), the optical collimator (2), the isolator chipware (3), the beam expander (4) and the reflective mirrors (5) are all arranged in a water-cooled packaging device (11). The hectowatt collimation type isolator has the advantages of being high in isolation, good in heat dissipation effect and stable in working performance, and can be used in high-power pulsed lasers.
Description
Technical field
The present invention relates to a kind of isolator, particularly a kind of hectowatt grade collimation-type isolator, belong to laser field.
Background technology
Optoisolator be only allow light along a direction by and stop in contrary direction the optical passive component that light passes through.Semiconductor laser, image intensifer and fiber laser etc. are very responsive for the reflected light from connector, fusion point, wave filter etc., and may cause performance can worsen even damage, therefore need to stop reflected light with optoisolator.In optical fiber communication, can be by well isolation of light isolation by the light of optical fiber echo reflection.In the application such as light laser, optoisolator usually is used in light path and is used for interference and the damage of avoiding the echo in light path to cause light source, pumping source and other luminescent devices.
The optoisolator overwhelming majority in using at present is some low power optoisolators, often between several watts to tens watts.Because when it come to tend to because technical reason, the phenomenons such as insertion loss is large, radiating effect is bad easily occur to high power, can produce thus that isolation is not high, the adverse consequences of poor work stability, severe patient also can bring damage to laser instrument.Before this, domestic also the appearance can be for the optoisolator of 100W high-power pulsed laser.
Summary of the invention
The object of the invention is to, a kind of hectowatt grade collimation-type isolator is provided, it has advantages of high-isolation, good heat dissipation effect and stable work in work, can be used in high-power pulsed laser.
Technical scheme of the present invention: a kind of hectowatt grade collimation-type isolator, comprise along the mode stripper set gradually on forward light incident light axis, optical fiber collimator, isolator chipware and beam expanding lens, mode stripper is connected with optical fiber collimator by optical fiber, is provided with 2 symmetrically arranged catoptrons between optical fiber collimator and isolator chipware; Described mode stripper, optical fiber collimator, isolator chipware, beam expanding lens and catoptron all are arranged in the water-cooled packaging system.Mode stripper, for the pump light of cancellation remnants, can also divest the laser that drains to the higher order mode transmitted inner cladding from fibre core.Owing to having adopted the water-cooled packaging system, greatly improve radiating effect, thereby improved the stability of optoisolator, make it under long high power work state, still can keep stable work.
In aforesaid hectowatt grade collimation-type isolator, the angle between described 2 catoptrons and optical axis is 40 °～50 °.
In aforesaid hectowatt grade collimation-type isolator, the angle between described 2 catoptrons and optical axis is 45 °.Form a very little gap between described 2 catoptrons, the effect of diaphragm is played in this gap.
In aforesaid hectowatt grade collimation-type isolator, described optical fiber collimator comprises patch cord and lens, and the patch cord scioptics are connected with the light path of isolator chipware; The afterbody of described patch cord is provided with end cap.
In aforesaid hectowatt grade collimation-type isolator, described isolator chipware comprises along the first birefringece crystal set gradually on forward light incident light axis, Faraday polarization apparatus, 1/2 wave plate and the second birefringece crystal.Described 1/2 wave plate makes phase change 1/4 π of light.
In aforesaid hectowatt grade collimation-type isolator, described catoptron adopts ceramic reflecting mirror, bronze mirror or high anti-catoptron.Catoptron also can adopt the material making preferably of other reflective function.
In aforesaid hectowatt grade collimation-type isolator, also comprise magnetic tube, described Faraday polarization apparatus is located in magnetic tube, and the first birefringece crystal and the second birefringece crystal are located at respectively the two ends of magnetic tube; The optically-active angle of described Faraday polarization apparatus is 45 °.
In aforesaid hectowatt grade collimation-type isolator, described beam expanding lens comprises negative lens and the positive lens set gradually along on forward light incident light axis; Be provided with diaphragm between described negative lens and the second birefringece crystal.
In aforesaid hectowatt grade collimation-type isolator, described 1/2 wave plate passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal.
In aforesaid hectowatt grade collimation-type isolator, the first birefringece crystal and the second birefringece crystal all adopt the YVO4 crystal.
In aforesaid hectowatt grade collimation-type isolator, described water-cooled packaging system comprises housing, waterway, water inlet and water delivering orifice, a wherein end of described housing is provided with water inlet and water delivering orifice, water inlet is located at the below of housing, water delivering orifice is located at the top of housing, between the outer wall of housing and inwall, is hollow structure, and described water inlet is connected with this hollow structure with water delivering orifice, waterway is located at the end of housing and is communicated with hollow structure, and mode stripper is located in waterway.
In described hectowatt grade collimation-type isolator, in housing, the inwall corresponding with reflector position is provided with the diaphragm of F:-10～0mm.
In aforesaid hectowatt grade collimation-type isolator, in housing, the inwall corresponding with reflector position is provided with the diaphragm of F:-5mm.
Compared with prior art, adopt more than structure of the present invention can be increased to 100W by power, by adopting the water-cooled packaging system, effectively improved radiating effect, thereby improved the stability of optoisolator, made it under long high power work state, still can keep stable work.
By on the inwall of housing, diaphragm being set, can by the beam divergence that reflects in water, can effectively prevent that reflected light from shining directly on inwall, play on the one hand the effect of protection inwall, can more effectively dispel the heat on the other hand.
By establishing die set, first it is shelled to mould and processed before light incides collimating apparatus, divest harmful light, for example: remnant pump light, effectively protect collimating apparatus, can also divest the laser that drains to the higher order mode transmitted inner cladding from fibre core.Adopt the collimating apparatus of end cap and lens combination can make it than the larger power of traditional collimating apparatus carrying.
By 2 catoptrons that are arranged symmetrically with are set between the first optical fiber collimator and isolator chipware, and increased by 1/2 wave plate, the power of both forward and reverse directions the present invention realized more than all can reach hectowatt, and there is no to produce because of high power too high loss, for the industrial use of hectowatt grade high-power pulsed laser is laid a good foundation.
The accompanying drawing explanation
Fig. 1 is the logical light schematic diagram of forward of the present invention;
Fig. 2 is oppositely logical light schematic diagram of the present invention;
Fig. 3 is the structural representation of water-cooled packaging system.
Being labeled as in accompanying drawing: 1-mode stripper, 2-optical fiber collimator, 3-isolator chipware, 4-beam expanding lens, the 5-catoptron, 6-the first birefringece crystal, 7-Faraday polarization apparatus, 8-1/2 wave plate, 9-the second birefringece crystal, 10-optical fiber, 11-water-cooled packaging system, 12-the first patch cord, the 13-first lens, 14-negative lens, 15-positive lens, 16-magnetic tube, the 17-diaphragm, 18-end cap, 19-diaphragm, 20-housing, the 21-waterway, 22-water inlet, 23-water delivering orifice.
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail, but not as the present invention being done to the foundation of any restriction.
Embodiments of the invention 1: as shown in Figure 1, a kind of hectowatt grade collimation-type isolator, comprise along the mode stripper 1 set gradually on forward light incident light axis, optical fiber collimator 2, isolator chipware 3 and beam expanding lens 4, mode stripper 1 is connected with optical fiber collimator 2 by optical fiber 10, is provided with 2 symmetrically arranged catoptrons 5 between optical fiber collimator 2 and isolator chipware 3; Described mode stripper 1, optical fiber collimator 2, isolator chipware 3, beam expanding lens 4 and catoptron 5 all are arranged in water-cooled packaging system 11.Angle between 2 catoptrons 5 and optical axis is 45 °.
Also comprise magnetic tube 16, described Faraday polarization apparatus 7 is located in magnetic tube 16, and the first birefringece crystal 6 and the second birefringece crystal 9 are located at respectively the two ends of magnetic tube 16; The optically-active angle of described Faraday polarization apparatus 7 is 45 °.Described beam expanding lens 4 comprises along the negative lens 14 set gradually on forward light incident light axis and positive lens 15; Be provided with diaphragm 17 between described negative lens 14 and the second birefringece crystal 9.1/2 wave plate 8 passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal 9.The first birefringece crystal 6 and the second birefringece crystal 9 all adopt the YVO4 crystal.
As shown in Figure 3, water-cooled packaging system 11 comprises housing 20, waterway 21, water inlet 22 and water delivering orifice 23, a wherein end of described housing 20 is provided with water inlet 22 and water delivering orifice 23, water inlet 22 is located at the below of housing 20, water delivering orifice 23 is located at the top of housing 20, between the outer wall of housing 20 and inwall, is hollow structure, and described water inlet 22 is connected with this hollow structure with water delivering orifice 23, waterway 21 is located at the end of housing 20 and is communicated with hollow structure, and mode stripper 1 is located in waterway 21.In housing 20, the inwall corresponding with catoptron 5 positions is provided with the diaphragm 19 of F:0mm.
Embodiments of the invention 2: as shown in Figure 1, a kind of hectowatt grade collimation-type isolator, comprise along the mode stripper 1 set gradually on forward light incident light axis, optical fiber collimator 2, isolator chipware 3 and beam expanding lens 4, mode stripper 1 is connected with optical fiber collimator 2 by optical fiber 10, is provided with 2 symmetrically arranged catoptrons 5 between optical fiber collimator 2 and isolator chipware 3; Described mode stripper 1, optical fiber collimator 2, isolator chipware 3, beam expanding lens 4 and catoptron 5 all are arranged in water-cooled packaging system 11.Angle between 2 catoptrons 5 and optical axis is 40 °.
Also comprise magnetic tube 16, described Faraday polarization apparatus 7 is located in magnetic tube 16, and the first birefringece crystal 6 and the second birefringece crystal 9 are located at respectively the two ends of magnetic tube 16; The optically-active angle of described Faraday polarization apparatus 7 is 45 °.Described beam expanding lens 4 comprises along the negative lens 14 set gradually on forward light incident light axis and positive lens 15; Be provided with diaphragm 17 between described negative lens 14 and the second birefringece crystal 9.1/2 wave plate 8 passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal 9.The first birefringece crystal 6 and the second birefringece crystal 9 all adopt the YVO4 crystal.
As shown in Figure 3, water-cooled packaging system 11 comprises housing 20, waterway 21, water inlet 22 and water delivering orifice 23, a wherein end of described housing 20 is provided with water inlet 22 and water delivering orifice 23, water inlet 22 is located at the below of housing 20, water delivering orifice 23 is located at the top of housing 20, between the outer wall of housing 20 and inwall, is hollow structure, and described water inlet 22 is connected with this hollow structure with water delivering orifice 23, waterway 21 is located at the end of housing 20 and is communicated with hollow structure, and mode stripper 1 is located in waterway 21.In housing 20, the inwall corresponding with catoptron 5 positions is provided with the diaphragm 19 of F:-10mm.
Embodiments of the invention 3: as shown in Figure 1, a kind of hectowatt grade collimation-type isolator, comprise along the mode stripper 1 set gradually on forward light incident light axis, optical fiber collimator 2, isolator chipware 3 and beam expanding lens 4, mode stripper 1 is connected with optical fiber collimator 2 by optical fiber 10, is provided with 2 symmetrically arranged catoptrons 5 between optical fiber collimator 2 and isolator chipware 3; Described mode stripper 1, optical fiber collimator 2, isolator chipware 3, beam expanding lens 4 and catoptron 5 all are arranged in water-cooled packaging system 11.Angle between 2 catoptrons 5 and optical axis is 50 °.
Also comprise magnetic tube 16, described Faraday polarization apparatus 7 is located in magnetic tube 16, and the first birefringece crystal 6 and the second birefringece crystal 9 are located at respectively the two ends of magnetic tube 16; The optically-active angle of described Faraday polarization apparatus 7 is 45 °.Described beam expanding lens 4 comprises along the negative lens 14 set gradually on forward light incident light axis and positive lens 15; Be provided with diaphragm 17 between described negative lens 14 and the second birefringece crystal 9.1/2 wave plate 8 passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal 9.The first birefringece crystal 6 and the second birefringece crystal 9 all adopt the YVO4 crystal.
As shown in Figure 3, water-cooled packaging system 11 comprises housing 20, waterway 21, water inlet 22 and water delivering orifice 23, a wherein end of described housing 20 is provided with water inlet 22 and water delivering orifice 23, water inlet 22 is located at the below of housing 20, water delivering orifice 23 is located at the top of housing 20, between the outer wall of housing 20 and inwall, is hollow structure, and described water inlet 22 is connected with this hollow structure with water delivering orifice 23, waterway 21 is located at the end of housing 20 and is communicated with hollow structure, and mode stripper 1 is located in waterway 21.In housing 20, the inwall corresponding with catoptron 5 positions is provided with the diaphragm 19 of F:-5mm.
Principle of work of the present invention: as shown in Figure 1, light positive is to when transmission, and light enters optical fiber collimator 2 by the rear clean end cap 18 of mode stripper 1, and the light beam of transmission in optical fiber 10 is converted into to collimated light, improves coupling efficiency.Then light enters the first birefringece crystal 6, is divided into o light and e light, and both separate rapidly the certain angle transmission and enter the Faraday polarization apparatus 7 of 45 °.By Faraday polarization apparatus 7, the vibration plane of o light and e light separately to same direction rotation 45 °.Postrotational o light and e light, after 1/2 wave plate 8, have all changed 45 ° to same direction again.O light now and e light enter the second birefringece crystal 9, close light and incide beam expanding lens 4 bright dippings, have realized the forward transmission of light.
As shown in Figure 2, when light path is reverse, at first light pass through beam expanding lens 4, and then incide in the second birefringece crystal 9, is divided into fast o light and e light.The o light returned and e light are through the effect of 1/2 wave plate 8, and its vibration plane has changed 45 ° to same direction again separately.Due to the nonreciprocity of Faraday effect, o light and e light are by after Faraday rotator 7, and polarization direction is still to 45 ° of same direction rotations, and original like this o light has become e light and o light after entering the first birefringece crystal 6 with e light.Due to the difference of refractive index, this two separating light beam no longer pools a light beam along original light path, makes on the contrary the distance of its separation increase.After through the reflection of the catoptron 5 between optical fiber collimator 2 and the first birefringece crystal 6, o light and e light are reflected away separately with the direction perpendicular to 90 °, optical axis respectively, to such an extent as to reflected light is again in coupled into optical fibres collimating apparatus 2, thereby reached the target of reverse isolation.O light and e light perpendicular to optical axis incide respectively on the diaphragm 19 be arranged on housing 20 inwalls, because diaphragm 19 adopts negative lens, divergence of beam can be gone out, and the heat of o light and e light is distributed in water uniformly.
The heat produced in these two processes, through the circulation of water-cooled packaging system 11 interior water, take out of rapidly, thereby reached good radiating effect.
Claims (9)
1. a hectowatt grade collimation-type isolator, it is characterized in that: comprise along the mode stripper (1) set gradually on forward light incident light axis, optical fiber collimator (2), isolator chipware (3) and beam expanding lens (4), mode stripper (1) is connected with optical fiber collimator (2) by optical fiber (10), between optical fiber collimator (2) and isolator chipware (3), is provided with 2 symmetrically arranged catoptrons (5); Described mode stripper (1), optical fiber collimator (2), isolator chipware (3), beam expanding lens (4) and catoptron (5) all are arranged in water-cooled packaging system (11).
2. hectowatt grade collimation-type isolator according to claim 1, it is characterized in that: the angle between described 2 catoptrons (5) and optical axis is 40 °～50 °; Described catoptron (5) adopts ceramic reflecting mirror, bronze mirror or high anti-catoptron.
3. hectowatt grade collimation-type isolator according to claim 1, it is characterized in that: described optical fiber collimator (2) comprises patch cord (12) and lens (13), patch cord (12) scioptics (13) are connected with the light path of isolator chipware (3); The afterbody of described patch cord (12) is provided with end cap (18).
4. according to claim 1 or 2 or 3 described hectowatt grade collimation-type isolators, it is characterized in that: described isolator chipware (3) comprises along the first birefringece crystal (6) set gradually on forward light incident light axis, Faraday polarization apparatus (7), 1/2 wave plate (8) and the second birefringece crystal (9); Described 1/2 wave plate (8) passes through the ultra-violet curing glue on the light inlet end face of the second birefringece crystal (9).
5. hectowatt grade collimation-type isolator according to claim 4, it is characterized in that: also comprise magnetic tube (16), described Faraday polarization apparatus (7) is located in magnetic tube (16), and the first birefringece crystal (6) and the second birefringece crystal (9) are located at respectively the two ends of magnetic tube (16); The optically-active angle of described Faraday polarization apparatus (7) is 45 °.
6. hectowatt grade collimation-type isolator according to claim 4, it is characterized in that: described beam expanding lens (4) comprises along the negative lens (14) set gradually on forward light incident light axis and positive lens (15); Be provided with diaphragm (17) between described negative lens (14) and the second birefringece crystal (9).
7. hectowatt grade collimation-type isolator according to claim 4, it is characterized in that: the first birefringece crystal (6) and the second birefringece crystal (9) all adopt the YVO4 crystal.
8. hectowatt grade collimation-type isolator according to claim 1, it is characterized in that: described water-cooled packaging system (11) comprises housing (20), waterway (21), water inlet (22) and water delivering orifice (23), a wherein end of described housing (20) is provided with water inlet (22) and water delivering orifice (23), water inlet (22) is located at the below of housing (20), water delivering orifice (23) is located at the top of housing (20), between the outer wall of housing (20) and inwall, it is hollow structure, described water inlet (22) is connected with this hollow structure with water delivering orifice (23), waterway (21) is arranged on the two ends in housing (20), waterway (21) is located at the end of housing (20) and is communicated with hollow structure, mode stripper (1) is located in waterway (21).
9. hectowatt grade collimation-type isolator according to claim 8 is characterized in that: in described housing (20), the inwall corresponding with catoptron (5) position is provided with the diaphragm (19) of F:-10～0mm.
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| CN201310437178.8A CN103499856B (en) | 2013-09-23 | 2013-09-23 | Hectowatt collimation type isolator |
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| CN201310437178.8A CN103499856B (en) | 2013-09-23 | 2013-09-23 | Hectowatt collimation type isolator |
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| CN103499856A true CN103499856A (en) | 2014-01-08 |
| CN103499856B CN103499856B (en) | 2015-04-22 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852825A (en) * | 2014-03-04 | 2014-06-11 | 青岛海泰光电技术有限公司 | Optical isolator |
| CN105572916A (en) * | 2016-02-03 | 2016-05-11 | 深圳市镭神智能系统有限公司 | Opto-isolator |
| CN106443887A (en) * | 2016-10-09 | 2017-02-22 | 武汉锐科光纤激光技术股份有限公司 | Feedback optical isolator for high power all-fiber laser |
| CN114779503A (en) * | 2022-03-28 | 2022-07-22 | 安徽科瑞思创晶体材料有限责任公司 | TGG optic fibre laser isolator |
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| CN201417351Y (en) * | 2009-06-25 | 2010-03-03 | 福州高意通讯有限公司 | An optical isolator of high power |
| US7715664B1 (en) * | 2007-10-29 | 2010-05-11 | Agiltron, Inc. | High power optical isolator |
| CN103278943A (en) * | 2013-03-29 | 2013-09-04 | 北京航空航天大学 | Faraday rotator suitable for high-power opto-isolator |
| CN203551835U (en) * | 2013-09-23 | 2014-04-16 | 深圳市创鑫激光技术有限公司 | Hundred-watt level collimation type isolator |
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2013
- 2013-09-23 CN CN201310437178.8A patent/CN103499856B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US7715664B1 (en) * | 2007-10-29 | 2010-05-11 | Agiltron, Inc. | High power optical isolator |
| CN201417351Y (en) * | 2009-06-25 | 2010-03-03 | 福州高意通讯有限公司 | An optical isolator of high power |
| CN103278943A (en) * | 2013-03-29 | 2013-09-04 | 北京航空航天大学 | Faraday rotator suitable for high-power opto-isolator |
| CN203551835U (en) * | 2013-09-23 | 2014-04-16 | 深圳市创鑫激光技术有限公司 | Hundred-watt level collimation type isolator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103852825A (en) * | 2014-03-04 | 2014-06-11 | 青岛海泰光电技术有限公司 | Optical isolator |
| CN105572916A (en) * | 2016-02-03 | 2016-05-11 | 深圳市镭神智能系统有限公司 | Opto-isolator |
| CN106443887A (en) * | 2016-10-09 | 2017-02-22 | 武汉锐科光纤激光技术股份有限公司 | Feedback optical isolator for high power all-fiber laser |
| CN114779503A (en) * | 2022-03-28 | 2022-07-22 | 安徽科瑞思创晶体材料有限责任公司 | TGG optic fibre laser isolator |
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Address after: 518104, Guangdong, Shenzhen, Baoan District manhole, South Ring Road and a community third industrial zone, Ming Industrial Park, the first third West Applicant after: MAXPHOTONICS Co.,Ltd. Address before: 518104, Guangdong, Shenzhen, Baoan District manhole, South Ring Road and a community third industrial zone, Ming Industrial Park, the first third West Applicant before: Maxphotonics Co., Ltd. |
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