CN102231473A - EDFA (Erbium-doped optical fiber amplifier) - Google Patents
EDFA (Erbium-doped optical fiber amplifier) Download PDFInfo
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- CN102231473A CN102231473A CN 201110133627 CN201110133627A CN102231473A CN 102231473 A CN102231473 A CN 102231473A CN 201110133627 CN201110133627 CN 201110133627 CN 201110133627 A CN201110133627 A CN 201110133627A CN 102231473 A CN102231473 A CN 102231473A
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Abstract
The invention discloses an EDFA (Erbium-doped optical fiber amplifier) which comprises a circuit part and an optical path part and is characterized in that an A/D (analog-to-digital) conversion circuit is connected with a current acquisition circuit, a temperature acquisition circuit and a power supply management circuit; a first pumping laser and a second pumping laser are connected with an automatic temperature control circuit, a laser drive circuit, the temperature acquisition circuit and the current acquisition circuit; the laser drive circuit is connected with a D/A (digital-to-analog) conversion circuit; a singlechip system is connected with the A/D conversion circuit, the D/A conversion circuit, a serial communication circuit, an LCD (liquid crystal display) circuit and a key scanning circuit; and the power supply management circuit supplies power for each circuit. The EDFA can be used for compensating attenuation of optical signals in an optical communication link.
Description
Technical field
The present invention relates to a kind of communicate optical signal and amplify instrument, particularly a kind of erbium-doped fiber amplifier.
Background technology
Along with the rise of all-optical network and the extension of optical fiber telecommunications system transmission range, the decay of light signal in transmission course more and more becomes the key factor that influences optical signal transmission, in order to make the farther of optical signal transmission, must amplify light signal, with the loss in the compensated fiber transmission course.Along with modern communications to development of Photonic Network, traditional light-current to light inversion and tupe have not satisfied the requirement of modern communications transmission, and erbium-doped fiber amplifier is with light-light form, directly light signal is amplified, and to sign indicating number type and speed all is transparent, can amplify digital signal, also can amplify analog signal, and its operation wavelength is consistent with optical fiber minimal losses window, can obtain to use widely in a new generation head's distance, big capacity, two-forty optical fiber telecommunications system.But there is attenuation problem in the light signal of existing erbium-doped fiber amplifier in optical communication link.
Summary of the invention
Technical problem to be solved by this invention provides a kind of erbium-doped fiber amplifier, and its compensated optical signal is in the decay of optical communication link.
For solveing the technical problem, the invention provides a kind of erbium-doped fiber amplifier, it is characterized in that, it comprises circuit part and light path part, and circuit part comprises electric power management circuit, optical power detecting circuit, drive circuit for laser, current acquisition circuit, temperature collection circuit, automatic temperature-adjusting control circuit, A/D change-over circuit, D/A change-over circuit, LCD display circuit, serial communication circuit, key scanning circuit, Single Chip Microcomputer (SCM) system; Light path part comprises first pump laser, second pump laser, Er-doped fiber, first wavelength division multiplexer, second wavelength division multiplexer, first optical branching device, second optical branching device, first optical isolator, second optical isolator, the first output photo-detector, the second output photo-detector; Treat that amplifying signal light enters through total port of first optical branching device, 1% light output enters the first output photo-detector, 99% light output enters first optical isolator, the light that sends with first pump laser is combined into one the tunnel via first wavelength division multiplexer, enter Er-doped fiber, the light that sends with second pump laser is combined into one the tunnel via second wavelength division multiplexer, enters optical isolator again, total port through second optical branching device enters again, and 1% light enters the second output photo-detector; The A/D change-over circuit connects current acquisition circuit, temperature collection circuit and electric power management circuit, first pump laser, second pump laser all connect automatic temperature-adjusting control circuit, drive circuit for laser, temperature collection circuit, current acquisition circuit, drive circuit for laser connects the D/A change-over circuit, Single Chip Microcomputer (SCM) system connects A/D change-over circuit, D/A change-over circuit, serial communication circuit, LCD display circuit, key scanning circuit, and electric power management circuit is given each circuit supply.
Positive progressive effect of the present invention is: erbium-doped fiber amplifier of the present invention is easy to use, and service behaviour is strong, the Output optical power height, and the operating wave length and width, noise factor is low, polarization irrelevant, and also simple for structure, easy to operate, intuitive display.In addition, erbium-doped fiber amplifier of the present invention shows to the LCD screen by the LCD display circuit, makes things convenient for user's real time inspection operating state and running parameter is set; First pump laser, second pump laser, Er-doped fiber, automatic temperature-adjusting control circuit etc. have guaranteed the optical property that high-output power and stability, wide bandwidth of operation, low-noise factor, polarization irrelevant etc. are excellent.
Description of drawings
Fig. 1 is the theory diagram of erbium-doped fiber amplifier of the present invention.
Embodiment
Lift a preferred embodiment below, and come the clearer the present invention that intactly illustrates in conjunction with the accompanying drawings.
As shown in Figure 1, erbium-doped fiber amplifier of the present invention comprises circuit part and light path part, and wherein circuit part comprises electric power management circuit, optical power detecting circuit, drive circuit for laser, current acquisition circuit, temperature collection circuit, automatic temperature-adjusting control circuit, A/D change-over circuit, D/A change-over circuit, LCD display circuit, serial communication circuit, key scanning circuit, Single Chip Microcomputer (SCM) system.Light path part comprises first pump laser, second pump laser, Er-doped fiber, first wavelength division multiplexer, second wavelength division multiplexer, first optical branching device, second optical branching device, first optical isolator, second optical isolator, the first output photo-detector, the second output photo-detector.
Treat that amplifying signal light enters through total port of first optical branching device, 1% light output enters the first output photo-detector, 99% light output enters first optical isolator, the light that sends with first pump laser is combined into one the tunnel via first wavelength division multiplexer, enter Er-doped fiber, the light that sends with second pump laser is combined into one the tunnel via second wavelength division multiplexer, enter optical isolator again, total port through second optical branching device enters again, 1% light enters the second output photo-detector, and 99% light is finally exported; The A/D change-over circuit connects current acquisition circuit, temperature collection circuit and electric power management circuit, first pump laser, second pump laser all connect automatic temperature-adjusting control circuit, drive circuit for laser, temperature collection circuit, current acquisition circuit, drive circuit for laser connects the D/A change-over circuit, Single Chip Microcomputer (SCM) system connects A/D change-over circuit, D/A change-over circuit, serial communication circuit, LCD display circuit, key scanning circuit, and electric power management circuit is given each circuit supply.The present invention's decay in optical communication link by circuit part and light path part compensated optical signal.
Guarantee that by automatic temperature-adjusting control circuit, temperature collection circuit, A/D change-over circuit and Single Chip Microcomputer (SCM) system first pump laser and second pump laser always work in 25 ℃ the temperature environment.Guarantee first pump laser and the second pump laser long-life steady operation by current acquisition circuit, A/D change-over circuit, D/A change-over circuit and Single Chip Microcomputer (SCM) system.Guarantee that by the first output photo-detector, the second output photo-detector, A/D change-over circuit and Single Chip Microcomputer (SCM) system whole system is operated in default Output optical power and the Output optical power scope.The user is by the specific requirement and the setting of described key scanning circuit input, Single Chip Microcomputer (SCM) system is undertaken each operating state of erbium-doped fiber amplifier is managed and monitors by A/D change-over circuit and D/A change-over circuit, threshold information about Lower Threshold, the Output optical power on the working temperature of rapid analysis Output optical power, Output optical power, pump laser, the operating current of pump laser, optical power gain, the Output optical power, and it is passed through the LCD display circuit export.Single Chip Microcomputer (SCM) system links to each other with controller by serial communication circuit, realizes communication and exchanges data with controller.
The flashlight of the present invention by the 1550nm wave band transmit in Er-doped fiber and the principle generation of Er3+ ionic interaction; When in Er-doped fiber, injecting enough pump lights, just major part can be in the Er3+ ionic pumping of ground state on excitation state, the Er3+ ion that is in excitation state is transferred on the metastable state rapidly again radiationlessly, because (being about 10ms) grown in the average life span of Er3+ ion on metastable state, thereby, be very easy between metastable state and ground state, form population inversion; When the signal photon by Er-doped fiber and Er3+ ionic interaction generation stimulated radiation effect, produce a large amount of and self identical photon, the signal photon is increased rapidly, produce the signal amplification.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these execution modes.Therefore, protection scope of the present invention is limited by appended claims.
Claims (1)
1. erbium-doped fiber amplifier, it is characterized in that, it comprises circuit part and light path part, and circuit part comprises electric power management circuit, optical power detecting circuit, drive circuit for laser, current acquisition circuit, temperature collection circuit, automatic temperature-adjusting control circuit, A/D change-over circuit, D/A change-over circuit, LCD display circuit, serial communication circuit, key scanning circuit, Single Chip Microcomputer (SCM) system; Light path part comprises first pump laser, second pump laser, Er-doped fiber, first wavelength division multiplexer, second wavelength division multiplexer, first optical branching device, second optical branching device, first optical isolator, second optical isolator, the first output photo-detector, the second output photo-detector; Treat that amplifying signal light enters through total port of first optical branching device, 1% light output enters the first output photo-detector, 99% light output enters first optical isolator, the light that sends with first pump laser is combined into one the tunnel via first wavelength division multiplexer, enter Er-doped fiber, the light that sends with second pump laser is combined into one the tunnel via second wavelength division multiplexer, enters optical isolator again, total port through second optical branching device enters again, and 1% light enters the second output photo-detector; The A/D change-over circuit connects current acquisition circuit, temperature collection circuit and electric power management circuit, first pump laser, second pump laser all connect automatic temperature-adjusting control circuit, drive circuit for laser, temperature collection circuit, current acquisition circuit, drive circuit for laser connects the D/A change-over circuit, Single Chip Microcomputer (SCM) system connects A/D change-over circuit, D/A change-over circuit, serial communication circuit, LCD display circuit, key scanning circuit, and electric power management circuit is given each circuit supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110133627 CN102231473A (en) | 2011-05-20 | 2011-05-20 | EDFA (Erbium-doped optical fiber amplifier) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110133627 CN102231473A (en) | 2011-05-20 | 2011-05-20 | EDFA (Erbium-doped optical fiber amplifier) |
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| CN102231473A true CN102231473A (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110133627 Pending CN102231473A (en) | 2011-05-20 | 2011-05-20 | EDFA (Erbium-doped optical fiber amplifier) |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330326A (en) * | 2016-08-18 | 2017-01-11 | 桂林创研科技有限公司 | Erbium-doped optical fiber amplifier |
| CN111048974A (en) * | 2019-12-20 | 2020-04-21 | 江苏亮点光电科技有限公司 | Optical fiber laser for improving efficiency of converting pump optical power into signal optical power |
| CN113992272A (en) * | 2021-10-28 | 2022-01-28 | 北京邮电大学 | Low-noise index single-stage bidirectional relay system for optical fiber time-frequency synchronization |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010043388A1 (en) * | 2000-02-29 | 2001-11-22 | Yochay Danziger | High order mode erbium-doped fiber amplifier |
| US20010050803A1 (en) * | 2000-06-08 | 2001-12-13 | Choi Bo-Hun | L-band erbium-doped fiber amplifier pumped by 1530 nm-band pump |
| CN101144956A (en) * | 2007-11-01 | 2008-03-19 | 上海交通大学 | L wave band bilateral backward pump erbium-doped optical fiber amplifier |
| CN101174903A (en) * | 2007-10-30 | 2008-05-07 | 中兴通讯股份有限公司 | Control device and system of erbium-doped fiber amplifier based on double CPUs |
| CN101217319A (en) * | 2008-01-10 | 2008-07-09 | 复旦大学 | A gain controllable two-segment erbium-doped optical fiber amplifier |
-
2011
- 2011-05-20 CN CN 201110133627 patent/CN102231473A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20010043388A1 (en) * | 2000-02-29 | 2001-11-22 | Yochay Danziger | High order mode erbium-doped fiber amplifier |
| US20010050803A1 (en) * | 2000-06-08 | 2001-12-13 | Choi Bo-Hun | L-band erbium-doped fiber amplifier pumped by 1530 nm-band pump |
| CN101174903A (en) * | 2007-10-30 | 2008-05-07 | 中兴通讯股份有限公司 | Control device and system of erbium-doped fiber amplifier based on double CPUs |
| CN101144956A (en) * | 2007-11-01 | 2008-03-19 | 上海交通大学 | L wave band bilateral backward pump erbium-doped optical fiber amplifier |
| CN101217319A (en) * | 2008-01-10 | 2008-07-09 | 复旦大学 | A gain controllable two-segment erbium-doped optical fiber amplifier |
Non-Patent Citations (1)
| Title |
|---|
| 《中国优秀硕士学位论文全文数据库》 20101012 肖涛 掺铒光纤放大器的智能化设计及实现 , * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330326A (en) * | 2016-08-18 | 2017-01-11 | 桂林创研科技有限公司 | Erbium-doped optical fiber amplifier |
| CN111048974A (en) * | 2019-12-20 | 2020-04-21 | 江苏亮点光电科技有限公司 | Optical fiber laser for improving efficiency of converting pump optical power into signal optical power |
| CN113992272A (en) * | 2021-10-28 | 2022-01-28 | 北京邮电大学 | Low-noise index single-stage bidirectional relay system for optical fiber time-frequency synchronization |
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Application publication date: 20111102 |