CN103308997A - OLT light assembly integrated with OTDR - Google Patents
OLT light assembly integrated with OTDR Download PDFInfo
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- CN103308997A CN103308997A CN2012100564522A CN201210056452A CN103308997A CN 103308997 A CN103308997 A CN 103308997A CN 2012100564522 A CN2012100564522 A CN 2012100564522A CN 201210056452 A CN201210056452 A CN 201210056452A CN 103308997 A CN103308997 A CN 103308997A
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Abstract
The utility mode relates to an OLT light assembly integrated with an OTDR. The OLT light assembly comprises a horizontal optical axis, a first vertical optical axis, a second vertical optical axis and a third vertical optical axis. A first coaxial light emitting assembly and a single optical fiber are respectively located on two ends of the horizontal optical axis; a second coaxial light emitting assembly is arranged along the first vertical optical axis, a first WDM optical filter is arranged at an intersection of the first vertical optical axis and the horizontal optical axis, and a first lens and a second lens are arranged between the optical filter and an optical end face of the single optical fiber; a first coaxial light receiving assembly is arranged along the second vertical optical axis, and a second WDM optical filter is arranged at an intersection of the second vertical optical axis and the horizontal optical axis; and a second coaxial light receiving assembly is arranged along the third vertical optical axis, and a beam-splitting sheet is arranged at an intersection of the third vertical optical axis and the horizontal optical axis. Failure occurrence positions can be detected directly through an OLT module conveniently when an optical fiber link goes wrong, an independent optical time domain reflectometer (OTDR) is not required, the network maintenance is convenient, and the cost is low.
Description
Technical field
The present invention relates to the optical line terminal (Optical Line Terminal is hereinafter to be referred as OLT) that Optical Access Network is used, relate in particular to the OLT optical assembly of a kind of integrated OTDR.
Background technology
The optical assembly that is used for the OLT end at present comprises: one is used for the single fiber of transmitted in both directions, one light emission component, the light transmit-receive integrated assembly that one optical fiber receive module and a wave-division multiplexer filter (WDM filter) form, be mainly used in realizing an OLT module and a plurality of ONU(Optical Network Unit) bidirectional transfer of information of user side, but do not possess monitor network optical fiber link fault diagnosis functions, in case network path breaks down between OLT and certain ONU, need at first disconnect OLT, insert expensive optical time domain reflectometer (Optical Time Domain Reflector, abbreviation OTDR) the high shortcoming of maintenance of network cost is caused in the position of trouble-shooting point.
Summary of the invention
For overcoming above shortcoming, the invention provides the OLT optical assembly of a kind of integrated OTDR of compact conformation.
For realizing the object of the invention, the OLT optical assembly of a kind of integrated OTDR of the present invention comprises: a horizontal optical axis, first, second, and third vertical optical axis, one first axis light emitting module and a single fiber lay respectively at described horizontal optical axis two ends; One second axis light emitting module is along the described first vertical optical axis setting, and this vertical optical axis and described horizontal optical axis intersection are provided with one the one WDM optical filter, are provided with first, second lens between this optical filter and the single fiber light end face; One first axis light receiving unit is along the described second vertical optical axis setting, and this vertical optical axis and described horizontal optical axis intersection are provided with one the 2nd WDM optical filter; One second axis light receiving unit is along described the 3rd vertical optical axis setting, and this vertical optical axis and described horizontal optical axis X intersection are provided with a light splitting piece.
Described first, second axis light emitting module is respectively equipped with a Distributed Feedback Laser.
The described first axis light receiving unit is provided with an APD optical receiver.
The described second axis light receiving unit is provided with a PIN optical receiver.
Also comprise an optoisolator, this isolator is between described first, second lens.
Because the OLT of the integrated OTDR of said structure is provided with the second axis light receiving unit that is used for receiving the fault reflected signal for the second axis light emitting module and of the descending fault diagnosis light signal of emission with optical assembly, the function of optical time domain reflectometer OTDR is integrated in the common OLT module, when optical fiber link breaks down, just can directly easily detect the fault occurrence positions by the OLT module, no longer need independent optical time domain reflectometer OTDR, network operation is convenient and cost is low.
Description of drawings
Fig. 1 represents the OLT of the integrated OTDR of the present invention optical assembly light channel structure synoptic diagram.
Embodiment
Describe most preferred embodiment of the present invention in detail below in conjunction with accompanying drawing.
The OLT optical assembly of integrated OTDR as shown in Figure 1, comprise: a horizontal optical axis X, first, second, and third vertical optical axis Y1, Y2 Y3, an OLT hold the first axis light emitting module 10 and that is used for emission downlink optical signal λ 1 to be used for transmission downlink optical signal λ 1 and hold the single fiber 70 of uplink optical signal λ 3 to lay respectively at horizontal optical axis X two ends from ONU; The second axis light emitting module 90 that one OLT end is used for the descending fault diagnosis light signal λ 2 of emission arranges along the first vertical optical axis Y1, this vertical optical axis and horizontal optical axis X intersection are provided with one the one WDM optical filter 20, be provided with first between this optical filter 20 and the single fiber 70 smooth end faces, second lens 30,60, downlink optical signal λ 1 and descending fault diagnosis light signal λ 2 transfer to first lens 30 along horizontal optical axis X after total transmissivity and the total reflection respectively through a WDM optical filter 20 and will converge light and become directional light, are incident to second lens 60 again and directional light is become converge light and transfer to single fiber 70 outputs.The one first axis light receiving unit 80 that is used for reception uplink optical signal λ 3 arranges along the second vertical optical axis Y2, this vertical optical axis and horizontal optical axis X intersection are provided with one the 2nd WDM optical filter 40, are used for uplink optical signal λ 3 total reflection to the first axis light receiving units 80 are received.The one second axis light receiving unit 100 that is used for the reflected signal λ 2 ' of the descending fault diagnosis light signal λ 2 of reception arranges along the 3rd vertical optical axis Y3, this vertical optical axis and horizontal optical axis X intersection are provided with a light splitting piece 50, this light splitting piece is used for that reflected signal λ 2 ' part luminous power is reflexed to the second axis light receiving unit 100 and receives, its splitting ratio can be reflection 10%, transmission 90%.Wherein, first, second axis light emitting module 10,90 is respectively equipped with a Distributed Feedback Laser; The first axis light receiving unit 80 is provided with an APD optical receiver; The second axis light receiving unit 100 is provided with a PIN optical receiver.For reduce first, second axis light emitting module 10,90 laser instrument disturbs, and also comprises an optoisolator 110, this isolator is between first, second lens 30,60.The wavelength of downlink optical signal λ 1 can be that the wavelength of 1490nm, descending fault diagnosis light signal λ 2 can be that the wavelength of 1625nm, uplink optical signal λ 3 can be 1310nm.
The OLT optical assembly of the integrated OTDR of said structure, its principle of work is as follows: emission downlink optical signal λ 1---1490nm forms first through a WDM optical filter 20 total transmissivities and converges light the first axis light emitting module 10, the descending fault diagnosis light signal λ 2 of the second axis light emitting module, 90 emissions---1625nm forms second through a WDM optical filter 20 total reflections and converges light, first, second converges light becomes directional light through first lens 30, through optoisolator 110, behind the 2nd WDM optical filter 40 and light splitting piece 50 total transmissivities, be incident to second packaged lens 60 again and become by directional light and converge light, converge to behind the single fiber 70 smooth end faces to the output of ONU end.Uplink optical signal λ 3 from the ONU end---1310nm forms directional light through single fiber 70 smooth surface feeding sputtering to the second packaged lens 60, this directional light is incident to 40 total reflections of the 2nd WDM optical filter again behind light splitting piece 50 total transmissivities, the uplink optical signal λ 3 after the reflection---1310nm receives through first optical fiber receive module 80 light signal is converted to electric signal output.When optical fiber link breaks down, descending fault diagnosis light signal λ 2---1625nm is through the reflection of optical fiber link trouble spot, its reflected signal λ 2 '---1625nm is through being incident to light splitting piece 50 by converging after light becomes directional light after single fiber 70 smooth surface feeding sputtering to the second packaged lens 60, this light splitting piece reflected optical power 10% to second axis light receiving unit 100 on demand receives, light signal is converted to electric signal output, by this electric signal is carried out analyzing and processing, to determine the definite position of optical fiber link trouble spot, removed the optical time domain reflectometer of prior art value on demand costliness from.
Claims (5)
1. the OLT optical assembly of an integrated OTDR, it is characterized in that, comprise: a horizontal optical axis X, first, second, and third vertical optical axis (Y1, Y2 Y3), one first axis light emitting module (10) and a single fiber (70) lay respectively at described horizontal optical axis (X) two ends; One second axis light emitting module (90) arranges along described first vertical optical axis (Y1), this vertical optical axis and described horizontal optical axis (X) intersection are provided with one the one WDM optical filter (20), are provided with first, second lens (30,60) between this optical filter and single fiber (70) the light end face; One first axis light receiving unit (80) arranges along described second vertical optical axis (Y2), and this vertical optical axis and described horizontal optical axis (X) intersection are provided with one the 2nd WDM optical filter (40); One second axis light receiving unit (100) arranges along described the 3rd vertical optical axis (Y3), and this vertical optical axis and described horizontal optical axis (X) intersection are provided with a light splitting piece (50).
2. the OLT optical assembly of integrated OTDR according to claim 1 is characterized in that, described first, second axis light emitting module (10,90) is respectively equipped with a Distributed Feedback Laser.
3. the OLT optical assembly of integrated OTDR according to claim 2 is characterized in that, the described first axis light receiving unit (80) is provided with an APD optical receiver.
4. the OLT optical assembly of integrated OTDR according to claim 3 is characterized in that, the described second axis light receiving unit (100) is provided with a PIN optical receiver.
5. according to the OLT optical assembly of claim 1,2,3 or 4 described integrated OTDR, it is characterized in that, also comprise an optoisolator (110), this isolator is positioned between described first, second lens (30,60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100564522A CN103308997A (en) | 2012-03-06 | 2012-03-06 | OLT light assembly integrated with OTDR |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100564522A CN103308997A (en) | 2012-03-06 | 2012-03-06 | OLT light assembly integrated with OTDR |
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| CN103308997A true CN103308997A (en) | 2013-09-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278036A (en) * | 2015-11-13 | 2016-01-27 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN106646775A (en) * | 2016-10-26 | 2017-05-10 | 青岛海信宽带多媒体技术有限公司 | Dual-fiber optical module |
| CN107045168A (en) * | 2017-06-12 | 2017-08-15 | 广东瑞谷光网通信股份有限公司 | A kind of high-performance single fiber four-way ComboPON optical devices |
| WO2018223250A1 (en) * | 2017-06-09 | 2018-12-13 | 深圳市亚派光电器件有限公司 | Four-way photoelectric component compatible with gpon and 10gpon |
| CN112698451A (en) * | 2019-10-22 | 2021-04-23 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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| KR20050081749A (en) * | 2004-02-16 | 2005-08-19 | 한국과학기술원 | Bi-directional optical transceiver module |
| CN201413414Y (en) * | 2009-04-30 | 2010-02-24 | 深圳新飞通光电子技术有限公司 | Single-fiber two-way light receiving-transmitting integral component |
| CN201583679U (en) * | 2010-01-22 | 2010-09-15 | 东南大学 | Mould pressing plastic extrusion lensing photo-conduction tube |
| CN202453549U (en) * | 2012-03-06 | 2012-09-26 | 深圳新飞通光电子技术有限公司 | Optical line terminal (OLT) light assembly integrated with optical time domain reflector (OTDR) |
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2012
- 2012-03-06 CN CN2012100564522A patent/CN103308997A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050081749A (en) * | 2004-02-16 | 2005-08-19 | 한국과학기술원 | Bi-directional optical transceiver module |
| CN201413414Y (en) * | 2009-04-30 | 2010-02-24 | 深圳新飞通光电子技术有限公司 | Single-fiber two-way light receiving-transmitting integral component |
| CN201583679U (en) * | 2010-01-22 | 2010-09-15 | 东南大学 | Mould pressing plastic extrusion lensing photo-conduction tube |
| CN202453549U (en) * | 2012-03-06 | 2012-09-26 | 深圳新飞通光电子技术有限公司 | Optical line terminal (OLT) light assembly integrated with optical time domain reflector (OTDR) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105278036A (en) * | 2015-11-13 | 2016-01-27 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN106646775A (en) * | 2016-10-26 | 2017-05-10 | 青岛海信宽带多媒体技术有限公司 | Dual-fiber optical module |
| WO2018223250A1 (en) * | 2017-06-09 | 2018-12-13 | 深圳市亚派光电器件有限公司 | Four-way photoelectric component compatible with gpon and 10gpon |
| CN107045168A (en) * | 2017-06-12 | 2017-08-15 | 广东瑞谷光网通信股份有限公司 | A kind of high-performance single fiber four-way ComboPON optical devices |
| CN112698451A (en) * | 2019-10-22 | 2021-04-23 | 青岛海信宽带多媒体技术有限公司 | Optical module |
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Application publication date: 20130918 |