CN1881848A - Optical channel performance on-line monitoring module - Google Patents
Optical channel performance on-line monitoring module Download PDFInfo
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- CN1881848A CN1881848A CNA2005100119401A CN200510011940A CN1881848A CN 1881848 A CN1881848 A CN 1881848A CN A2005100119401 A CNA2005100119401 A CN A2005100119401A CN 200510011940 A CN200510011940 A CN 200510011940A CN 1881848 A CN1881848 A CN 1881848A
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- collimating lens
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Abstract
The invention relates to an optical channel property on-line detecting module, which comprises: an input optical fiber which is a standard single-mode optical fiber; a base which is a rectangle plate; a collimation lens with an interface of optical fiber input while said input optical fiber is connected to said optical fiber input interface and said collimation lens is fixed at one side of base; a grating table which is trapeziform and its middle has one rectangle groove; said grating table is fixed on the base at one end of collimation lens; a diaphragm whose two surface form right angle while its has a light inlet and a light outlet; said diaphragm is fixed at the outer side of groove of grating table; a solid holographic grating fixed inside the groove of grating table; a light receive interface fixed on the base at one side of collimation lens; a photodetection detecting array fixed at the end of light receive interface; and a top cover which is a rectangle frame covering the base and fixed on the base.
Description
Technical field
The present invention is the optical channel performance on-line monitoring instrument in a kind of optical communication network, is the key components of ASON, and utilization is more widely also arranged in the spectrum analysis field.
Background technology
Extensive use along with the DWDM optical-fiber network, monitor effectively, the operation conditions of dwdm system in real time, thereby wave length shift, power fluctuation, signal to noise ratio of obtaining each channel etc. may cause the information of data error code, bust this, become requisite part in the structure of whole intelligent optical-fiber network gradually.Traditional optical-fiber network detector is just surveyed the luminous power summation of all channels, can not monitor the operation conditions of the each several parts such as amplifier, multiplexer, optical switch, optical fiber itself and optical fiber connection in each channel in the dwdm system and the system; Optical channel performance on-line monitoring module is that the light signal of telling a few percent from the transmission light path carries out spectrum analysis to it, direct measured channel luminous power, channel center's wavelength, signal to noise ratio (snr) etc., thereby obtain channel center's wave length shift, ASE noise, amplifier gain and gain tilt, channel signal parameter such as crosstalk, thereby can carry out power equalization, wavelength locking, long-term monitoring, wrong identification etc.In modern communication networks, optical channel on-line analysis module has become the nucleus module of a standard, appear on many core physical locations, and indispensable by providing optical channel information in the intellectuality of DWDM network, to play a part for management and control system.
And the monitoring instrument in current DWDM network, not only when installing, need constantly proofread and correct each parts, and because of operation causes the skew of component locations, in use the service behaviour instability of instrument also needs constantly to adjust and proofread and correct; In addition, because the needs that each degree of freedom is adjusted have designed many regulating mechanisms, thereby have caused the whole instrument volume bigger than normal; In the process of carrying out commercialization, these instruments also because structure is too complicated, are difficult to carry out standardization and large-scale production, cause cost too high.Above-mentioned shortcoming makes these monitoring instruments can't satisfy the demand for development of optical-fiber network.
Summary of the invention:
The objective of the invention is to; overcome that each parts works alone reliable and stable inadequately in other spectrum or the detecting instrument; debug the shortcoming of difficulty, provide a kind of and have good stable, reliability, debug convenient and simple, as to be convenient to standardization and large-scale production optical channel performance on-line monitoring module.
A kind of optical channel performance on-line monitoring module of the present invention is characterized in that, comprising:
One input optical fibre, this optical fiber are standard monofilm optical fiber;
One base, this base are the tabular of rectangle;
One collimation lens, this collimating lens has the interface of optical fiber input, and this input optical fibre is connected with the optical fiber input interface of collimating lens, and this collimating lens is fixed on the side on the base;
One grating platform, this grating platform is a quadrangle, and there is a rectangular recess centre of this grating platform, and this grating platform is fixed on the base, collimating lens one end;
One diaphragm, the two sides of this diaphragm is rectangular, and this diaphragm has light inlet and light-emitting window, and this diaphragm is fixed on the groove outside on the grating platform;
One volume holographic grating, this volume holographic grating are fixed in the groove on the grating platform;
One receiving interface of optical, this receiving interface of optical is fixed on the base, a side of collimating lens;
One photoelectronic detecting array, this photodetector array is fixed on the end of receiving interface of optical;
One top cover, this top cover are rectangular housing, and this top cover buckles on base and fixes.
Wherein said collimating lens and receiving interface of optical are all with a V-shaped rest and V-arrangement card card be fixed on the base.
One angle is arranged between wherein said collimating lens and the volume holographic grating, and this angle is that 5 degree are between 15 degree.
One angle is arranged between wherein said receiving interface of optical and the volume holographic grating, and this angle is that 5 degree are between 15 degree.
The axis of wherein said collimating lens and volume holographic grating and receiving interface of optical at grade.
Wherein said each parts carry out melanism to be handled, to prevent the reflective of each parts.
The present invention utilizes sub-unit position, optical channel performance on-line monitoring module middle part relative fixed, function characteristics with unified by to precision optical machinery and optical design reasonable combination, with these partly integrated be a complete structure.
Description of drawings
For further specifying technology contents of the present invention, the present invention is described in further detail below in conjunction with embodiment and accompanying drawing, wherein:
Fig. 1 is the structural representation of optical channel performance on-line monitoring module of the present invention;
Fig. 2 is the installation diagram of collimating lens and light tool platform and light tool jig;
Fig. 3 is the vertical view of top cover.
Embodiment
See also Fig. 1, a kind of optical channel performance on-line monitoring module of the present invention comprises:
One input optical fibre 1, this optical fiber 1 is standard monofilm optical fiber;
One base 10, this base 10 is the tabular of rectangle;
One collimation lens 2, this collimating lens 2 has the interface of optical fiber input, and this input optical fibre 1 is connected with the optical fiber input interface of collimating lens 2, and this collimating lens 2 is fixed on the side on the base 10;
One grating platform 6, this grating platform 6 is a quadrangle, and there is a rectangular recess centre of this grating platform 6, and this grating platform 6 is fixed on the base 10, collimating lens 2 one ends;
One diaphragm 5, the two sides of this diaphragm 5 is rectangular, and this diaphragm 5 has light inlet and light-emitting window, and this diaphragm 5 is fixed on the groove outside on the grating platform 6;
One volume holographic grating 7, this volume holographic grating 7 are fixed in the groove on the grating platform 6; Between wherein said collimating lens 2 and the volume holographic grating 7 angle is arranged, this angle is that 5 degree are between 15 degree;
One receiving interface of optical 8, this receiving interface of optical 8 is fixed on the base 10, a side of collimating lens 2; Between wherein said receiving interface of optical 8 and the volume holographic grating 7 angle is arranged, this angle is that 5 degree are between 15 degree;
One photoelectronic detecting array 9, this photodetector array 9 is fixed on the end of receiving interface of optical 8;
One top cover 11 (consulting Fig. 3), this top cover 11 is rectangular housing, this top cover 11 buckles on base 10 and fixes.
Wherein said collimating lens 2 and receiving interface of optical 8 all block and are fixed on the base 10 with a V-shaped rest 4 and V-arrangement card 3 (consults Fig. 2).
The axis of wherein said collimating lens 2 and volume holographic grating 7 and receiving interface of optical 8 at grade.
Wherein said each parts carry out melanism to be handled, to prevent the reflective of each parts.
All integrated components of the present invention all are installed in above the smooth base 10, these position component all are benchmark with the base, between collimating lens 2, volume holographic grating 7 and receiving interface of optical 8, must determine distance, angle and disposing way according to the transmission route of light, angle and relative position among the figure between the optical axis of demonstration collimating lens 2, volume holographic grating 7 and receiving interface of optical 8.
Because the position of all integrated components is a benchmark with smooth base 10 all, so the position of these parts and base should be fixed, after having determined the position, these parts also can be fixed on the base 10.Because these position component required precisions are very high,, adopt ultra-violet curing glue to carry out fastening so optical channel performance on-line monitoring module of the present invention has adopted the higher taper pin of positioning accuracy to position.
Light is by optical fiber 1 input collimating lens 2, become directional light, importing then around the grating platform has four unconnected grating baffle plates, and this baffle plate designs according to the size and dimension of volume holographic grating, can determine the installation site of volume holographic grating very easily, limit moving of grating; Owing to highly have only 1mm and four angles all to have mouth, not only can load and unload grating very easily, and can not cause what damage to grating; Simultaneously, the grating baffle plate can also intercept the grating working surface and contact with the diaphragm inwall, avoids the diaphragm inwall to scratch the working surface of volume holographic grating.
The size of diaphragm 5 light inlets and light-emitting window is determined according to the working region of volume holographic grating 7, handle on each surface of diaphragm 5 all melanism, on the one hand be to absorb incident light to fail part by diaphragm 5, thereby make it can not produce reflection and cause stray light, be the light of each surface reflection of absorption grating on the other hand, do not allow these light from the light-emitting window outgoing, thereby form noise at receiving interface of optical 8 places.
Diaphragm 5 can be installed on the grating platform 6 with bolt, thereby becomes one with grating platform 6.
Collimating lens 2, receiving interface of optical 8 all utilize V-arrangement card 3 be fastened on V-shaped rest 4 above.
The bottom surface of V-shaped rest 4 and grating platform 6 contacts with base 10 surfaces, and corresponding taper pin-hole is arranged, in assembling, can utilize taper pin-hole that V-shaped rest 4 and grating platform 6 are positioned, and can utilize ultra-violet curing glue that V-shaped rest 4 and grating platform 7 are fastened on the base 10.
Top cover 11 complements each other to form a box body with base 10, with screw threads for fastening; Top cover can draw song to be welded with a metal sheet.
Because optical channel performance on-line monitoring module of the present invention is very accurate instrument, the surperficial roughness of each of each part, angle, the depth of parallelism, perpendicularity etc. all require height very, so must carry out very accurate processing, otherwise the precision of a position does not reach the decreased performance that requirement all might cause whole instrument.
Claims (6)
1. an optical channel performance on-line monitoring module is characterized in that, comprising:
One input optical fibre, this optical fiber are standard monofilm optical fiber;
One base, this base are the tabular of rectangle;
One collimation lens, this collimating lens has the interface of optical fiber input, and this input optical fibre is connected with the optical fiber input interface of collimating lens, and this collimating lens is fixed on the side on the base;
One grating platform, this grating platform is a quadrangle, and there is a rectangular recess centre of this grating platform, and this grating platform is fixed on the base, collimating lens one end;
One diaphragm, the two sides of this diaphragm is rectangular, and this diaphragm has light inlet and light-emitting window, and this diaphragm is fixed on the groove outside on the grating platform;
One volume holographic grating, this volume holographic grating are fixed in the groove on the grating platform;
One receiving interface of optical, this receiving interface of optical is fixed on the base, a side of collimating lens;
One photoelectronic detecting array, this photodetector array is fixed on the end of receiving interface of optical;
One top cover, this top cover are rectangular housing, and this top cover buckles on base and fixes.
2. optical channel performance on-line monitoring module according to claim 1 is characterized in that, wherein said collimating lens and receiving interface of optical are all with a V-shaped rest and V-arrangement card card be fixed on the base.
3. optical channel performance on-line monitoring module according to claim 1 is characterized in that, it is that 5 degree are between 15 degree that an angle, this angle are arranged between wherein said collimating lens and the volume holographic grating.
4. optical channel performance on-line monitoring module according to claim 1 is characterized in that, it is that 5 degree are between 15 degree that an angle, this angle are arranged between wherein said receiving interface of optical and the volume holographic grating.
5. optical channel performance on-line monitoring module according to claim 1 is characterized in that the axis of wherein said collimating lens and volume holographic grating and receiving interface of optical at grade.
6. according to each described optical channel performance on-line monitoring module of claim 1 to 5, it is characterized in that wherein said each parts carry out melanism to be handled, to prevent the reflective of each parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100119401A CN1881848A (en) | 2005-06-16 | 2005-06-16 | Optical channel performance on-line monitoring module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100119401A CN1881848A (en) | 2005-06-16 | 2005-06-16 | Optical channel performance on-line monitoring module |
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| Publication Number | Publication Date |
|---|---|
| CN1881848A true CN1881848A (en) | 2006-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2005100119401A Pending CN1881848A (en) | 2005-06-16 | 2005-06-16 | Optical channel performance on-line monitoring module |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009519B (en) * | 2007-01-25 | 2010-09-01 | 中国科学院上海微系统与信息技术研究所 | A monitoring instrument for diffraction grating light signal with dual channel structure |
| US9014556B2 (en) | 2011-04-12 | 2015-04-21 | Huawei Technologies Co., Ltd. | Optical power monitoring method and apparatus |
| CN105182199A (en) * | 2015-09-23 | 2015-12-23 | 陕西公众智能科技有限公司 | High-voltage cable partial discharge online monitoring and discharge position positioning system and method |
-
2005
- 2005-06-16 CN CNA2005100119401A patent/CN1881848A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101009519B (en) * | 2007-01-25 | 2010-09-01 | 中国科学院上海微系统与信息技术研究所 | A monitoring instrument for diffraction grating light signal with dual channel structure |
| US9014556B2 (en) | 2011-04-12 | 2015-04-21 | Huawei Technologies Co., Ltd. | Optical power monitoring method and apparatus |
| CN105182199A (en) * | 2015-09-23 | 2015-12-23 | 陕西公众智能科技有限公司 | High-voltage cable partial discharge online monitoring and discharge position positioning system and method |
| CN105182199B (en) * | 2015-09-23 | 2018-03-27 | 陕西公众智能科技有限公司 | High-tension cable partial discharge monitoring and discharge position alignment system and method |
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