CN103543493A - Optical fiber isolator and optical fiber laser device - Google Patents
Optical fiber isolator and optical fiber laser device Download PDFInfo
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- CN103543493A CN103543493A CN201310522083.6A CN201310522083A CN103543493A CN 103543493 A CN103543493 A CN 103543493A CN 201310522083 A CN201310522083 A CN 201310522083A CN 103543493 A CN103543493 A CN 103543493A
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- collimator assembly
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Abstract
The invention relates to the technical field of isolators, and provides an optical fiber isolator and an optical fiber laser device. The optical fiber isolator comprises a first collimator assembly, a second collimator assembly and an isolation assembly between the first collimator assembly and the second collimator assembly, wherein the inside of the isolation assembly is provided with a first light splitting unit and a second light splitting unit, and the first light splitting unit and the second light splitting unit are used for preventing backlight from entering the first collimator assembly, so that gradient distribution of the temperature in the first collimator assembly is improved, heat in the first collimator assembly is timely dissipated, and accordingly the power that the isolator can bear is improved. The optical fiber isolator is wide in application and especially can be used for the optical fiber laser device.
Description
Technical field
The invention belongs to isolator technical field, relate in particular to a kind of fibre optic isolater and fiber laser.
Background technology
The features such as laser has high brightness, and collimation is good, and energy density is large.High-octane laser is applied in the Precision Machining of Metal Cutting, mark, medicine equipment widely.High-capacity optical fiber laser presents wide application prospect and huge technical advantage at aspects such as High rate and large capacity division multiplex fibre-optic communication wave system, high-precision optical fiber sensing technology and high power lasers.And in fiber laser, realizing the isolation of backlight is to determine one of key of the spectrum output power stability of fiber laser.Isolator be exactly so a kind of allow forward light to pass through, and backlight is isolated, can also bear the nonreciprocal optical passive component of certain power simultaneously.Yet the power that existing fiber isolator can carry is low, limits its application.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of fibre optic isolater, is intended to solve the low problem of power that existing fiber isolator can carry.
The embodiment of the present invention is to realize like this, a kind of fibre optic isolater, comprise first collimator assembly, the second collimator assembly and the barrier assembly between described first collimator assembly and the second collimator assembly, in described barrier assembly, be provided with the first spectrophotometric unit and the second spectrophotometric unit that stop backlight to enter first collimator assembly.
Another object of the embodiment of the present invention is to provide a kind of fiber laser with above-mentioned fibre optic isolater.
The embodiment of the present invention is established for stoping backlight to enter the first spectrophotometric unit and second spectrophotometric unit of first collimator assembly in fibre optic isolater, to improve the temperature gradient distribution in first collimator assembly, contribute to the heat in first collimator to shed in time, thereby improve the power that isolator can carry, make the application of this fibre optic isolater more extensive, especially can be used for fiber laser.
Accompanying drawing explanation
Fig. 1 is the structural representation of the fibre optic isolater that provides of the embodiment of the present invention;
Fig. 2 is the structural representation of the first spectrophotometric unit;
Fig. 3 is the forward of fibre optic isolater shown in Fig. 1 fundamental diagram of logical light time;
Fig. 4 is that fibre optic isolater shown in Fig. 1 oppositely leads to the fundamental diagram of light time.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
The embodiment of the present invention is established for stoping backlight to enter the first spectrophotometric unit and second spectrophotometric unit of first collimator assembly in fibre optic isolater, to improve the temperature gradient distribution in first collimator assembly, contribute to the heat in first collimator to shed in time, thereby improve the power that isolator can carry.
Below in conjunction with specific embodiment, realization of the present invention is described in detail.
As shown in Fig. 1～4, the fibre optic isolater that the embodiment of the present invention provides comprises first collimator assembly, the second collimator assembly and the barrier assembly between described first collimator assembly and the second collimator assembly.In described barrier assembly, be provided with the first spectrophotometric unit and the second spectrophotometric unit that stop backlight to enter first collimator assembly, so improved the temperature gradient distribution in first collimator assembly, contribute to the heat in first collimator to shed in time, thereby improve the power that this fibre optic isolater can carry.
The logical e light of the first spectrophotometric unit 114 described in the embodiment of the present invention, anti-o light, the logical o light of described the second spectrophotometric unit 106, anti-e light.Particularly, the first wedge 121 and the second wedge 122 that described the first spectrophotometric unit 114 is right-angle triangle by two cross sections form, described the first wedge is or/and the inclined-plane of the second wedge is coated with the blooming 123 of logical e light, anti-o light, the first spectrophotometric unit 114 that is rectangle by the first wedge and the second wedge optical cement or formation xsect glued together through described inclined-plane, as shown in Figure 2.Similarly, the 3rd wedge and the 4th wedge that described the second spectrophotometric unit 106 is right-angle triangle by two cross sections form, different is, described the 3rd wedge is or/and the inclined-plane of the 4th wedge is coated with the blooming of logical o light, anti-e light, the second spectrophotometric unit that is rectangle by the 3rd wedge and the 4th wedge optical cement or formation xsect glued together through described inclined-plane.
Conventionally, described the first spectrophotometric unit 114 and the upper and lower setting of the second spectrophotometric unit 106, exiting surface that both abutted against together and be attached at the first polarization shift unit 105 has formed the spectrophotometric unit that xsect is rectangle.Described the first polarization shift unit 105, the first spectrophotometric unit 114, the second spectrophotometric unit 106, optically-active unit 107 and the second polarization shift unit 108 are placed in herein by magnet 116 around metal sleeve 115 in.Wherein, described the first polarization shift unit 105, the first spectrophotometric unit 114, the second spectrophotometric unit 106, optically-active unit 107 and the second polarization shift unit 108 glued joint in metal sleeve 115 via side separately respectively.Aforementioned magnet 116 is outer is provided with the 3rd mechanical parts 119 coordinating with metal sleeve 115, and described the first polarization shift unit 105, the first spectrophotometric unit 114, the second spectrophotometric unit 106, optically-active unit 107, the second polarization shift unit 108, metal sleeve 115, magnet 116 and the 3rd mechanical parts 119 have formed barrier assembly.
Usually, described first collimator assembly comprises the first mechanical parts 118, is placed in the first outer tube 102 in described the first mechanical parts 118, is placed in the first inner sleeve 103 and the first diaphragm 117 in described the first outer tube 102 and is placed in the first single fiber head 101 and the first collimation lens 104 in described the first inner sleeve 103.Described the second collimator assembly comprises the second mechanical parts 120, be placed in the second outer tube 109 in described the second mechanical parts 120, be placed in the second inner sleeve 110 and the second diaphragm 113 in described the second outer tube 109 and be placed in the second single fiber head 111 and the second collimation lens 112 in described the second inner sleeve 110.Now on fixture, debug the position of described first collimator assembly, barrier assembly, the second collimator assembly, make described fibre optic isolater forward light Insertion Loss IL < 1.2dB, isolation ISO > 30dB.Certainly, described fibre optic isolater forward light Insertion Loss is the smaller the better, and isolation is the bigger the better.Debugging, to after meeting the requirements, is welded in the end of described the first mechanical parts 118 end of metal sleeve 115, and the end of described the second mechanical parts 120 is welded in the end of the 3rd mechanical parts 119.
In addition, described the first collimation lens 104 and the second collimation lens 112 can be Grin-Lens (GRIN Lens), D-Lens (bitoric lens), C-Lens(C lens) or the optical lens such as non-spherical lens.Described glue can be the curing glue such as heat-curable glue, ultra-violet curing glue and two curing glue.
For the function that how to realize this fibre optic isolater is described better, the logical light of forward is described respectively below and oppositely leads to the light time, light is in the polarization situation in each stage.
As shown in Figure 3, this fibre optic isolater forward leads to the light time, from the light of first collimator assembly outgoing, through the first polarization shift unit 105, be divided into the different e light in position and o light, this e light and o light are projected to respectively the first spectrophotometric unit 114 and the second spectrophotometric unit 106, due to the logical anti-o light of e light of the first spectrophotometric unit 114, the logical anti-e light of o light of the second spectrophotometric unit 106, so this e light and o light all can normally pass through spectrophotometric unit, described spectrophotometric unit does not affect the logical light of forward.Then, this e light and o light enter optically-active unit 107, and through optically-active unit, 107 adjust, and this e light and o polarisation of light direction have been rotated respectively 90 °, and now o light becomes e light, and e light becomes o light.O light now and e light enter the second polarization shift unit 108, and they converge and enter the second collimator assembly in the second polarization shift unit 108, have realized the logical light of forward of isolator.
As shown in Figure 4, this fibre optic isolater is the logical light time oppositely, from the light of the second collimator assembly outgoing, through the second polarization shift unit 108, be divided into the different o light in position and e light, this o light and e light enter optically-active unit 107, due to the nonreciprocity setting of optically-active unit 107, by the rear o light in optically-active unit 107 and e polarisation of light state, do not change.Now o light is projected to the first spectrophotometric unit 114, and e light is projected to the second spectrophotometric unit 106.Due to the logical anti-o light of e light of the first spectrophotometric unit 114, the logical anti-e light of o light of the second spectrophotometric unit 106.Therefore, oppositely logical light time o light and e light are reflected respectively and enter in metal sleeve 115, and do not enter in first collimator assembly, have realized the isolation to oppositely logical light.
As from the foregoing, this fibre optic isolater forward leads to the light time, light is in the collimating apparatus of two ends, all in fiber cores, transmit, the heat that high-power light (if wavelength is the laser that 1064nm, power are 100W) is produced therein has successively formed orderly thermograde by caudal cilium tubule between the first inner sleeve 103, the first outer tube 102 and the first mechanical parts 118, be that temperature sequentially reduces from the inside to the outside, heat can be distributed well, guarantee the normal operation of logical light time of this isolator forward.The oppositely logical light time, e light and o light are reflected respectively and enter in metal sleeve 115.Metal sleeve 115 is connected with exterior mechanical part 118,119,120, and area of dissipation increases, rapid heat dissipation.The heat that light produces on the first single fiber head 101 still can be between the first inner sleeve 103, the first outer tube 102 and the first mechanical parts 118 formation temperature gradient, heat can shed in an orderly manner, make the kapillary place temperature of the first single fiber head 101 remain on 50 ℃ of left and right, isolator can normally be worked.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a fibre optic isolater, comprise first collimator assembly, the second collimator assembly and the barrier assembly between described first collimator assembly and the second collimator assembly, it is characterized in that, in described barrier assembly, be provided with the first spectrophotometric unit and the second spectrophotometric unit that stop backlight to enter first collimator assembly.
2. fibre optic isolater as claimed in claim 1, is characterized in that, described the first spectrophotometric unit leads to e light, anti-o light, and described the second spectrophotometric unit leads to o light, anti-e light.
3. fibre optic isolater as claimed in claim 2, it is characterized in that, the first wedge that described the first spectrophotometric unit is right-angle triangle by two cross sections and the second wedge form through its inclined-plane optical cement or gummed, and described the first wedge is or/and the inclined-plane of the second wedge is coated with the blooming of logical e light, anti-o light; The 3rd wedge and the 4th wedge that described the second spectrophotometric unit is right-angle triangle by two cross sections form through its inclined-plane optical cement or gummed, and described the first wedge is or/and the inclined-plane of the second wedge is coated with the blooming of logical o light, anti-e light.
4. the fibre optic isolater as described in any one in claim 1～3, is characterized in that, described the first spectrophotometric unit and the upper and lower setting of the second spectrophotometric unit are all attached at the exiting surface of the first polarization shift unit.
5. fibre optic isolater as claimed in claim 4, is characterized in that, described the first polarization shift unit, the first spectrophotometric unit, the second spectrophotometric unit, optically-active unit and the second polarization shift unit be placed in by magnet ring around metal sleeve in.
6. fibre optic isolater as claimed in claim 5, it is characterized in that, described magnet is provided with the 3rd mechanical parts coordinating with metal sleeve outward, and described the first polarization shift unit, the first spectrophotometric unit, the second spectrophotometric unit, optically-active unit, the second polarization shift unit, metal sleeve, magnet and the 3rd mechanical parts have formed barrier assembly.
7. the fibre optic isolater as described in claim 5 or 6, it is characterized in that, described first collimator assembly comprises the first mechanical parts, be placed in the first outer tube in described the first mechanical parts, be placed in the first inner sleeve and the first diaphragm in described the first outer tube and be placed in the first single fiber head and the first collimation lens in described the first inner sleeve.
8. fibre optic isolater as claimed in claim 7, it is characterized in that, described the second collimator assembly comprises the second mechanical parts, be placed in the second outer tube in described the second mechanical parts, be placed in the second inner sleeve and the second diaphragm in described the second outer tube and be placed in the second single fiber head and the second collimation lens in described the second inner sleeve.
9. fibre optic isolater as claimed in claim 8, it is characterized in that, on fixture, debug the position of described first collimator assembly, barrier assembly, the second collimator assembly, make described fibre optic isolater forward light Insertion Loss IL < 1.2dB, isolation ISO > 30dB, and the end of described the first mechanical parts being welded in to the end of metal sleeve, the end of described the second mechanical parts is welded in the end of the 3rd mechanical parts.
10. a fiber laser with the fibre optic isolater as described in any one in claim 1～9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310522083.6A CN103543493B (en) | 2013-10-29 | 2013-10-29 | A kind of fibre optic isolater and optical fiber laser |
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| CN201310522083.6A CN103543493B (en) | 2013-10-29 | 2013-10-29 | A kind of fibre optic isolater and optical fiber laser |
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| CN103543493B CN103543493B (en) | 2016-05-11 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142535A (en) * | 2014-08-26 | 2014-11-12 | 鞍山创鑫激光技术有限公司 | Liquid-cooled hectowatt-level multimode-fiber online opto-isolator |
| CN105807371A (en) * | 2014-12-30 | 2016-07-27 | 福州高意通讯有限公司 | High power 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 |
| CN111123432A (en) * | 2018-10-30 | 2020-05-08 | 慧与发展有限责任合伙企业 | Polarization-splitting optical interface assembly, optical connector and coupling method |
| CN112014928A (en) * | 2019-05-31 | 2020-12-01 | 珠海保税区光联通讯技术有限公司 | Optical fiber ferrule adapter |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05224153A (en) * | 1992-02-17 | 1993-09-03 | Chichibu Cement Co Ltd | Optical isolator |
| CN101666920A (en) * | 2009-09-21 | 2010-03-10 | 深圳朗光科技有限公司 | Optoisolator |
| US20110069387A1 (en) * | 2009-09-24 | 2011-03-24 | Smm Precision Co., Ltd. | In-line optical isolator |
| CN102360131A (en) * | 2011-09-29 | 2012-02-22 | 中国科学院上海光学精密机械研究所 | Multifunctional high-power polarization preserving fiber isolator |
| CN103217815A (en) * | 2013-03-07 | 2013-07-24 | 深圳朗光科技有限公司 | Opto-isolator |
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2013
- 2013-10-29 CN CN201310522083.6A patent/CN103543493B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05224153A (en) * | 1992-02-17 | 1993-09-03 | Chichibu Cement Co Ltd | Optical isolator |
| CN101666920A (en) * | 2009-09-21 | 2010-03-10 | 深圳朗光科技有限公司 | Optoisolator |
| US20110069387A1 (en) * | 2009-09-24 | 2011-03-24 | Smm Precision Co., Ltd. | In-line optical isolator |
| CN102360131A (en) * | 2011-09-29 | 2012-02-22 | 中国科学院上海光学精密机械研究所 | Multifunctional high-power polarization preserving fiber isolator |
| CN103217815A (en) * | 2013-03-07 | 2013-07-24 | 深圳朗光科技有限公司 | Opto-isolator |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104142535A (en) * | 2014-08-26 | 2014-11-12 | 鞍山创鑫激光技术有限公司 | Liquid-cooled hectowatt-level multimode-fiber online opto-isolator |
| CN105807371A (en) * | 2014-12-30 | 2016-07-27 | 福州高意通讯有限公司 | High power 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 |
| CN111123432A (en) * | 2018-10-30 | 2020-05-08 | 慧与发展有限责任合伙企业 | Polarization-splitting optical interface assembly, optical connector and coupling method |
| CN112014928A (en) * | 2019-05-31 | 2020-12-01 | 珠海保税区光联通讯技术有限公司 | Optical fiber ferrule adapter |
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| CN103543493B (en) | 2016-05-11 |
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