CN203289446U - An optical assembly with an OTRD function realized through the utilization of convergent light - Google Patents
An optical assembly with an OTRD function realized through the utilization of convergent light Download PDFInfo
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- CN203289446U CN203289446U CN2013202672447U CN201320267244U CN203289446U CN 203289446 U CN203289446 U CN 203289446U CN 2013202672447 U CN2013202672447 U CN 2013202672447U CN 201320267244 U CN201320267244 U CN 201320267244U CN 203289446 U CN203289446 U CN 203289446U
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Abstract
The utility model discloses an optical assembly with an OTRD function realized through the utilization of convergent light. The optical assembly with an OTRD function realized through the utilization of convergent light comprises a first emission assembly, etc. The first emission assembly and a single-mode fiber are respectively arranged in a left position and a right position. A first reception assembly and a second reception assembly are arranged vertically arranged to be between the first emission assembly and the single-mode fiber. The first reception assembly and the second reception assembly are arranged behind the first emission assembly and before the single-mode fiber. An intersection position of an axial lead of the first reception assembly and an axial lead of the first emission assembly is provided with a first optical filter in an inclined mode. An intersection position of an axial lead of the second reception assembly and an axial lead of the single-mode fiber is provided with a beam splitter in an inclined mode. A convergent lens is arranged between the first emission assembly and the first optical filter. The second emission assembly are arranged above the first emission assembly, the first reception assembly, and the second reception assembly. An axial lead of the first emission assembly and an axial lead of the second emission assembly intersect vertically, and a second optical filter is arranged at the intersection position in an inclined mode. According to the optical assembly with the OTRD function realized through the utilization of convergent light provided by the utility model, a light path between the first emission assembly and the single-mode fiber of the optical assembly is shortened. Through the utilization of the common convergent light technique, the optical assembly is enabled to be simple in structure, and the technological process is easier to realize.
Description
Technical field
The utility model relates to the optical element technology field, refers to especially a kind of with the optical assembly of converging light realization with the OTDR function.
Background technology
The English full name of OTDR is Optical Time Domain Reflectometer, and the Chinese meaning is optical time domain reflectometer.OTDR is the backscattering that produces of Rayleigh scattering while utilizing light to transmit in optical fiber and Fresnel reflection and the optoelectronic integration instrument of the precision made, it is widely used among the maintenance, construction of lightguide cable link, can carry out the measurement of transmission attenuation, the joint decay of fiber lengths, optical fiber and fault location etc.
Existing optical assembly is to realize the OTDR function by directional light, it realizes that by directional light optical assembly is to structural requirement, existing this optical assembly comprises two receiving units and two emitting modules, light path design is all on a plane, optical assembly length is very long, but use less the structure relative complex due to directional light in optical assembly.
The utility model content
It is a kind of with the optical assembly of converging light realization with the OTDR function that the purpose of this utility model is to provide, it adopts directional light to realize the optical assembly of OTDR function relatively, shortened in the optical assembly the first emitting module to the light path of monomode fiber, and by using conventional converging light technology, make the simple in structure of optical assembly, technique more easily realizes.
to achieve these goals, it is a kind of with the optical assembly of converging light realization with the OTDR function that the utility model provides, comprise first, two emitting modules, first, two receiving units and monomode fiber, described the first emitting module overlaps with the axial line of monomode fiber and both is left, right placement, described first, two receiving units are positioned between the first emitting module and monomode fiber and first, the axial line of two receiving units and the first emitting module intersects vertically, described first, two receiving units lay respectively at the first emitting module and monomode fiber after, the place ahead, axial line intersection slant setting first filter of described the first receiving unit and the first emitting module, described the first filter and the first receiving unit, angle between the first emitting module is 45 degree, the axial line intersection slant setting light splitting piece of described the second receiving unit and monomode fiber, described light splitting piece and the second receiving unit, angle between monomode fiber is 45 degree, be placed with convergent lens between wherein said the first emitting module and the first filter, described the second emitting module is vertical at the first emitting module and first, the top of two receiving units, described first, the axial line of two emitting modules intersects vertically, and axial line intersection slant setting the second filter, described the second filter and the first emitting module, angle between the second emitting module is 45 degree.
Be provided with the first isolator between described convergent lens and the first filter, described convergent lens, the first isolator overlap with the axial line of the first emitting module, and the lower end of described the second emitting module connects the second isolator.
After adopting such scheme, the utility model realizes that with converging light optical assembly with the OTDR function is by being vertically installed in the second emitting module the top of the first emitting module and first and second receiving unit, shortened in the optical assembly the first emitting module to the light path of monomode fiber, and by using conventional converging light technology, make the simple in structure of optical assembly, technique more easily realizes.
Further beneficial effect of the present utility model is:, by between convergent lens and the first filter, the first isolator being set, in the lower end of the second emitting module, connecting the second isolator, is the interference for the laser that prevents first and second emitting module.
Description of drawings
To be the utility model realize optical assembly plan structure schematic diagram with the OTDR function with converging light to Fig. 1;
To be the utility model realize optical assembly master TV structure schematic diagram (not containing the first receiving unit) with the OTDR function with converging light to Fig. 2.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As depicted in figs. 1 and 2,, with the optical assembly of converging light realization with the OTDR function, comprise the first emitting module 1, the second emitting module 2, the first receiving unit 3, the second receiving unit 4 and monomode fiber 5.The axial line of the first emitting module 1 overlaps with the axial line of monomode fiber 5 and both is left and right placement.The first receiving unit 3, the second receiving unit 4 are positioned between the first emitting module 1 and monomode fiber 5, and the first receiving unit 3, the axial line of the second receiving unit 4 and the axial line of the first emitting module 1 intersect vertically.The first receiving unit 3, the second receiving unit 4 lay respectively at rear, the place ahead of the first emitting module 1 and monomode fiber 5.The axial line intersection slant setting of the first receiving unit 3 and the first emitting module 1 has the angle between the first filter 6, the first filters 6 and the first receiving unit 3, the first emitting module 1 to be 45 degree.Be placed with successively from left to right convergent lens 7 and the first isolator 8 between the first emitting module 1 and the first filter 6.The axial line of convergent lens 7, the first isolator 8 overlaps with the axial line of the first emitting module 1.The second receiving unit 4 has light splitting piece 9 with the axial line intersection slant setting of monomode fiber 5.Angle between light splitting piece 9 and the second receiving unit 4, monomode fiber 5 is 45 degree.The second emitting module 2 is vertical at the top of the first emitting module 1 and the first receiving unit 3, the second receiving unit 4.The lower end of the second emitting module 2 is connected with the second isolator 10.The axial line of the first emitting module 1, the second emitting module 2 intersects vertically, and its axial line intersection slant setting has the second filter 11.Angle between the second filter 11 and the first emitting module 1, the second emitting module 2 is 45 degree.
During work, the first emitting module 1 emission detects light and form converging light after convergent lens 7, then through the first isolator 8, arrives the second filter 11 full impregnateds, then through the first filter 6 full impregnateds, then launch after light splitting piece 9 saturating 50% enters monomode fiber 5; The descending light of the second emitting module 2 emissions arrives the second filter 11 through the second isolator 10, by the second filter 11 total reflection to the first filter 6 full impregnateds, then launches after light splitting piece 9 full impregnateds enter monomode fiber 5; , then enter the first receiving unit 3, the first receiving units 3 through the first filter 6 total reflections light signal is converted to the signal of telecommunication through light splitting piece 9 full impregnateds by the up light of system ONU emission; The detection light that returns is after light splitting piece 9, and part detection light enters the second receiving unit 4, the second receiving units 4 and converts light signal to the signal of telecommunication.Detecting light can be 1625nm, and descending light can be 1490nm, and up light can be 1310nm, and detecting light light splitting piece ratio is reflection 50%, sees through 50%.
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection range of the present utility model is not limited to this.Those skilled in the art do on the utility model basis be equal to substitutes or conversion, all within protection range of the present utility model.Protection range of the present utility model is as the criterion with claims.
Claims (2)
1. realize optical assembly with the OTDR function with converging light for one kind, comprise first, two emitting modules, first, two receiving units and monomode fiber, described the first emitting module overlaps with the axial line of monomode fiber and both is left, right placement, described first, two receiving units are positioned between the first emitting module and monomode fiber and first, the axial line of two receiving units and the first emitting module intersects vertically, described first, two receiving units lay respectively at the first emitting module and monomode fiber after, the place ahead, axial line intersection slant setting first filter of described the first receiving unit and the first emitting module, described the first filter and the first receiving unit, angle between the first emitting module is 45 degree, the axial line intersection slant setting light splitting piece of described the second receiving unit and monomode fiber, described light splitting piece and the second receiving unit, angle between monomode fiber is 45 degree, it is characterized in that: be placed with convergent lens between described the first emitting module and the first filter, described the second emitting module is vertical at the first emitting module and first, the top of two receiving units, described first, the axial line of two emitting modules intersects vertically, and axial line intersection slant setting the second filter, described the second filter and the first emitting module, angle between the second emitting module is 45 degree.
2. as claimed in claim 1 with the optical assembly of converging light realization with the OTDR function, it is characterized in that: be provided with the first isolator between described convergent lens and the first filter, described convergent lens, the first isolator overlap with the axial line of the first emitting module, and the lower end of described the second emitting module connects the second isolator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202672447U CN203289446U (en) | 2013-05-16 | 2013-05-16 | An optical assembly with an OTRD function realized through the utilization of convergent light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202672447U CN203289446U (en) | 2013-05-16 | 2013-05-16 | An optical assembly with an OTRD function realized through the utilization of convergent light |
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| Publication Number | Publication Date |
|---|---|
| CN203289446U true CN203289446U (en) | 2013-11-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2013202672447U Expired - Lifetime CN203289446U (en) | 2013-05-16 | 2013-05-16 | An optical assembly with an OTRD function realized through the utilization of convergent light |
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| CN (1) | CN203289446U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526133A (en) * | 2017-08-24 | 2017-12-29 | 合肥文武信息技术有限公司 | A kind of fibre concentrator structure |
-
2013
- 2013-05-16 CN CN2013202672447U patent/CN203289446U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107526133A (en) * | 2017-08-24 | 2017-12-29 | 合肥文武信息技术有限公司 | A kind of fibre concentrator structure |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131113 |
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| CX01 | Expiry of patent term |