CN101794022B - Pluggable optical filter - Google Patents
Pluggable optical filter Download PDFInfo
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- CN101794022B CN101794022B CN2010101245370A CN201010124537A CN101794022B CN 101794022 B CN101794022 B CN 101794022B CN 2010101245370 A CN2010101245370 A CN 2010101245370A CN 201010124537 A CN201010124537 A CN 201010124537A CN 101794022 B CN101794022 B CN 101794022B
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- insertion core
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Abstract
The invention discloses a pluggable optical filter, which comprises a positive head front seat positioned on an incident light side and a negative head back seat spliced with the positive head front seat and positioned on an emergent light side, wherein a front seat passage passing through from front to back is formed axially in the positive head front seat; a limiting lug boss is formed on the incident light side positioned on the inner periphery of the front seat passage; a back seat passage passing through from front to back is formed axially in the negative head back seat; the inner diameter of the back seat passage is smaller than that of the front seat passage; the front seat passage and the back seat passage form a spliced integral passage after the positive head front seat is spliced with the negative head back seat; an optical filter chip component is arranged in the spliced integral passage; a spring is sleeved on the periphery of the optical filter chip component; the spring is blocked in the front seat passage; and a first ceramic sleeve is sleeved at one end of emergent light from the optical filter core component. The pluggable optical filter can completely overcome the defects of the prior art, can integrate a filtering function and a plug-and-play function to a miniaturized optical device, is simple to manufacture, has a low cost and reliable quality, and is convenient for an engineer to operate and mount.
Description
Technical field
The present invention relates to a kind of optical filter, particularly relate to a kind of pluggable optical filter.
Background technology
Along with the development of Fibre Optical Communication Technology, especially Optical Access Network FTTH and PON networks development, miniaturization, low-cost, online plug and play is the developing direction of optical device, more especially is used for FTTB, the optical device of CATV, the block device that for example is used for the CATV signal, during the FTTH circuit monitoring as the reflection terminal of OTDR signal etc., because consumption is very big, so to the consideration of cost, the convenience of fitting operation, just there has been higher requirement aspects such as volume miniaturization.
One mainly contains several shortcomings conventional deielectric-coating wave filter:
1, adopt the structure of optical fiber collimator, cost is higher;
2, conventional structure can only be done the magnetic tape trailer optical-fiber type, owing to need coiled optical fiber operation, engineering staff's troublesome poeration;
Even the tape adapter unit structure, because adapter and wave filter separate itself, being assembled together will be by optical fiber splicing together, and volume can be very big, is not suitable for the application of Access Network.
Summary of the invention
Technical matters to be solved by this invention is that a kind of LC type pluggable optical filter that can realize a filtering, less optical element, little, the online plug and play of device volume, miniaturization is provided.
The technical solution adopted in the present invention is: a kind of pluggable optical filter, include a sun front stall that is positioned at the incident light side and the moon that is positioned at emergent light side back seat of pegging graft with a sun front stall, the front foot corridor that the inner shaft of a described sun front stall connects before and after being formed with, be positioned at the incident light side in the described front foot corridor week and be formed with positive stop lug boss, the back seat passage that described the moon back seat inner shaft connects before and after being formed with, the internal diameter of described back seat passage is less than the internal diameter of front foot corridor, described front foot corridor forms the integral passage that docks with the back seat passage at a sun front stall and cloudy back seat grafting back, be provided with the optical filter chipware in the integral passage of described butt joint, the periphery of described optical filter chipware is with spring, described Spring Card is located in the front foot corridor, and an end of described optical filter chipware emergent light is with first ceramic sleeve.
Described optical filter chipware includes: inner shaft is to first ceramic insertion core that is inserted with first single-mode fiber, dock with first ceramic insertion core and inner shaft to second ceramic insertion core that is inserted with second single-mode fiber, butt end at first ceramic insertion core and second ceramic insertion core, described first single-mode fiber and second single-mode fiber are coupled, the periphery of the butt end of described first ceramic insertion core and second ceramic insertion core is with second ceramic sleeve, the periphery of described second ceramic sleeve is with the metal adapter sleeve, by the epoxy glue secure bond, the two ends of the described metal adapter sleeve and second ceramic sleeve are separately fixed on the outer peripheral face of first ceramic insertion core and second ceramic insertion core by epoxy glue between the described metal adapter sleeve and second ceramic sleeve.
Have the some glue hole that is used between this metal adapter sleeve and second ceramic sleeve, pouring into epoxy glue on the sidewall of described metal adapter sleeve.
The structure of described first ceramic insertion core and second ceramic insertion core is identical, all has following structure: be long clavate structure, termination periphery at long clavate two ends is formed with chamfering, inner shaft is to being formed with the through hole that runs through single-mode fiber, one end of wherein long clavate is positioned on the outer peripheral face of end and is formed with groove, is marked with epoxy glue in the described groove.
The end face structure that described first ceramic insertion core and second ceramic insertion core have an end of groove is UPC, the UPC end face of described first ceramic insertion core and second ceramic insertion core is by the butt joint of optical coating rete, the periphery of described this interface is formed with the V-type annular groove, and the described V-type annular groove and the second ceramic sleeve opening intersection are marked with ultraviolet glue.
Described optical coating rete is respectively formed on the end face of first ceramic insertion core and second ceramic insertion core.
Described optical coating rete is formed on the end face of first ceramic insertion core, or is formed on the end face of second ceramic insertion core.
The end face away from that end of groove of described first ceramic insertion core and second ceramic insertion core is the PC end face, or the UPC end face, or the APC end face.
A described sun front stall is used for being connected with LC type fiber adapter, and described the moon back seat is used for being connected with the LC type joints of optical fibre.
The described insertion on the fiber end face that first single-mode fiber in first ceramic insertion core and second ceramic insertion core and second single-mode fiber be coupled carried out optical coating.
Pluggable optical filter of the present invention can overcome the shortcoming of prior art fully, filter function, plug-and-play feature is integrated on the optical device of a miniaturization, make simple, with low cost, reliable in quality, the engineering staff operates easy for installation.
Description of drawings
Fig. 1 is an integral installation distribution structure synoptic diagram of the present invention;
Fig. 2 is an optical filter chipware one-piece construction synoptic diagram of the present invention;
Fig. 3 is the structural representation of ceramic insertion core of the present invention;
Fig. 4 is the principle of work of pluggable optical filter of the present invention.
Wherein:
1-1: a sun front stall 1-2: a cloudy back seat
1-3: optical filter chipware 1-4: spring
1-5: the first ceramic sleeve 1-6: front foot corridor
1-7: back seat passage 1-8: positive stop lug boss
2-1: the first ceramic insertion core 2-2: optical coating rete
2-3: the second ceramic sleeve 2-4: epoxy glue
2-5: metal adapter sleeve 2-6: some glue hole
2-7: the first single-mode fiber 2-8:V type annular groove
2-9: the second single-mode fiber 2-10: second ceramic insertion core
2-11: groove 2-12: through hole
Embodiment
Provide specific embodiment below in conjunction with accompanying drawing, further specify pluggable optical filter of the present invention and how to realize.
As shown in Figure 1, pluggable optical filter of the present invention includes a sun front stall 1-1 who is positioned at the incident light side and the moon that is positioned at the emergent light side back seat 1-2 that pegs graft with a sun front stall 1-1.The front foot corridor 1-6 that the inner shaft of a described sun front stall 1-1 connects before and after being formed with, be positioned at the incident light side week in the described front foot corridor 1-6 and be formed with positive stop lug boss 1-8, the back seat passage 1-7 that described the moon back seat 1-2 inner shaft connects before and after being formed with, the internal diameter of described back seat passage 1-7 is less than the internal diameter of front foot corridor 1-6, described front foot corridor 1-6 forms the integral passage that docks with back seat passage 1-7 at a sun front stall 1-1 and cloudy back seat 1-2 grafting back, be provided with optical filter chipware 1-3 in the integral passage of described butt joint, the periphery of described optical filter chipware 1-3 is with spring 1-4, described spring 1-4 is fastened in the 1-6 of front foot corridor, and an end of described optical filter chipware 1-3 emergent light is with the first ceramic sleeve 1-5.A described sun front stall 1-1 is used for being connected with LC type fiber adapter, and described the moon back seat 1-2 is used for being connected with the LC type joints of optical fibre.The pluggable optical filter of the miniaturization after the whole assembling, in the device use, a sun front stall 1-1 links to each other with LC type fiber adapter, and a cloudy back seat 1-2 links to each other with the LC type joints of optical fibre.Light signal can cooperate input optical signal with a sun front stall 1-1 through LC type adapter, also can cooperate input optical signal with a cloudy back seat 1-2 through the LC type joints of optical fibre.
Above-mentioned each parts, a sun front stall 1-1 and a cloudy back seat 1-2 are plastic material, spring 1-4 is a metal material.A described sun front stall 1-1 and a cloudy back seat 1-2 are the plastic outer part that satisfies connector, adapter standard interface size.
Described optical filter chipware 1-3 is the critical component of pluggable optical filter of the present invention, is used to realize the filter function of device input optical signal.Described spring 1-4 is for realizing the tight assembling between each chipware of device.The described first ceramic sleeve 1-5 is for realizing optical filter chipware 1-3 and cloudy back seat 1-2 coupling.
As shown in Figure 2, described optical filter chipware 1-3 includes: inner shaft is to the first ceramic insertion core 2-1 that is inserted with the first single-mode fiber 2-7, dock with the first ceramic insertion core 2-1 and inner shaft to the second ceramic insertion core 2-10 that is inserted with the second single-mode fiber 2-9, butt end at the first ceramic insertion core 2-1 and the second ceramic insertion core 2-10, the described first single-mode fiber 2-7 and the second single-mode fiber 2-9 are coupled, the periphery of the butt end of the described first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 is with the second ceramic sleeve 2-3, the described second ceramic sleeve 2-3 can realize the precision-fit of the first ceramic insertion core 2-1 and the second ceramic insertion core 2-10, reaches the high-efficiency transfer of light signal when the single-mode fiber end face is coupled.The periphery of the described second ceramic sleeve 2-3 is with metal adapter sleeve 2-5, pass through epoxy glue 2-4 secure bond between the described metal adapter sleeve 2-5 and the second ceramic sleeve 2-3, have the some glue hole 2-6 that is used for pouring into epoxy glue 2-4 between this metal adapter sleeve 2-5 and the second ceramic sleeve 2-3 on the sidewall of described metal adapter sleeve 2-5, glue can be conveniently put in the effect of some glue hole 2-6.The two ends of the described metal adapter sleeve 2-5 and the second ceramic sleeve 2-3 are separately fixed on the outer peripheral face of the first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 by epoxy glue 2-4.
The point adhesive curing is to carry out in heating process, can increase the flowability of epoxy glue 2-4 thus, makes epoxy glue 2-4 be full of the adapted space of the metal adapter sleeve 2-5 and the second ceramic sleeve 2-3, reaches the purpose of cure package.Solidify by epoxy glue 2-4 described metal adapter sleeve 2-5 and the described first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 and the second ceramic sleeve 2-3 are closely cooperated, and also realize simultaneously and the assembly structure requirement of a positive front stall 1-1 and spring 1-4.
The structure of the described first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 is identical, all has structure as shown in Figure 3: be long clavate structure, termination periphery at long clavate two ends is formed with chamfering, inner shaft is to being formed with the through hole 2-12 that runs through single-mode fiber, one end of wherein long clavate is positioned on the outer peripheral face of end and is formed with groove 2-11, be marked with epoxy glue 2-4 in the described groove 2-11, through strengthening the fastening force between the second ceramic sleeve 2-3 and the first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 behind the overcuring, increase the times of capable of being inserted and pulled out of device, thereby realize the first ceramic insertion core 2-1 and the bigger contact engaging and separating force of second ceramic insertion core 2-10 carrying.
The end face structure that the described first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 have the end of groove 2-11 is UPC, as shown in Figure 2, the UPC end face of the described first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 is by optical coating rete 2-2 butt joint, the periphery of described this interface is formed with V-type annular groove 2-8, and the described V-type annular groove 2-8 and the second ceramic sleeve 2-3 opening intersection are marked with ultraviolet glue.
The purpose that is marked with ultraviolet glue is to enter optical coating rete 2-2 for fear of epoxy glue 2-4, influence the rete technical indicator, be marked with ultraviolet glue 2-8 so be in contact with one another the intersection that the end face that docks forms the V-type annular groove 2-8 and the second ceramic sleeve 2-3 opening at the described first ceramic insertion core 2-1 and the second ceramic insertion core 2-10.
The coating process of optical coating rete 2-2 is: the first single-mode fiber 2-7 is carried out precuring in the first ceramic insertion core 2-1 after, this end surface grinding polishing to the first ceramic insertion core 2-1, end face structure is UPC, carry out the optics end face coating then, the interface of the first ceramic insertion core 2-1 and the second ceramic insertion core 2-10, A end face as shown in Figure 2 can be coated with optical coating rete 2-2 simultaneously, also can be coated with optical coating rete 2-2 by one of them end face.Its function is mainly the effective filtering that realizes light signal, reaches the purpose of optical signal filtering.
Be that described optical coating rete 2-2 is respectively formed on the end face of the first ceramic insertion core 2-1 and the second ceramic insertion core 2-10, or described optical coating rete 2-2 is formed on the end face of the first ceramic insertion core 2-1, or is formed on the end face of the second ceramic insertion core 2-10.
The end face away from that end of groove 2-11 of the described first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 passes through grinding and polishing, and end face can be the end face into PC, or the UPC end face, or the APC end face.
The described first single-mode fiber 2-7 and the second single-mode fiber 2-9 can realize the effective transmission of light signal in optical fiber, the first single-mode fiber 2-7 and the second single-mode fiber 2-9 are separately implemented at heat curing in the first ceramic insertion core 2-1 and the second ceramic insertion core 2-10 by using epoxy glue 2-4, through to behind the A end fiber end face grinding and polishing near the first ceramic insertion core 2-1 and the second ceramic insertion core 2-10, fiber end face is carried out optical coating.
As shown in Figure 4, the principle of work of pluggable optical filter of the present invention is specific as follows: behind the optical signal transmission path setting, with light signal λ
1, λ
2, λ
3... λ
nInput in the single-mode fiber 2-7, light signal transmits in the first single-mode fiber 2-7, and light signal is through the filter action of optical coating rete 2-2, when rete adopts λ
2By doing the time spent, corresponding output terminal light signal is λ
1, λ
3... λ
n, light signal λ
2Be cut off, reach the purpose of optical signal filtering.Through filtered light signal λ
1, λ
3... λ
nAfter the second single-mode fiber 2-9 of other end transmission, light signal is exported again.
Claims (10)
1. pluggable optical filter, it is characterized in that, include a sun front stall (1-1) that is positioned at the incident light side and the moon that is positioned at emergent light side back seat (1-2) of pegging graft with a sun front stall (1-1), the front foot corridor (1-6) that the inner shaft of a described sun front stall (1-1) connects before and after being formed with, interior week of described front foot corridor (1-6) is positioned at the incident light side and is formed with positive stop lug boss (1-8), the back seat passage (1-7) that described the moon back seat (1-2) inner shaft connects before and after being formed with, the internal diameter of described back seat passage (1-7) is less than the internal diameter of front foot corridor (1-6), described front foot corridor (1-6) forms the integral passage that docks with back seat passage (1-7) at a sun front stall (1-1) and a cloudy back seat (1-2) grafting back, be provided with optical filter chipware (1-3) in the integral passage of described butt joint, the periphery of described optical filter chipware (1-3) is with spring (1-4), described spring (1-4) is fastened in the front foot corridor (1-6), and an end of described optical filter chipware (1-3) emergent light is with first ceramic sleeve (1-5).
2. pluggable optical filter according to claim 1, it is characterized in that, described optical filter chipware (1-3) includes: inner shaft is to first ceramic insertion core (2-1) that is inserted with first single-mode fiber (2-7), dock with first ceramic insertion core (2-1) and inner shaft to second ceramic insertion core (2-10) that is inserted with second single-mode fiber (2-9), in the butt end of first ceramic insertion core (2-1) with second ceramic insertion core (2-10), described first single-mode fiber (2-7) is coupled with second single-mode fiber (2-9), described first ceramic insertion core (2-1) is with second ceramic sleeve (2-3) with the periphery of the butt end of second ceramic insertion core (2-10), the periphery of described second ceramic sleeve (2-3) is with metal adapter sleeve (2-5), by epoxy glue (2-4) secure bond, the two ends of described metal adapter sleeve (2-5) and second ceramic sleeve (2-3) are separately fixed on the outer peripheral face of first ceramic insertion core (2-1) and second ceramic insertion core (2-10) by epoxy glue (2-4) between described metal adapter sleeve (2-5) and second ceramic sleeve (2-3).
3. pluggable optical filter according to claim 2, it is characterized in that, have the some glue hole (2-6) that is used between this metal adapter sleeve (2-5) and second ceramic sleeve (2-3), pouring into epoxy glue (2-4) on the sidewall of described metal adapter sleeve (2-5).
4. pluggable optical filter according to claim 2, it is characterized in that, described first ceramic insertion core (2-1) is identical with the structure of second ceramic insertion core (2-10), all has following structure: be long clavate structure, termination periphery at long clavate two ends is formed with chamfering, inner shaft is to being formed with the through hole (2-12) that runs through single-mode fiber, and wherein an end of long clavate is positioned on the outer peripheral face of end and is formed with groove (2-11), is marked with epoxy glue (2-4) in the described groove (2-11).
5. pluggable optical filter according to claim 4, it is characterized in that, the end face structure that described first ceramic insertion core (2-1) and second ceramic insertion core (2-10) have an end of groove (2-11) is UPC, the UPC end face of described first ceramic insertion core (2-1) and second ceramic insertion core (2-10) is by optical coating rete (2-2) butt joint, the periphery of described this interface is formed with V-type annular groove (2-8), and described V-type annular groove (2-8) is marked with ultraviolet glue with the second ceramic sleeve 2-3 opening intersection.
6. pluggable optical filter according to claim 5 is characterized in that, described optical coating rete (2-2) is respectively formed on the end face of first ceramic insertion core (2-1) and second ceramic insertion core (2-10).
7. pluggable optical filter according to claim 5 is characterized in that, described optical coating rete (2-2) is formed on the end face of first ceramic insertion core (2-1), or is formed on the end face of second ceramic insertion core (2-10).
8. pluggable optical filter according to claim 5 is characterized in that, the end face away from that end of groove (2-11) of described first ceramic insertion core (2-1) and second ceramic insertion core (2-10) is the PC end face, or the UPC end face, or the APC end face.
9. pluggable optical filter according to claim 1 is characterized in that, a described sun front stall (1-1) is used for being connected with LC type fiber adapter, and described the moon back seat (1-2) is used for being connected with the LC type joints of optical fibre.
10. pluggable optical filter according to claim 2, it is characterized in that described the insertion on the fiber end face that first single-mode fiber (2-7) in first ceramic insertion core (2-1) and second ceramic insertion core (2-10) and second single-mode fiber (2-9) be coupled carried out optical coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101245370A CN101794022B (en) | 2010-03-15 | 2010-03-15 | Pluggable optical filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101245370A CN101794022B (en) | 2010-03-15 | 2010-03-15 | Pluggable optical filter |
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| Publication Number | Publication Date |
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| CN101794022A CN101794022A (en) | 2010-08-04 |
| CN101794022B true CN101794022B (en) | 2011-09-07 |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102208946B (en) * | 2011-04-22 | 2014-07-23 | 浙江华鑫实业有限公司 | Optical module extraction device |
| TWI435130B (en) * | 2012-02-20 | 2014-04-21 | Ezontek Technologies Co Ltd | Optical fiber connector and apparatus of facilitating to pull out optical fiber connector |
| CN105158856B (en) * | 2015-06-19 | 2017-05-24 | 武汉光迅科技股份有限公司 | Pluggable optical passive device |
| CN107707213A (en) * | 2017-10-19 | 2018-02-16 | 苏州优浦精密铸造有限公司 | A kind of spliced casing of filter of adjustable length |
| CN108549131A (en) * | 2018-05-09 | 2018-09-18 | 湖南中科光电有限公司 | Optical fibre device with ceramic insertion core and its assemble method |
| US10473860B1 (en) | 2018-05-11 | 2019-11-12 | Alliance Fiber Optic Products, Inc. | Compact devices for multiplexing applications |
| CN108873198A (en) * | 2018-08-13 | 2018-11-23 | 北京世维通科技股份有限公司 | Optical connection component and Joining Technology |
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| CN100502275C (en) * | 2003-03-26 | 2009-06-17 | 鸿富锦精密工业（深圳）有限公司 | Wave division multiplex device and its producing method |
| JP2007121420A (en) * | 2005-10-25 | 2007-05-17 | Furukawa Electric Co Ltd:The | Fiber bragg grating adaptor |
| CN1828351A (en) * | 2006-04-11 | 2006-09-06 | 天津大学 | Optical fiber waveguide type F-P filter |
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2010
- 2010-03-15 CN CN2010101245370A patent/CN101794022B/en active Active
Non-Patent Citations (2)
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| JP特开2007-121420A 2007.05.17 |
| JP特开平11-211917A 1999.08.06 |
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