CN102135697A - Reflecting all-optical fiber light pulse coder - Google Patents
Reflecting all-optical fiber light pulse coder Download PDFInfo
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- CN102135697A CN102135697A CN 201110060663 CN201110060663A CN102135697A CN 102135697 A CN102135697 A CN 102135697A CN 201110060663 CN201110060663 CN 201110060663 CN 201110060663 A CN201110060663 A CN 201110060663A CN 102135697 A CN102135697 A CN 102135697A
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Abstract
The invention provides a reflecting all-optical fiber light pulse coder. In the coder, a pulse laser signal is input to a 1*N optical fiber coupler and is divided into N paths of pulses, wherein each path of optical fiber of the 1*N optical fiber coupler is connected with a variable optical fiber attenuator, a variable optical fiber delay line and an optical fiber reflector in turn respectively; and the N paths of pulses pass through the variable optical fiber attenuator and the variable optical fiber delay line, are reflected by the optical fiber reflector and pass through the variable optical fiber delay line, the variable optical fiber attenuator and the 1*N optical fiber coupler to be synthesized into a coding light pulse sequence consisting of N pulses in a time domain, wherein any sub-pulse amplitude in the coding light pulse sequence is continuously attenuated and adjusted by the variable optical fiber attenuator, and the spacing between adjacent sub-pulses is coarsely controlled by total optical fiber length of each path of optical fiber device and is continuously and precisely adjusted by the variable optical fiber delay line. The sub-pulses of the coding light pulse sequence which is generated by the coder are subjected to time delay twice, and the coding light pulse sequence in which the spacing of adjacent sub-pulses can be adjusted in a wider range can be generated.
Description
Technical field
The invention belongs to the full optical fiber optical optical pulser technical field in the laser instrument, be specifically related to a kind of reflecting type full-optical fiber light pulse scrambler, especially can produce the full optical fiber optical optical pulse encoder of the coded light pulses sequence that can adjust in a big way at adjacent subpulse interval.
Background technology
At present, known transmission-type optical fiber pulse encoder adopts fiber optic splitter that input optical pulse is divided into the N road, and the pulse of every road is passed through fiber optic splitter composite coding light pulse sequence at interval and after the variable fibre optic attenuator adjustment subpulse amplitude again through fiber lengths and variable optical fiber delayer adjustment subpulse.But owing to adopting the transmission-type structure, the subpulse of coded light pulses sequence is only once by delay optical fiber and variable optical fiber delayer, so the subpulse of coded pulse interval setting range is less.
Summary of the invention
In order to overcome the less deficiency of the adjacent subpulse interval setting range of coded light pulses sequence that existing transmission-type full optical fiber optical optical pulse code method produces, the invention provides a kind of reflecting type full-optical fiber light pulse scrambler.
The technical solution adopted in the present invention is: pulsed laser signal input 1 * N fiber coupler is divided into the pulse of N road, each road optical fiber of 1 * N fiber coupler is connected with fiber reflector with variable fibre optic attenuator, variable fibre delay line respectively successively, and the pulse of N road is synthesized the coded light pulses sequence of being made up of N pulse by variable fibre delay line, variable fibre optic attenuator and 1 * N fiber coupler after the mirror reflection of process fiber reflection more once more through variable fibre optic attenuator, variable fibre delay line in time domain.Any subpulse amplitude is by the adjusting that decays continuously of variable fibre optic attenuator in the coded light pulses sequence, and the interval of adjacent subpulse is regulated by the thick control of optical fiber total length of every road optical fibre device and by variable fibre delay line continuous precision in the coded light pulses sequence.
The present invention adopts fiber reflector to make pulse pass through to postpone optical fiber and variable optical fiber delayer for twice, and the subpulse interval setting range that encoded light arteries and veins row dash is a times of transmission-type full optical fiber optical optical pulse encoder, and setting range is become greatly.
The invention has the beneficial effects as follows that the subpulse of coded pulse sequence experiences time delay twice, can produce the coded light pulses sequence that adjacent subpulse can be adjusted at interval in a big way.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention 1.
Fig. 2 is the structural representation of embodiments of the invention 2.
Among the figure, 1. fiber optical circulator 2.1 * N fiber coupler 3. variable fibre optic attenuator 4. variable fibre delay line 5. fiber reflectors 6. fiber amplifiers.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
In the embodiment shown in fig. 1, fiber optical circulator 1 is connected with 1 * N fiber coupler, 2 input single fiber ends, 1 * N fiber coupler, 2 beam splitting output terminal n(n are among the 1-N any one the tunnel) the variable fibre optic attenuator 3 of road optical fiber and this road, variable fibre delay line 4 is connected successively with fiber reflector 5, pulse is divided into the pulse of N road through fiber optical circulator 1 input 1 * N fiber coupler 2 by constant power, behind each road pulse variable fibre optic attenuator 3 of process and the variable fibre delay line 4, passed through variable fibre delay line 4 and variable fibre optic attenuator 3 once more by the fiber reflection mirror reflection, and pass through 1 * N fiber coupler 2 at time domain composite coding light pulse sequence, at last through fiber optical circulator 1 output.Variable fibre optic attenuator 3 is used to regulate the amplitude that decay changes coded light pulses sequence subpulse, the optical fiber total length of every road optical fibre device is used for slightly controlling coded light pulses sequence subpulse at interval, and variable fibre delay line 4 is used for minute adjustment coded light pulses sequence subpulse at interval.
In embodiment illustrated in fig. 2, fiber optical circulator 1 is connected with 1 * N fiber coupler, 2 input single fiber ends, 1 * N fiber coupler, 2 beam splitting output terminal n(n are among the 1-N any one the tunnel) the variable fibre optic attenuator 3 of road optical fiber and this road, variable fibre delay line 4, fiber amplifier 6 is connected successively with fiber reflector 5, pulse is divided into the pulse of N road through fiber optical circulator 1 input 1 * N fiber coupler 2 by constant power, each road pulse is through variable fibre optic attenuator 3, behind variable fibre delay line 4 and the fiber amplifier 6, passed through fiber amplifier 6 once more by the fiber reflection mirror reflection, variable fibre delay line 4 and variable fibre optic attenuator 3, and pass through 1 * N fiber coupler 2 at time domain composite coding light pulse sequence, at last through fiber optical circulator 1 output.Variable fibre optic attenuator 3 is used to regulate the amplitude that decay changes coded light pulses sequence subpulse, the optical fiber total length of every road optical fibre device is used for slightly controlling the subpulse interval of coded light pulses sequence, variable fibre delay line 4 is used for the subpulse interval of minute adjustment coded light pulses sequence, and fiber amplifier 6 is used to amplify the beam splitting loss of compensation coding light pulse sequence subpulse.
In embodiment illustrated in figures 1 and 2, the optical fiber that 1 * N fiber coupler 2, variable fibre optic attenuator 3, variable fibre delay line 4, fibre reflector 5, fiber amplifier 6 adopt can be single-mode fiber, multimode optical fiber or polarization maintaining optical fibre; 1 * N fiber coupler 2 can be by 1 * n(n＜N) the fiber coupler cascade constitutes; Can adopt variable fibre optic attenuator 3 electric light, magneto-optic, acousto-optic and other methods realize the scalable decay of light pulse.
Claims (2)
1. reflecting type full-optical fiber light pulse scrambler, it is characterized in that: fiber optical circulator (1) is connected with 1 * N fiber coupler (2) input single fiber end, and the every road of 1 * N fiber coupler (2) beam splitting output terminal optical fiber is connected successively with the variable fibre optic attenuator in this road (3), variable fibre delay line (4) and fiber reflector (5).
2. reflecting type full-optical fiber light pulse scrambler according to claim 1 is characterized in that: described scrambler is provided with fiber amplifier (6) between variable fibre delay line (4) and fiber reflector (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060663 CN102135697A (en) | 2011-03-15 | 2011-03-15 | Reflecting all-optical fiber light pulse coder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110060663 CN102135697A (en) | 2011-03-15 | 2011-03-15 | Reflecting all-optical fiber light pulse coder |
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| CN102135697A true CN102135697A (en) | 2011-07-27 |
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| CN 201110060663 Pending CN102135697A (en) | 2011-03-15 | 2011-03-15 | Reflecting all-optical fiber light pulse coder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064199A (en) * | 2012-12-10 | 2013-04-24 | 上海交通大学 | Reflection-type adjustable light delay line |
| CN110057385A (en) * | 2019-04-10 | 2019-07-26 | 中山水木光华电子信息科技有限公司 | Identification system based on optical fiber multilayer reflecting surface combined coding |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005070382A (en) * | 2003-08-25 | 2005-03-17 | Tokyo Institute Of Technology | Optical digital-to-analog conversion type code-identifying device and method |
| CN101079679A (en) * | 2006-05-23 | 2007-11-28 | 冲电气工业株式会社 | Optical multiplex communication system and delay quantity adjustment method |
| CN101167015A (en) * | 2005-04-27 | 2008-04-23 | 独立行政法人科学技术振兴机构 | Optical analog/digital conversion method and apparatus thereof |
| CN201063639Y (en) * | 2007-06-08 | 2008-05-21 | 广州市永大光通信技术发展有限公司 | Light pulse coder/decoder |
| CN201984266U (en) * | 2011-03-15 | 2011-09-21 | 中国工程物理研究院激光聚变研究中心 | Reflection full optical fiber pulse encoder |
-
2011
- 2011-03-15 CN CN 201110060663 patent/CN102135697A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005070382A (en) * | 2003-08-25 | 2005-03-17 | Tokyo Institute Of Technology | Optical digital-to-analog conversion type code-identifying device and method |
| CN101167015A (en) * | 2005-04-27 | 2008-04-23 | 独立行政法人科学技术振兴机构 | Optical analog/digital conversion method and apparatus thereof |
| CN101079679A (en) * | 2006-05-23 | 2007-11-28 | 冲电气工业株式会社 | Optical multiplex communication system and delay quantity adjustment method |
| CN201063639Y (en) * | 2007-06-08 | 2008-05-21 | 广州市永大光通信技术发展有限公司 | Light pulse coder/decoder |
| CN201984266U (en) * | 2011-03-15 | 2011-09-21 | 中国工程物理研究院激光聚变研究中心 | Reflection full optical fiber pulse encoder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103064199A (en) * | 2012-12-10 | 2013-04-24 | 上海交通大学 | Reflection-type adjustable light delay line |
| CN110057385A (en) * | 2019-04-10 | 2019-07-26 | 中山水木光华电子信息科技有限公司 | Identification system based on optical fiber multilayer reflecting surface combined coding |
| CN110057385B (en) * | 2019-04-10 | 2023-11-21 | 中山水木光华电子信息科技有限公司 | Identification system based on optical fiber multilayer reflecting surface combination coding |
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Application publication date: 20110727 |