CN203551835U - Hundred-watt level collimation type isolator - Google Patents
Hundred-watt level collimation type isolator Download PDFInfo
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- CN203551835U CN203551835U CN201320589394.XU CN201320589394U CN203551835U CN 203551835 U CN203551835 U CN 203551835U CN 201320589394 U CN201320589394 U CN 201320589394U CN 203551835 U CN203551835 U CN 203551835U
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- optical fiber
- collimation
- housing
- isolator
- birefringece crystal
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Abstract
The utility model discloses a hundred-watt level collimation type isolator which comprises a mode stripper (1), an optical fiber collimator (2), an isolator chipware (3) and a beam expanding lens (4) which are sequentially disposed along a forward direction light incident optical axis, wherein the mode stripper (1) is connected with the optical fiber collimator (2) through an optical fiber (10); two symmetrically arranged mirrors (5) are disposed between the optical fiber collimator (2) and the isolator chipware (3); and the mode stripper (1), the optical fiber collimator (2), the isolator chipware (3), the beam expanding lens (4) and the mirrors (5) are all disposed in a water cooling package apparatus (1). The hundred-watt level collimation type isolator has the advantages of high isolation degree, good heat radiation effect and stable work performance, and can be applied to high-power pulse lasers.
Description
Technical field
The utility model relates to a kind of isolator, and particularly a kind of hectowatt grade collimation-type isolator, belongs to laser field.
Background technology
Optoisolator be only allow light along a direction by and in contrary direction, stop the optical passive component that light passes through.Semiconductor laser, image intensifer and fiber laser etc. are for very responsive from the reflected light of connector, fusion point, wave filter etc., and may cause performance can worsen even damaging, 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 is conventionally used in and in light path, 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 is at present some low power optoisolators, often between several watts to tens watts.Because when it come to tend to because technical reason, easily occur the phenomenons such as insertion loss is large, radiating effect is bad 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, the domestic optoisolator that also does not occur being used for 100W high-power pulsed laser.
Utility model content
The purpose of this utility model is, a kind of hectowatt grade collimation-type isolator is provided, and it has advantages of high-isolation, good heat dissipation effect and stable work in work, can be used in high-power pulsed laser.
The technical solution of the utility model: a kind of hectowatt grade collimation-type isolator, comprise along the mode stripper setting 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 are all arranged in 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 transmitting inner cladding from fibre core.Owing to having adopted 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 °.Between described 2 catoptrons, form a very little gap, 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 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 setting gradually on forward light incident light axis, Faraday polarization apparatus, 1/2 wave plate and the second birefringece crystal.1/2 described 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 good material of other reflective function to make.
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 the negative lens and the positive lens that along on forward light incident light axis, set gradually; Between described negative lens and the second birefringece crystal, be provided with diaphragm.
In aforesaid hectowatt grade collimation-type isolator, described 1/2 wave plate passes through 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 YVO4 crystal.
In aforesaid hectowatt grade collimation-type isolator, described water-cooled packaging system comprises housing, waterway, water inlet and water delivering orifice, wherein one 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, is hollow structure between the outer wall of housing and inwall, 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, structure of the present utility model adopts more than can be increased to 100W by power, by adopting water-cooled packaging system, effectively improved radiating effect, thereby improved the stability of optoisolator, make it under long high power work state, still can keep stable work.
By on the inwall of housing, diaphragm being set, can be by the beam divergence reflecting 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, before inciding collimating apparatus, first shells light mould processing, divest harmful light, for example: remnant pump light, effectively protect collimating apparatus, can also divest the laser that drains to the higher order mode transmitting 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, more than the power that makes the utility model realize both forward and reverse directions 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.
Accompanying drawing explanation
Fig. 1 is the logical light schematic diagram of forward of the present utility model;
Fig. 2 is oppositely logical light schematic diagram of the present utility model;
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, 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, 13-first lens, 14-negative lens, 15-positive lens, 16-magnetic tube, 17-diaphragm, 18-end cap, 19-diaphragm, 20-housing, 21-waterway, 22-water inlet, 23-water delivering orifice.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, but not as the foundation of the utility model being done to any restriction.
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 setting gradually on forward light incident light axis and positive lens 15; Between described negative lens 14 and the second birefringece crystal 9, be provided with diaphragm 17.1/2 wave plate 8 passes through 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 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, wherein one 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, is hollow structure between the outer wall of housing 20 and inwall, 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.
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 setting gradually on forward light incident light axis and positive lens 15; Between described negative lens 14 and the second birefringece crystal 9, be provided with diaphragm 17.1/2 wave plate 8 passes through 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 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, wherein one 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, is hollow structure between the outer wall of housing 20 and inwall, 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.
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 setting gradually on forward light incident light axis and positive lens 15; Between described negative lens 14 and the second birefringece crystal 9, be provided with diaphragm 17.1/2 wave plate 8 passes through 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 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, wherein one 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, is hollow structure between the outer wall of housing 20 and inwall, 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 utility model: 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 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 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, 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 returning 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 is by after Faraday rotator 7, and polarization direction is still to 45 ° of same direction rotations, and original like this o light and e light have become e light and o light entering after the first birefringece crystal 6.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 respectively to be reflected away separately perpendicular to the direction of 90 °, optical axis, 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 being 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 producing in these two processes, through the circulation of water-cooled packaging system 11 interior water, takes out of rapidly, thereby has reached good radiating effect.
Claims (9)
1. a hectowatt grade collimation-type isolator, it is characterized in that: comprise along the mode stripper (1) setting 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) are all arranged in water-cooled packaging system (11).
2. hectowatt grade collimation-type isolator according to claim 1, 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, is characterized in that: described optical fiber collimator (2) comprises patch cord (12) and lens (13), and 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 the hectowatt grade collimation-type isolator described in claim 1 or 2 or 3, it is characterized in that: described isolator chipware (3) comprises along the first birefringece crystal (6) setting 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 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, is characterized in that: described beam expanding lens (4) comprises along the negative lens (14) setting gradually on forward light incident light axis and positive lens (15); Between described negative lens (14) and the second birefringece crystal (9), be provided with diaphragm (17).
7. hectowatt grade collimation-type isolator according to claim 4, is characterized in that: the first birefringece crystal (6) and the second birefringece crystal (9) all adopt 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), wherein one 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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589394.XU CN203551835U (en) | 2013-09-23 | 2013-09-23 | Hundred-watt level collimation type isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320589394.XU CN203551835U (en) | 2013-09-23 | 2013-09-23 | Hundred-watt level collimation type isolator |
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| Publication Number | Publication Date |
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| CN203551835U true CN203551835U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320589394.XU Withdrawn - After Issue CN203551835U (en) | 2013-09-23 | 2013-09-23 | Hundred-watt level collimation type isolator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499856A (en) * | 2013-09-23 | 2014-01-08 | 深圳市创鑫激光技术有限公司 | Hectowatt collimation type isolator |
| CN105259623A (en) * | 2015-10-30 | 2016-01-20 | 武汉电信器件有限公司 | Laser and grating coupler packaging structure and method |
| CN107238953A (en) * | 2017-06-30 | 2017-10-10 | 深圳市创鑫激光股份有限公司 | Fibre optic isolater and optical fiber laser |
-
2013
- 2013-09-23 CN CN201320589394.XU patent/CN203551835U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103499856A (en) * | 2013-09-23 | 2014-01-08 | 深圳市创鑫激光技术有限公司 | Hectowatt collimation type isolator |
| CN105259623A (en) * | 2015-10-30 | 2016-01-20 | 武汉电信器件有限公司 | Laser and grating coupler packaging structure and method |
| CN107238953A (en) * | 2017-06-30 | 2017-10-10 | 深圳市创鑫激光股份有限公司 | Fibre optic isolater and optical fiber laser |
| CN107238953B (en) * | 2017-06-30 | 2018-08-17 | 深圳市创鑫激光股份有限公司 | Fibre optic isolater and 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 |
Granted publication date: 20140416 Effective date of abandoning: 20150422 |