CN203551838U - Kilowatt high isolation on-line optical isolator - Google Patents
Kilowatt high isolation on-line optical isolator Download PDFInfo
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- CN203551838U CN203551838U CN201320643062.5U CN201320643062U CN203551838U CN 203551838 U CN203551838 U CN 203551838U CN 201320643062 U CN201320643062 U CN 201320643062U CN 203551838 U CN203551838 U CN 203551838U
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- polarization beam
- beam apparatus
- polarization
- optoisolator
- wave plate
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Abstract
The utility model discloses a kilowatt high isolation on-line optical isolator comprising a die peeling device a, a collimator b, a faraday rotator a, a 1/2 wave plate a, a faraday rotator b, a 1/2 wave plate b, a collimator b, and a die peeling device b, which are sequentially arranged along an incident optical axis of a positive light. A polarization beam splitter a is disposed between the collimator a and the faraday rotator a. A polarization beam splitter b and a polarization beam splitter c are sequentially disposed between the 1/2 wave plate a and the faraday rotator b. A polarization beam splitter d is disposed between the 1/2 wave plate b and the collimator b. The optical isolator is also provided with a cooling sealing device, and the inner wall of the cooling sealing device disposed on the same side with the polarization beam splitter a and the polarization beam splitter b is provided with a diaphragm. Compared to the prior art, the optical isolator is can be used for a plurality of fields under the application conditions of the large power lasers, and is advantageous in that the working performance is stable, the inserting loss is small, the heat dissipation efficiency is high, and the isolation degree is high.
Description
Technical field
The utility model relates to a kind of optoisolator, especially a kind of multikilowatt high-isolation is at line style optoisolator, belong to high-end Laser Processing, cut, laser bonding, laser engraving and laser 3D print etc., the application of the high-end sciemtifec and technical sphere such as laser weapon, laser radar communication and laser sensing field.
Background technology
Along with scientific and technological progress and the development in epoch, laser is widely used gradually from a unreachable high-tech product communication, national defense industry, civilian industry and medical domain.Optoisolator is optical element indispensable in laser and optical-fibre communications field.In high-end high power laser application, high-power optoisolator is crucial core devices, for the normal operation of high power laser provides reliable guarantee.In the high-end laser applications such as high-end semiconductor laser, high-end image intensifer and high-end fiber laser system of processing, for the reflected light producing by face and the surface that processed from each fusion point, each optics by powerful reason, energy of reflection light is very responsive and fatal on the impact of system, backward transmission light may cause the performance of each optical device in optical system to worsen even damage, the lighter's laser instrument goes out photo-labile, and severe one is damaged laser instrument.The optoisolator power using is at present very little, and the isolation of optoisolator is very low, has restricted dramatically the development of the high-end fiber laser of multikilowatt.Therefore, develop a kind of optoisolator with the better high-isolation of job stability of higher-wattage extremely urgent.
Utility model content
The purpose of this utility model is to provide a kind of multikilowatt high-isolation at line style optoisolator, this optoisolator stable work in work, and have advantages of that insertion loss is little, radiating efficiency is high and isolation is high, can be used to well in the optical fields such as high-power pulsed laser.
The technical solution of the utility model: a kind of multikilowatt high-isolation is at line style optoisolator, along being provided with successively mode stripper a on forward light incident light axis, collimating apparatus a, Faraday polarization apparatus a, 1/2 wave plate a, Faraday polarization apparatus b, 1/2 wave plate b, collimating apparatus b and mode stripper b, on collimating apparatus a and collimating apparatus b, include optical fiber pigtail, end cap and lens, between collimating apparatus a and Faraday polarization apparatus a, be provided with polarization beam apparatus a, between 1/2 wave plate a and Faraday polarization apparatus b, be provided with successively polarization beam apparatus b and polarization beam apparatus c, between 1/2 wave plate b and collimating apparatus b, be provided with polarization beam apparatus d, mode stripper a, collimating apparatus a, polarization beam apparatus a, Faraday polarization apparatus a, 1/2 wave plate a, polarization beam apparatus b, polarization beam apparatus c, Faraday polarization apparatus b, 1/2 wave plate b, polarization beam apparatus d, collimating apparatus b is all located in cooling packaging system, the inwall of the cooling packaging system of polarization beam apparatus a and polarization beam apparatus c mono-side is provided with F:-5～0mm diaphragm.Wherein mode stripper a can divest from fibre core and drain to the harmful lights such as the laser of the higher order mode transmitting inner cladding, reduced the impact of harmful light on light propagation efficiency, the power that adopts the collimating apparatus of end cap and lens combination to carry is larger, diaphragm can be broken up backlight, reduce light intensity in unit area, also can improve the load power of collimating apparatus.
Aforesaid multikilowatt high-isolation is in line style optoisolator, polarization beam apparatus a, polarization beam apparatus b, polarization beam apparatus c and polarization beam apparatus d, by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal composition, are equipped with high-reflecting film on polarization beam apparatus a, polarization beam apparatus b, polarization beam apparatus c and polarization beam apparatus d.
Aforesaid multikilowatt high-isolation is in line style optoisolator, described polarization beam apparatus a is comprised of 2 triangle analyzing crystals and 1 parallelogram analyzing crystal, polarization beam apparatus b, polarization beam apparatus c and polarization beam apparatus d are by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal composition, polarization beam apparatus b, on polarization beam apparatus c and polarization beam apparatus d, be equipped with high-reflecting film, one side of the incident light of polarization beam apparatus a is provided with 45 degree reflective mirrors, in cooling packaging system, the inwall of the position corresponding with 45 degree reflective mirrors is provided with the diaphragm of F:-5～0mm.
Aforesaid multikilowatt high-isolation is in line style optoisolator, described polarization beam apparatus a is comprised of 4 triangle analyzing crystals, polarization beam apparatus b and polarization beam apparatus d are by 2 triangle analyzing crystals and 1 parallelogram analyzing crystal composition, polarization beam apparatus c is comprised of 1 triangle analyzing crystal and 1 parallelogram analyzing crystal, and polarization beam apparatus c is provided with high-reflecting film; One side of the incident light of polarization beam apparatus a is provided with 45 degree reflective mirrors, and in cooling packaging system, the inwall of the position corresponding with 45 degree reflective mirrors is provided with the diaphragm of F:-5～0mm.
Aforesaid multikilowatt high-isolation is in line style optoisolator, and high-reflecting film and optical axis included angle are 45 °.Analyzing crystal can be divided into the light that two bundles are vertical the nonpolarized light of incident, and wherein P light passes through completely, and S light is reflected with 45° angle, and exit direction becomes an angle of 90 degrees with P light; High-reflecting film can enter the reflection of S light in Faraday polarization apparatus a.
Aforesaid multikilowatt high-isolation, in line style optoisolator, is provided with diaphragm a between collimating apparatus a and polarization beam apparatus a, between polarization beam apparatus b and polarization beam apparatus c, is provided with diaphragm c, between polarization beam apparatus d and collimating apparatus b, is provided with diaphragm b.Forward light almost can can't harm and pass through, and backlight can be blocked by diaphragm or reflect, and only has the backlight of minute quantity to pass through.
Aforesaid multikilowatt high-isolation is in line style optoisolator, described cooling packaging system comprises housing, cooling chamber, heat eliminating medium entrance and heat eliminating medium outlet, wherein one end of described housing is provided with heat eliminating medium entrance and heat eliminating medium outlet, heat eliminating medium entrance is located at the below of housing, the top of housing is located in heat eliminating medium outlet, it between the outer wall of housing and inwall, is hollow structure, outlet is connected with this hollow structure described heat eliminating medium entrance with heat eliminating medium, cooling chamber is arranged on the two ends in housing, cooling chamber is communicated with hollow structure, mode stripper a and mode stripper b are all located in cooling chamber.
Aforesaid multikilowatt high-isolation, in line style optoisolator, is provided with heat eliminating medium in cooling packaging system, and heat eliminating medium can adopt water or oil.
Aforesaid multikilowatt high-isolation in line style optoisolator, optical fiber pigtail and the welding of end cap phase.
Compared with conventional art, the utility model can provide a kind of multikilowatt high-isolation at line style optoisolator, the stable work in work of this optoisolator, and have advantages of that insertion loss is little, radiating efficiency is high and isolation is high, can be applicable in the optical fields such as multikilowatt high-power pulsed laser, the optoisolator of described multikilowatt refers to that rated power is more than 1000 watts.
By adopting bipolar design fully to realize the high-isolation of optoisolator.
By cooling device is set, make heat eliminating medium directly hold directly and contact with optical device heat, greatly improved radiating effect, thereby improved the stability of optoisolator, make it under long high power work state, still can keep stable duty.
By mode stripper is set, can divest from fibre core and drain to the harmful lights such as the laser of the higher order mode transmitting inner cladding, reduced the impact of harmful light on light propagation efficiency.The power that adopts the collimating apparatus of end cap and lens combination to carry is larger, and these improvements are all that the utility model can be applicable to a kilowatt key for above high-power pulsed laser.
By diaphragm is set, backlight can be broken up, reduce light intensity in unit area, effectively prevent that backlight from damaging cooling packaging system.
Accompanying drawing explanation
Fig. 1, Fig. 3 and Fig. 5 are the index paths that forward light enters optoisolator;
Fig. 2, Fig. 4 and Fig. 6 are the index paths that backlight enters optoisolator.
Being labeled as in accompanying drawing: 1-diaphragm a, 2-optical fiber pigtail, 3-collimating apparatus a, 4-polarization beam apparatus a, 5-Faraday polarization apparatus a, 6-1/2 wave plate a, 7-polarization beam apparatus b, 8-high-reflecting film, 9-polarization beam apparatus d, 10-collimating apparatus b, 11-45 degree reflective mirror, the cooling packaging system of 12-, 13-diaphragm, 14-mode stripper a, 15-end cap, 16-lens, 17-diaphragm b, 20-housing, 21-cooling chamber, 22-heat eliminating medium entrance, the outlet of 23-heat eliminating medium, 24-mode stripper b, 25-diaphragm c, 26-polarization beam apparatus c, 27-Faraday polarization apparatus b, 28-1/2 wave plate b.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described.
Principle of work of the present utility model: forward light enters mode stripper a14 from optical fiber pigtail 2, through collimating apparatus a3, enter in polarization beam apparatus a4 again, under analyzing crystal effect in polarization beam apparatus a4, light is divided into P light and S light, wherein P light enters in Faraday polarization apparatus a5 through analyzing crystal, S light is reflexed on high-reflecting film 8 by analyzing crystal, and S light is reflected and enters in Faraday polarization apparatus a5 under the effect of high-reflecting film 8.Both separate rapidly certain angle transmission and enter the Faraday polarization apparatus a5 of 45 °.By Faraday polarization apparatus a, the vibration plane of P light and S light separately to same direction rotation 45 °.Postrotational P light and S light, after 1/2 wave plate a6, have all changed 45 ° to same direction again.P light now and S light enter in polarization beam apparatus b7, under the effect of polarization beam apparatus b7, by P light and S light compositing light beam, synthetic light beam enters polarization beam apparatus c26, polarization beam apparatus c26 is divided into light P light and S light again, P light and S light enter polarization beam apparatus d9 through Faraday polarization apparatus b27 and 1/2 wave plate b28, and polarization beam apparatus d9 again synthesizes Ray Of Light by two-beam line and spread out of by optical fiber pigtail 2 through collimating apparatus b10 and mode stripper b24, has realized the forward transmission of light.
Backlight enters collimating apparatus b10 by optical fiber pigtail 2, then is entered after polarization beam apparatus b7 by collimating apparatus b10, and light is divided into P light and S light, and P light and S light are through the effect of 1/2 wave plate a6, and its vibration plane has changed 45 ° to same direction again separately.Due to the nonreciprocity of Faraday effect, P light and S light are by after Faraday polarization apparatus b27, and polarization direction is still to 45 ° of same direction rotations, and original like this P light and S light are entering polarization beam apparatus c26.P light and S light are incited somebody to action wherein light beam and are reflexed to diaphragm 13 under polarization beam apparatus c26 effect, and diaphragm disperses light and the Absorption of Medium that is cooled.Another Ray Of Light enters polarization beam apparatus b7, light is again divided into P light and S light in polarization beam apparatus b7, P light and S light enter polarization beam apparatus a4 through 1/2 wave plate a6 and Faraday polarization apparatus a5, under polarization beam apparatus a4 effect, light is caused on diaphragm 13, diaphragm disperses light and the Absorption of Medium that is cooled again, discharges the energy of light.Almost do not have light to enter in collimating apparatus a3, thereby reached the object of reverse high isolation.
Wherein in cooling packaging system 12, be provided with heat eliminating medium, can, by the heat absorption of optoisolator generation, have improved the working environment of optoisolator, make optoisolator working stability, higher to the isolation of light.
Claims (9)
1. multikilowatt high-isolation, at a line style optoisolator, is characterized in that: along being provided with successively mode stripper a(14 on forward light incident light axis), collimating apparatus a(3), Faraday polarization apparatus a(5), 1/2 wave plate a(6), Faraday polarization apparatus b(27), 1/2 wave plate b(28), collimating apparatus b(10) and mode stripper b(24), collimating apparatus a(3) and collimating apparatus b(10) on include optical fiber pigtail (2), end cap (15) and lens (16), collimating apparatus a(3) and Faraday polarization apparatus a(5) between be provided with polarization beam apparatus a(4), 1/2 wave plate a(6) and Faraday polarization apparatus b(27) between be provided with successively polarization beam apparatus b(7) and polarization beam apparatus c(26), 1/2 wave plate b(28) and collimating apparatus b(10) between be provided with polarization beam apparatus d(9), mode stripper a(14), collimating apparatus a(3), polarization beam apparatus a(4), Faraday polarization apparatus a(5), 1/2 wave plate a(6), polarization beam apparatus b(7), polarization beam apparatus c(26), Faraday polarization apparatus b(27), 1/2 wave plate b(28), polarization beam apparatus d(9), collimating apparatus b(10) be all located in cooling packaging system (12) polarization beam apparatus a(4) and polarization beam apparatus c(26) inwall of cooling packaging system (12) of a side is provided with diaphragm (13).
2. multikilowatt high-isolation according to claim 1 is at line style optoisolator, it is characterized in that: described polarization beam apparatus a(4), polarization beam apparatus b(7), polarization beam apparatus c(26) and polarization beam apparatus d(9) by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal composition, polarization beam apparatus a(4), polarization beam apparatus b(7), polarization beam apparatus c(26) and polarization beam apparatus d(9) on be equipped with high-reflecting film (8).
3. multikilowatt high-isolation according to claim 1 is at line style optoisolator, it is characterized in that: described polarization beam apparatus a(4) by 2 triangle analyzing crystals and 1 parallelogram analyzing crystal, formed, polarization beam apparatus b(7), polarization beam apparatus c(26) and polarization beam apparatus d(9) by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal composition, polarization beam apparatus b(7), polarization beam apparatus c(26) and polarization beam apparatus d(9) on be equipped with high-reflecting film (8), polarization beam apparatus a(4) a side of incident light be provided with 45 degree reflective mirrors (11), in cooling packaging system (12), the inwall of the position corresponding with 45 degree reflective mirrors (11) is provided with the diaphragm (13) of F:-5～0mm.
4. multikilowatt high-isolation according to claim 1 is at line style optoisolator, it is characterized in that: described polarization beam apparatus a(4) by 4 triangle analyzing crystals, formed, polarization beam apparatus b(7) and polarization beam apparatus d(9) by 2 triangle analyzing crystals and 1 parallelogram analyzing crystal composition, polarization beam apparatus c(26) by 1 triangle analyzing crystal and 1 parallelogram analyzing crystal, formed polarization beam apparatus c(26) be provided with high-reflecting film (8); Polarization beam apparatus a(4) a side of incident light be provided with 45 degree reflective mirrors (11), in cooling packaging system (12), be provided with the diaphragm (13) of F:-5～0mm with 45 inwalls of spending the corresponding position of reflective mirrors (11).
According to the multikilowatt high-isolation described in claim 2 or 3 or 4 at line style optoisolator, it is characterized in that: high-reflecting film (8) and optical axis included angle are 45 °.
6. multikilowatt high-isolation according to claim 1 is at line style optoisolator, it is characterized in that: collimating apparatus a(3) and polarization beam apparatus a(4) between be provided with diaphragm a(1), polarization beam apparatus b(7) and polarization beam apparatus c(26) between be provided with diaphragm c(25), polarization beam apparatus d(9) and collimating apparatus b(10) between be provided with diaphragm b(17).
7. multikilowatt high-isolation according to claim 1 is at line style optoisolator, it is characterized in that: described cooling packaging system (12) comprises housing (20), cooling chamber (21), heat eliminating medium entrance (22) and heat eliminating medium outlet (23), wherein one end of described housing (20) is provided with heat eliminating medium entrance (22) and heat eliminating medium outlet (23), heat eliminating medium entrance (22) is located at the below of housing (20), the top of housing (20) is located in heat eliminating medium outlet (23), between the outer wall of housing (20) and inwall, it is hollow structure, described heat eliminating medium entrance (22) is connected with this hollow structure with heat eliminating medium outlet (23), cooling chamber (21) is arranged on the two ends in housing (20), cooling chamber (21) is communicated with hollow structure, mode stripper a(14) and mode stripper b(24) be all located in cooling chamber (21).
8. multikilowatt high-isolation according to claim 1, at line style optoisolator, is characterized in that: cooling packaging system is provided with heat eliminating medium in (12).
9. multikilowatt high-isolation according to claim 1, at line style optoisolator, is characterized in that: optical fiber pigtail (2) and end cap (15) phase welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643062.5U CN203551838U (en) | 2013-10-17 | 2013-10-17 | Kilowatt high isolation on-line optical isolator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320643062.5U CN203551838U (en) | 2013-10-17 | 2013-10-17 | Kilowatt high isolation on-line optical isolator |
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| Publication Number | Publication Date |
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| CN203551838U true CN203551838U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320643062.5U Withdrawn - After Issue CN203551838U (en) | 2013-10-17 | 2013-10-17 | Kilowatt high isolation on-line optical isolator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605184A (en) * | 2013-10-17 | 2014-02-26 | 深圳市创鑫激光技术有限公司 | Kilowatt-level high-isolation online optical isolator |
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2013
- 2013-10-17 CN CN201320643062.5U patent/CN203551838U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103605184A (en) * | 2013-10-17 | 2014-02-26 | 深圳市创鑫激光技术有限公司 | Kilowatt-level high-isolation online optical isolator |
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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 |