CN1298233A - On-line signal offset monitoring method - Google Patents
On-line signal offset monitoring method Download PDFInfo
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- CN1298233A CN1298233A CN00131200A CN00131200A CN1298233A CN 1298233 A CN1298233 A CN 1298233A CN 00131200 A CN00131200 A CN 00131200A CN 00131200 A CN00131200 A CN 00131200A CN 1298233 A CN1298233 A CN 1298233A
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- polarization
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Abstract
The present invention relates to the on-line signal monitoring technology for communication system and solves the problem of real-time judgement of signal offset. Specifically, the present invention is that after the incident light passes through the filter, one part of light is first coupled to polarization controlling unit, then fed to polarization analyzer and finally made to enter the detection and analysis controlling unit, and the polarization state of light is changed by a controller. The present invention utilizes the polarizatino characteristic of signal light and the non-polarization of ASE in effective tracking of signal peak without affecting the transmission in main optical path.
Description
The present invention and on-line monitoring signal bias are for the preposition fiber amplifier that has Signal Tracking Filter prevents dropout and wrong peak value lock-related.
Before the present invention proposes, monitor whether effectively locking signal wavelength of filter in real time, common control method is to drive optical filter, seeks the position by Output optical power maximum after the filter, is the signal wavelength position and regard as.The disadvantage of this method is necessary putative signal luminous power maximum, considers that simultaneously the loss of filter is relevant with wavelength.This method can not guarantee all the time effectively tracking signal.On the other hand, when adopting this method to carry out Wavelength-tracking, can not whether be offset by the real-time judge signal, its reason be system under the long journey state, do not allow to adjust significantly filter.
The objective of the invention is to utilize the different characteristic of the unpolarized characteristic of the polarization characteristic of flashlight and noise ASE, under the situation that does not influence the main optical path transmission, a kind of method of on-line monitoring signal bias is provided, fundamentally solve online judgement and identification signal peak, to guarantee effective tracking to signal peak.
Realize that concrete technical method of the present invention is: input spectrum enters the Polarization Control unit through after the output of optical filter through coupler time-division part light, enters analyzer again, enters detection, analysis controlling unit at last; For tracking signal peak effectively, by the Polarization Control unit time, its optical fiber will make it to form a very little stress on a ceramic body in the Polarization Control unit, initiatively to change the polarization state that enters before the analyzer.Judge that entering Polarization Control unit light before is flashlight, then marked change will appear in the power through light after the analyzer; Otherwise, if noise ASE peak does not then almost change.
The present invention compares with existing method, under the communication system normal running (operation) conditions, has polarization characteristic according to signal peak, and noise peak ASE does not possess the essential difference of this characteristic, online judgement and identification signal peak have fundamentally been solved, can guarantee effective tracking, avoid the operation of the system that influences signal peak.
Further specify the method block diagram of on-line monitoring signal bias of the present invention below.
In block diagram, (1) input spectrum, (2) optical filter, (3) coupler, (4) Polarization Control unit, (5) analyzer, (6) are surveyed, (7) output spectrum.
In the invention process, need the optical fiber that enters the Polarization Control unit is applied very little stress, to change polarization state of light.
Claims (2)
1, a kind of method of on-line monitoring signal bias, be to handle by the unpolarized characteristic that flashlight has polarization characteristic and a noise ASE, it is characterized in that after input spectrum is through optical filter output, enter the Polarization Control unit through coupler time-division part light, and then enter analyzer, enter the detection analysis control unit at last.
2, the method for a kind of on-line monitoring signal bias according to claim 1, it is characterized in that flashlight is by the Polarization Control unit time, its optical fiber will be on a ceramic body in the Polarization Control unit, make it to form a very little stress, enter analyzer polarization state before initiatively to change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001312006A CN1270455C (en) | 2000-11-30 | 2000-11-30 | On-line signal offset monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001312006A CN1270455C (en) | 2000-11-30 | 2000-11-30 | On-line signal offset monitoring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1298233A true CN1298233A (en) | 2001-06-06 |
| CN1270455C CN1270455C (en) | 2006-08-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001312006A Expired - Lifetime CN1270455C (en) | 2000-11-30 | 2000-11-30 | On-line signal offset monitoring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1270455C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081240A (en) * | 2010-12-21 | 2011-06-01 | 浙江大学 | Polarization state control system in high-speed optical fiber communication based on polarization detection module |
| CN103148795A (en) * | 2013-02-19 | 2013-06-12 | 上海亨通宏普通信技术有限公司 | Optical fiber strain and optical cable deformation monitoring device and method |
| CN109690976A (en) * | 2016-06-08 | 2019-04-26 | 泰科电子海底通信有限责任公司 | For reducing and the Polarization Modulation of the monitoring signal of the interference of data-signal |
-
2000
- 2000-11-30 CN CNB001312006A patent/CN1270455C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102081240A (en) * | 2010-12-21 | 2011-06-01 | 浙江大学 | Polarization state control system in high-speed optical fiber communication based on polarization detection module |
| CN102081240B (en) * | 2010-12-21 | 2012-07-04 | 浙江大学 | Polarization state control system in high-speed optical fiber communication based on polarization detection module |
| CN103148795A (en) * | 2013-02-19 | 2013-06-12 | 上海亨通宏普通信技术有限公司 | Optical fiber strain and optical cable deformation monitoring device and method |
| CN103148795B (en) * | 2013-02-19 | 2016-04-27 | 江苏亨通光网科技有限公司 | Fibre strain and optical cable deformation monitoring device and monitoring method |
| CN109690976A (en) * | 2016-06-08 | 2019-04-26 | 泰科电子海底通信有限责任公司 | For reducing and the Polarization Modulation of the monitoring signal of the interference of data-signal |
| CN109690976B (en) * | 2016-06-08 | 2022-02-08 | 萨伯康姆有限责任公司 | Polarization modulation of a supervisory signal for reducing interference with a data signal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1270455C (en) | 2006-08-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CI01 | Correction of invention patent gazette |
Correction item: Patentee Correct: Guangxun Science-Technology Co., Ltd., Wuhan False: Wuhan Inst. of Post and Telecommunication Sciences, Ministry of Information Indu Number: 33 Volume: 22 |
|
| CI03 | Correction of invention patent |
Correction item: Patentee Correct: Guangxun Science-Technology Co., Ltd., Wuhan False: Wuhan Inst. of Post and Telecommunication Sciences, Ministry of Information Indu Number: 33 Page: The title page Volume: 22 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20060816 |