CN102035129A - Wavelength-tunable laser source - Google Patents
Wavelength-tunable laser source Download PDFInfo
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- CN102035129A CN102035129A CN 201010527632 CN201010527632A CN102035129A CN 102035129 A CN102035129 A CN 102035129A CN 201010527632 CN201010527632 CN 201010527632 CN 201010527632 A CN201010527632 A CN 201010527632A CN 102035129 A CN102035129 A CN 102035129A
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Abstract
The invention relates to a wavelength-tunable laser source which comprises a laser device drive current source and temperature control circuit, a Fabry-Perot laser device, a light output end connection polarization controller, a 2*2 fiber coupler, an erbium-doped fiber amplifier, a fiber Fabry-Perot tunable filter and an opto-isolator, wherein the input end of the Fabry-Perot laser device is connected with the output end of the laser device drive current source and temperature control circuit; one end of the light output end connection polarization controller is connected with the output end of the Fabry-Perot laser device; the end a of the 2*2 fiber coupler is connected with the other end of the light output end connection polarization controller, and the end b of the 2*2 fiber coupler is used as the output port; the input end of the erbium-doped fiber amplifier is connected with the end c of the 2*2 fiber coupler; one end of the fiber Fabry-Perot tunable filter is connected with the output end of the erbium-doped fiber amplifier; the input end of the opto-isolator is connected with the other end of the erbium-doped fiber amplifier; and the output end of the opto-isolator is connected with the end d of the 2*2 fiber coupler.
Description
Technical field
The present invention relates to a kind of tunable laser source implementation, particularly a kind of based on the fabry-Perot type laser that injects certainly and the tunable wave length lasing light emitter of optical fibre Fabry-perot tunable filter.
Background technology
In optical fiber communication and optical packet network technology, tunable laser is being brought into play more and more important effect as a kind of low-cost device.In communication process, tunable laser can be tuning within the specific limits, to satisfy the needs of different channels wavelength.Tunable laser can provide a plurality of wavelength because of it, is preferably the backup light source usually in dense wave division multipurpose (DWDM) communication system, and does not need the light source of each channel is backed up simultaneously, has saved the operation cost of system.
At present, the most successful tunable laser comprises auxiliary parallel coupled laser (GCSR laser) of grating and the multistage sampling grating laser (SGDBR laser) that the rear end sampled-grating reflects.Above-mentioned two kinds of lasers all belong to the distribution bragg feedback laser, mainly rely on reflecting grating to determine and regulate excitation wavelength.Typical grating regulation mechanism is exactly to utilize the plasma effect of free carrier to change refractive index, swashs the radio frequency rate thereby change.The method of exocoel injection locking also can realize tunable laser source, and it is to regulate excitation wavelength by the exocoel Fabry-Perot etalon.However, the structure more complicated of above-mentioned laser, manufacturing cost is high.The present invention be utilize many longitudinal modes fabry-Perot type laser of low manufacturing cost realize single module lasing from injection effect, realize the change of excitation wavelength simultaneously by the chip temperature of regulating optical fibre Fabry-perot tunable filter and laser.
Summary of the invention
The objective of the invention is to, provide a kind of based on the fabry-Perot type laser that injects certainly and the tunable wave length lasing light emitter of optical fibre Fabry-perot tunable filter, its output wavelength can be adjusted to DWDM wavelength channel arbitrarily.
The invention provides a kind of tunable wave length lasing light emitter, be to utilize the injection certainly of fabry-Perot type laser to realize single module lasing, and utilize the adjusting of tunable filter and chip of laser temperature to change operation wavelength, comprising:
One laser drive current source and temperature control circuit provides drive current and temperature control to fabry-Perot type laser;
One fabry-Perot type laser is the basic light source of Wavelength tunable light source, and the input of this fabry-Perot type laser is connected with the output of laser drive current source and temperature control circuit;
One light output end connects Polarization Controller, and the end that the light output end connects Polarization Controller is connected with the output of fabry-Perot type laser;
The fiber coupler of one 2*2, a end of the fiber coupler of this 2*2 is connected Polarization Controller with light output end the other end connects, and the b end of the fiber coupler of this 2*2 is as output port;
One erbium-doped fiber amplifier amplifies the output gain of light of fabry-Perot type laser, and the input of this erbium-doped fiber amplifier is connected with the c end of the fiber coupler of 2*2;
One optical fibre Fabry-perot tunable filter is to be used for selecting needed optical maser wavelength, and an end of this optical fibre Fabry-perot tunable filter is connected with the output of erbium-doped fiber amplifier;
One optical isolator prevents that backlight from entering the optical fibre Fabry-perot tunable filter, and the input of this optical isolator is connected with the other end of erbium-doped fiber amplifier, and the output of this optical isolator is connected with the d end of the fiber coupler of 2*2.
Wherein the excitation wavelength scope of fabry-Perot type laser and gain of EDFA commensurate in scope are at the C-band or the L-band of international communication standard.
Wherein said fabry-Perot type laser has thermistor and semiconductor cooler in encapsulation.
Wherein said erbium-doped fiber amplifier is unidirectional amplification.
Wherein said erbium-doped fiber amplifier is two-way amplification, when erbium-doped fiber amplifier is two-way amplification, adds an optical isolator at the bright dipping end and is gained to stop backlight.
Wherein said optical fibre Fabry-perot tunable filter is regulated the voltage that is added on the piezoelectric ceramic by a voltage control source, selects to pass through wavelength.
Connection between fiber coupler, erbium-doped fiber amplifier, optical fibre Fabry-perot tunable filter and the optical isolator of wherein said fabry-Perot type laser, light output end connection Polarization Controller, 2*2 is that the monomode fiber of employing standard or compatible optical fiber connect.
The advantage that the present invention has compared with prior art is: this Wavelength tunable light source simple in structure, and fabry-Perot type laser output light is through amplifying, and filtering from injecting, can obtain reliable and stable single module lasing then.By regulating the temperature (fine tuning) of filter (coarse adjustment) and chip of laser, can obtain continuously adjustable spectral region in the service band, promptly can obtain the required any wavelength of DWDM.In addition, the manufacturing cost of this scheme is also more cheap.
Description of drawings
For further specifying concrete technology contents of the present invention, below in conjunction with drawings and Examples to the detailed description of the invention as after, wherein:
Fig. 1 is a structural representation of the present invention.
Embodiment
See also shown in Figure 1ly, the invention provides a kind of tunable wave length lasing light emitter, be to utilize the injection certainly of fabry-Perot type laser to realize single module lasing, and utilize the adjusting of tunable filter and chip of laser temperature to change output wavelength, comprising:
One laser drive current source and temperature control circuit 1, drive current and temperature control are provided for fabry-Perot type laser 2, it is constant that the laser drive current that laser drive current source and temperature control circuit 1 provide in the work keeps, the temperature of the chip of laser in the fabry-Perot type laser 2 is provided by the temperature control current of regulating laser drive current source and temperature control circuit 1 and providing, thereby regulate the output wavelength of fabry-Perot type laser 2 among a small circle, this is the fine setting mechanism of Wavelength tunable light source operation wavelength;
One fabry-Perot type laser 2, it is the basic light source of Wavelength tunable light source, the multilongitudianl-mode laser of exporting during the initial work of this fabry-Perot type laser 2 outputs to erbium-doped fiber amplifier 4 and amplifies, select needed single-mode to pass through through optical fibre Fabry-perot tunable filter 5 again, this single-mode that chooses injects back fabry-Perot type laser 2 certainly by the fiber coupler 3 of 2*2, this light is from injecting pattern that strengthens self simultaneously and the pattern that suppresses other, thereby obtain higher side mode suppression ratio, and the second time of fabry-Perot type laser 2 export the preference pattern that comprises in the light and in erbium-doped fiber amplifier 4, obtain the higher gain of light, obtain stable single longitudinal mode output through such process is final; The input of this fabry-Perot type laser 2 is connected with the output of laser drive current source with temperature control circuit 1; The excitation wavelength scope of described fabry-Perot type laser 2 and the gain ranging of erbium-doped fiber amplifier 4 coupling are at the C-band or the L-band of international communication standard; Described fabry-Perot type laser 2 has thermistor and semiconductor cooler in encapsulation;
One light output end connects Polarization Controller 7, is used for controlling the light polarization state in the whole optical path, thereby obtains maximum luminous power, and the end that the light output end connects Polarization Controller 7 is connected with the output of fabry-Perot type laser 2;
The fiber coupler 3 of one 2*2, a end of the fiber coupler 3 of this 2*2 is connected Polarization Controller 7 with light output end the other end connects, and the b end of the fiber coupler 3 of this 2*2 is as output port 9;
One erbium-doped fiber amplifier 4, to the amplification that gains of the output light of fabry-Perot type laser 2, because there is mode competition in gain of light process, so export the preference pattern that comprises in the light and obtained the higher gain of light second time of fabry-Perot type laser 2, thereby obtain high power and stable single longitudinal mode laser output; The input of this erbium-doped fiber amplifier 4 is connected with the c end of the fiber coupler of 2*2 3; Described erbium-doped fiber amplifier 4 is unidirectional amplifications; Described erbium-doped fiber amplifier 4 is two-way amplifications, when erbium-doped fiber amplifier 4 is two-way amplification, adds an optical isolator at the bright dipping end and is gained to stop backlight;
One optical fibre Fabry-perot tunable filter 5 is to be used for selecting needed optical maser wavelength, and these Fabry-Perot tunable filter 5 adjusting wave-length coverages are big, as the coarse adjustment mechanism of Wavelength tunable light source operation wavelength; One end of this optical fibre Fabry-perot tunable filter 5 is connected with the output of erbium-doped fiber amplifier 4; Described optical fibre Fabry-perot tunable filter 5 is regulated the voltage that is added on the piezoelectric ceramic by a voltage control source, selects to pass through wavelength;
One optical isolator 6 prevents that backlight from entering optical fibre Fabry-perot tunable filter 5, disturbs it to select zlasing mode; The input of this optical isolator 6 is connected with the other end of erbium-doped fiber amplifier 4, and the output of this optical isolator 6 is connected with the d end of the fiber coupler of 2*2 3.
Connection between fiber coupler 3, erbium-doped fiber amplifier 4, optical fibre Fabry-perot tunable filter 5 and the optical isolator 6 of wherein said fabry-Perot type laser 2, light output end connection Polarization Controller 7,2*2 is that the monomode fiber 8 of employing standard or compatible optical fiber connect.
The above; only be the embodiment among the present invention, but protection scope of the present invention is not limited thereto, anyly is familiar with the people of this technology in the disclosed technical scope of the present invention; the conversion that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of claims.
Claims (7)
1. a tunable wave length lasing light emitter is to utilize the injection certainly of fabry-Perot type laser to realize single module lasing, and utilizes the adjusting of tunable filter and chip of laser temperature to change operation wavelength, comprising:
One laser drive current source and temperature control circuit provides drive current and temperature control to fabry-Perot type laser;
One fabry-Perot type laser is the basic light source of Wavelength tunable light source, and the input of this fabry-Perot type laser is connected with the output of laser drive current source and temperature control circuit;
One light output end connects Polarization Controller, and the end that the light output end connects Polarization Controller is connected with the output of fabry-Perot type laser;
The fiber coupler of one 2*2, a end of the fiber coupler of this 2*2 is connected Polarization Controller with light output end the other end connects, and the b end of the fiber coupler of this 2*2 is as output port;
One erbium-doped fiber amplifier amplifies the output gain of light of fabry-Perot type laser, and the input of this erbium-doped fiber amplifier is connected with the c end of the fiber coupler of 2*2;
One optical fibre Fabry-perot tunable filter is to be used for selecting needed optical maser wavelength, and an end of this optical fibre Fabry-perot tunable filter is connected with the output of erbium-doped fiber amplifier;
One optical isolator prevents that backlight from entering the optical fibre Fabry-perot tunable filter, and the input of this optical isolator is connected with the other end of erbium-doped fiber amplifier, and the output of this optical isolator is connected with the d end of the fiber coupler of 2*2.
2. tunable wave length lasing light emitter according to claim 1, wherein the excitation wavelength scope of fabry-Perot type laser and gain of EDFA commensurate in scope are at the C-band or the L-band of international communication standard.
3. tunable wave length lasing light emitter according to claim 1 and 2, wherein said fabry-Perot type laser has thermistor and semiconductor cooler in encapsulation.
4. tunable wave length lasing light emitter according to claim 1, wherein said erbium-doped fiber amplifier are unidirectional amplifications.
5. tunable wave length lasing light emitter according to claim 1, wherein said erbium-doped fiber amplifier is two-way amplification, when erbium-doped fiber amplifier is two-way amplification, adds an optical isolator at the bright dipping end and is gained to stop backlight.
6. tunable wave length lasing light emitter according to claim 1, wherein said optical fibre Fabry-perot tunable filter is regulated the voltage that is added on the piezoelectric ceramic by a voltage control source, selects to pass through wavelength.
7. tunable wave length lasing light emitter according to claim 1, connection between fiber coupler, erbium-doped fiber amplifier, optical fibre Fabry-perot tunable filter and the optical isolator of wherein said fabry-Perot type laser, light output end connection Polarization Controller, 2*2 is that the monomode fiber of employing standard or compatible optical fiber connect.
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| CN 201010527632 CN102035129A (en) | 2010-10-27 | 2010-10-27 | Wavelength-tunable laser source |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014190646A1 (en) * | 2013-05-31 | 2014-12-04 | 华为技术有限公司 | Wavelength-adjustable laser outputting method and adjustable laser device |
| CN104917048A (en) * | 2015-07-06 | 2015-09-16 | 大连藏龙光电子科技有限公司 | Small packaged long-distance transmission DFB laser |
| CN107086904A (en) * | 2017-05-23 | 2017-08-22 | 西南大学 | The Chaotic Wideband Signal generating means that centre wavelength is tunable |
| CN108011290A (en) * | 2017-11-03 | 2018-05-08 | 天津大学 | A kind of Wavelength tunable laser based on cursor effect |
| CN108917976A (en) * | 2018-04-24 | 2018-11-30 | 北京航天时代光电科技有限公司 | A kind of temperature measuring device based on tunable optical source and fiber grating |
| CN109073364A (en) * | 2016-06-29 | 2018-12-21 | 直观外科手术操作公司 | The method and apparatus for monitoring and optimizing for OFDR (FBG) demodulator |
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| JP2000244044A (en) * | 1999-02-18 | 2000-09-08 | Communication Research Laboratory Mpt | Regenerative mode synchronous laser using fabry-perot filter |
| CN1972035A (en) * | 2006-12-13 | 2007-05-30 | 北京航空航天大学 | A linear resonant cavity wide narrow line tunable optical fiber laser |
| CN101276982A (en) * | 2007-03-28 | 2008-10-01 | 中国科学院西安光学精密机械研究所 | Method for generating ultrashort pulse of external injection type gain switch laser |
| US7542489B2 (en) * | 2005-03-25 | 2009-06-02 | Pavilion Integration Corporation | Injection seeding employing continuous wavelength sweeping for master-slave resonance |
| CN101466180A (en) * | 2007-12-19 | 2009-06-24 | 中国科学院半导体研究所 | High speed modulation wavelength tunable light source with light power compensation function |
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| JP2000244044A (en) * | 1999-02-18 | 2000-09-08 | Communication Research Laboratory Mpt | Regenerative mode synchronous laser using fabry-perot filter |
| US7542489B2 (en) * | 2005-03-25 | 2009-06-02 | Pavilion Integration Corporation | Injection seeding employing continuous wavelength sweeping for master-slave resonance |
| CN1972035A (en) * | 2006-12-13 | 2007-05-30 | 北京航空航天大学 | A linear resonant cavity wide narrow line tunable optical fiber laser |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014190646A1 (en) * | 2013-05-31 | 2014-12-04 | 华为技术有限公司 | Wavelength-adjustable laser outputting method and adjustable laser device |
| CN104917048A (en) * | 2015-07-06 | 2015-09-16 | 大连藏龙光电子科技有限公司 | Small packaged long-distance transmission DFB laser |
| CN109073364A (en) * | 2016-06-29 | 2018-12-21 | 直观外科手术操作公司 | The method and apparatus for monitoring and optimizing for OFDR (FBG) demodulator |
| US10782121B2 (en) | 2016-06-29 | 2020-09-22 | Intuitive Surgical Operations, Inc. | Methods and apparatus for OFDR interrogator monitoring and optimization |
| CN109073364B (en) * | 2016-06-29 | 2021-02-05 | 直观外科手术操作公司 | Method and device for monitoring and optimizing OFDR demodulator |
| US11162782B2 (en) | 2016-06-29 | 2021-11-02 | Intuitive Surgical Operations, Inc. | Methods and apparatus for OFDR interrogator monitoring and optimization |
| US11733031B2 (en) | 2016-06-29 | 2023-08-22 | Intuitive Surgical Operations, Inc. | Methods and apparatus for OFDR interrogator monitoring and optimization |
| CN107086904A (en) * | 2017-05-23 | 2017-08-22 | 西南大学 | The Chaotic Wideband Signal generating means that centre wavelength is tunable |
| CN107086904B (en) * | 2017-05-23 | 2023-05-23 | 西南大学 | Broadband chaotic signal generating device with tunable center wavelength |
| CN108011290A (en) * | 2017-11-03 | 2018-05-08 | 天津大学 | A kind of Wavelength tunable laser based on cursor effect |
| CN108917976A (en) * | 2018-04-24 | 2018-11-30 | 北京航天时代光电科技有限公司 | A kind of temperature measuring device based on tunable optical source and fiber grating |
| CN108917976B (en) * | 2018-04-24 | 2020-08-14 | 北京航天时代光电科技有限公司 | Temperature measuring device based on tunable light source and fiber grating |
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Application publication date: 20110427 |