CN101202409A - Separate linetype cavity wavelength interval tunable single polarization dual wavelength optical fibre grating laser - Google Patents
Separate linetype cavity wavelength interval tunable single polarization dual wavelength optical fibre grating laser Download PDFInfo
- Publication number
- CN101202409A CN101202409A CNA2007101780458A CN200710178045A CN101202409A CN 101202409 A CN101202409 A CN 101202409A CN A2007101780458 A CNA2007101780458 A CN A2007101780458A CN 200710178045 A CN200710178045 A CN 200710178045A CN 101202409 A CN101202409 A CN 101202409A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- grating
- polarization
- laser
- wavelength
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses an independent linear cavity wavelength interval adjusting single polarization dual-wavelength optical fiber grating laser. The device is connected with a polarization maintaining optical fiber grating (11) between active fibers (21) and (22); two external ends of the active fibers (21) and (22) are connected with broadband gratings (12) and (13) to form two independent resonant cavities respectively with the polarization maintaining grating (11); pumping lights (31) and (32) are coupled into the active fibers (21) and (22) by a coupler and single polarization lasers are generated respectively; the wavelength interval adjusting of output dual-wavelength laser is implemented by adopting temperature or/and stress adjusting through an adjuster (51).
Description
Technical field
The present invention relates to a kind of fiber laser, is a kind of separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser specifically.
Background technology
The birefringence of ordinary optic fibre is little, makes the reflection peak that has only of fiber grating on ordinary optic fibre, comprises two polarization states in this reflection peak.Because the polarization maintaining optical fibre birefringence is big, the effective refractive index difference of fast and slow axis, 2 independently polarization states are arranged, the fiber grating of making on polarization maintaining optical fibre has 2 reflection peaks, p.1078～1080 these 2 reflection peak correspondences independently 2 polarization states＜" utilizing grating research polarization maintaining optical fibre temperature characterisitic " Chinese lasers 33 (8) 2006 such as peaceful outline " 〉, these two reflection peaks all are single polarization states.
Fiber-grating laser is a kind of up-and-coming light source in the optical fiber telecommunications system, its advantage is mainly reflected in: the difficult WDM standard of wavelength that meets the ITU-T suggestion of the wavelength of (1) semiconductor laser, and cost is very high, and the rare-earth doped optical fibre grating laser utilizes fiber grating etc. can determine wavelength very exactly, and cost is very low.(2) as the rare-earth doped optical fibre manufacture craft comparative maturity of gain, rare earth ion doped process is simple, and fibre loss is little.(3) adopt the high pumping of dexterous compact efficient to become possibility.(4) fiber-grating laser has the waveguide type optical fiber structure, can produce higher power density at fiber core layer.Optical fiber structure has higher area-volume ratio, thereby radiating effect is better.Compatible good with standard traffic optical fiber can be adopted multiple fiber optic components such as fiber grating, coupler, reduces the demand of block optical element and the trouble of light path mechanical adjustment, greatly simplifies the design and the making of fiber-grating laser.(5) broadband is one of main development trend of optical fiber communication, and fiber-grating laser can be realized laser output by mixing different rare earth ions in the broadband range of 380～3900nm, and it is easy and tunable that wavelength is selected.(6) little, the anti-electromagnetic interference of the frequency chirp effect under the high frequency modulated, temperature expansion coefficient are little etc. than semiconductor laser.
And common non-polarization maintaining optical fibre, because manufacturing process causes core cross sections that certain ovality is arranged, or, cause the anisotropy of optical fibre refractivity because optical fiber component material coefficient of thermal expansion coefficient inhomogeneities causes anisotropic stress or applied stress on the optical fiber cross section.In a word, when the symmetry in optical fiber cross section is destroyed, can produce between the orthogonal polarization modes of two different transmissions that formed by birefringence and intercouple, because the transmission of two polarization modes differs very little, thereby Mode Coupling is very strong.The birefringence that optical fiber structure itself exists and the effect of outer bound pair optical fiber all are at random, thereby the coupling between the polarization mode is at random, therefore generally speaking, the laser of fiber laser output is the polarization confusion, can't reach the degree of polarization of semiconductor laser output laser, such laser output under many circumstances all can't be practical.Single polarization dual wavelength optical fibre laser is realized in the laboratory at present, has utilized complicated control mode such as polarization maintaining optical fibre, polarization-maintaining coupler and Polarization Control, and the wavelength interval cannot be regulated, and is with high costs, and the practicability difficulty is big.The present invention does not need complicated Polarization Control control, adopts the common Active Optical Fiber of simple low cost, ordinary coupler just can realize single polarization dual-wavelength, and adopts straightforward procedure just can realize that the wavelength interval is tuning.
Summary of the invention
Purpose of the present invention just provides a kind of separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser, it can overcome the deficiency of existing single polarization dual-wavelength fiber grating laser, not needing to realize the single polarization dual-wavelength fiber grating laser of Polarization Control, and the wavelength interval can be regulated.
A kind of separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser of the present invention constitutes being connected between each parts of this laser:
1) first Active Optical Fiber is connected by polarization-maintaining fiber grating with second Active Optical Fiber;
2) insert the first band optical fiber grating and the second band optical fiber grating at the other two ends of first Active Optical Fiber and second Active Optical Fiber, first and second band optical fiber grating reflection spectrum is spaced-apart, or more weak lap is arranged; On polarization-maintaining fiber grating, add adjuster, be used to regulate the reflection peak wavelength interval of polarization-maintaining fiber grating;
3), utilize coupler that first pump light and second pump light are coupled in the Active Optical Fiber respectively in the back of the first and second band optical fiber gratings.
4) two of polarization-maintaining fiber grating reflection peaks form the different wavelength of laser resonant cavity with the one the second band optical fiber gratings respectively, produce laser, in the first line style chamber or end, second line style chamber outputting dual wavelength laser.
The low at least 1dB of the reflectivity of the luminance factor polarization-maintaining fiber grating of the lap correspondence of band optical fiber grating reflection spectrum.
Polarization-maintaining fiber grating, the first and second band optical fiber gratings, two of three optical grating constitutions are laser cavity independently, and wherein two chambeies of polarization-maintaining fiber grating are shared.
Active Optical Fiber or for protecting inclined to one side Active Optical Fiber, Active Optical Fiber are er-doped or mix ytterbium or mix holmium or the ytterbium erbium is mixed or mixed thorium altogether or mixes praseodymium or neodymium-doped fiber.
Utilize temperature or/and stress is regulated the wavelength interval of polarization-maintaining fiber grating.
The reflection peak wavelength interval that changes polarization-maintaining fiber grating changes the single polarization dual-wavelength Wavelength of Laser interval of output.
Regulate the wavelength interval of two reflection peaks of polarization-maintaining fiber grating, the corresponding identical value of dual wavelength interval variation that produces.Realize the wavelength interval adjustment of output single polarization dual-wavelength laser output.
When pump light was coupled in the Active Optical Fiber, the reflection peak resonance of a polarization state of each broadband grating and polarization-maintaining fiber grating produced the laser of single polarization state.Each chamber is independently, and the laser that two chambeies produce can not be coupled mutually and form the problem of mode competition or polarization state change at random, the some wavelength output or the problems of two wavelength outputs at random also can not occur having only.Because band optical fiber grating reflection spectrum is spaced-apart, can not constitute resonant cavity.
Beneficial effect of the present invention is specific as follows:
The Active Optical Fiber that existing dual wavelength fibre laser needs is inclined to one side for protecting, coupler also will be protected inclined to one side, and add the output that Polarization Control, Polarization Detection guarantee dual wavelength single polarization fiber laser, perhaps need to eliminate at low temperatures mode competition, produce dual wavelength, and the wavelength interval cannot be regulated, reliability is low, the cost height, control is complicated, is difficult to practicality.
And the present invention adopts than protecting the much lower common Active Optical Fiber of inclined to one side Active Optical Fiber price as gain media, only needs a polarization-maintaining fiber grating, guarantees that each chamber resonance is on a polarization state.The laserresonator of each polarization state is independently, can eliminate conventional active polarization maintaining optical fibre and produce the problem of the mode competition of dual wavelength, the stochastic model coupling can not appear, cause the change at random of wavelength or polarization state, do not need Polarization Control, in order to obtain better laser quality, the present invention also can adopt Polarization Control to control polarization state.Because an end of fiber laser resonant cavity has adopted the grating in broadband, make it easier to quasi-resonance, reduced requirement, than the easier realization of common dual laser grating with the reflection peak of arrowband polarization maintaining optical fibre, export more stable single-polarization, have higher cost performance.Regulate the reflection peak wavelength interval of polarization-maintaining fiber grating, just can adjust the wavelength interval of the dual-wavelength laser of output, and the variation of the reflection peak wavelength interval of polarization-maintaining fiber grating, it is consistent changing with the wavelength interval of the dual-wavelength laser of being exported, i.e. the wavelength interval that the variation of the reflection peak wavelength interval of polarization-maintaining fiber grating equals the dual-wavelength laser exported changes.The present invention has reduced the coherence request to Active Optical Fiber, makes the inconsistent substantial influence that can not cause the single polarization dual-wavelength laser of characteristics such as Active Optical Fiber length, and has realized that with straightforward procedure the wavelength interval is tuning.The present invention also has little, compact conformation affected by environment, characteristics such as easy to implement.
Description of drawings
Fig. 1 is a separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser schematic diagram.
The fiber grating schematic diagram that Fig. 2 adopts for the separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser.
Fig. 3 for the separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser with single pump light implementation method schematic diagram.
Embodiment
Below in conjunction with accompanying drawing 1-3 and embodiment, separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser of the present invention is further described.
Embodiment 1:
The separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser constitutes being connected between each parts of this laser:
1) select first Active Optical Fiber 21 and second Active Optical Fiber, 22, the first Active Optical Fibers 21 of er-doped suitable length to be connected by polarization-maintaining fiber grating 11 with second Active Optical Fiber 22;
2) it is spaced-apart to insert the first band optical fiber grating 12 and the second band optical fiber grating, 13, the first and second band optical fiber grating reflection spectrum at the other two ends of first Active Optical Fiber 21 and second Active Optical Fiber 22, or more weak lap is arranged; On polarization-maintaining fiber grating 11, add adjuster 51, be used to regulate the reflection peak wavelength interval of polarization-maintaining fiber grating; The low at least 1dB of the reflectivity of the luminance factor polarization-maintaining fiber grating of the lap correspondence of band optical fiber grating reflection spectrum.
3), utilize coupler that first pump light 31 and second pump light 32 are coupled in the Active Optical Fiber respectively in the back of the first band optical fiber grating 12 and the second band optical fiber grating 13;
4) two of polarization-maintaining fiber grating 11 reflection peaks form the different wavelength of laser resonant cavitys with the first band optical fiber grating 12 and the second band optical fiber grating 13 respectively, produce laser, in the first line style chamber 41 or the second line style chamber, 42 end outputting dual wavelength lasers.
5) utilize adjuster 51, adopt the method for heating, regulate the reflection peak wavelength interval of polarization-maintaining fiber grating, the wavelength of laser cavity resonance is changed, the wavelength interval of dual-wavelength laser changes.Dual-wavelength laser interval variation value equals polarization-maintaining fiber grating reflection peak wavelength change value.30nm can be arrived for 0.1nm in the wavelength interval.
111 is a reflection peak of polarization-maintaining fiber grating among Fig. 2,112 is the another one reflection peak of polarization-maintaining fiber grating, and 121 is the reflection peak of the first band optical fiber grating 12, distinguishes with dotted line, 131 is the reflection peak of one second band optical fiber grating 13, distinguishes with dotted line.The reflection peak 111 of polarization-maintaining fiber grating and the first band optical fiber grating reflection peak 121, first Active Optical Fiber 21 constitute a resonant cavity, the another one reflection peak 112 of polarization-maintaining fiber grating and the second band optical fiber grating reflection peak 131, the second source optical fiber 22 constitute a resonant cavity, this two chambeies resonance under the effect of pumping laser, the laser of two single polarization wavelength of generation.
Embodiment 2:
1) selects to mix first of ytterbium suitable length and protect inclined to one side Active Optical Fiber 21 and the inclined to one side Active Optical Fiber 22 of second guarantor, the first inclined to one side Active Optical Fiber 21 of guarantor and second is protected inclined to one side Active Optical Fiber 22 usefulness polarization-maintaining fiber gratings 11 couple together.
2) insert the first band optical fiber grating 12 and the second band optical fiber grating 13 respectively at the first other two ends of protecting inclined to one side Active Optical Fiber 21 and the inclined to one side Active Optical Fiber 22 of second guarantor, two band optical fiber grating reflection spectrums are spaced-apart, there is not lap, or more weak lap is arranged, promptly the reflectivity of the luminance factor polarization-maintaining fiber grating of lap correspondence hangs down 1dB at least.
3), utilize coupler that first pump light 31 and second pump light 32 are coupled in the inclined to one side Active Optical Fiber of guarantor respectively in the back of the first band optical fiber grating 12 and the second band optical fiber grating 13.
4) two of polarization-maintaining fiber grating 11 reflection peaks form the different wavelength of laser resonant cavitys with two band optical fiber gratings respectively, produce laser, in the first line style chamber 41 or the second line style chamber, 42 end outputting dual wavelength lasers.
5) utilize adjuster 51, adopt the method for stress application, regulate the reflection peak wavelength interval of polarization-maintaining fiber grating, the wavelength of laser cavity resonance is changed, the wavelength interval of dual-wavelength laser changes.Dual-wavelength laser interval variation value equals polarization-maintaining fiber grating reflection peak wavelength change value.30nm can be arrived for 0.1nm in the wavelength interval.
111 is a reflection peak of polarization-maintaining fiber grating among Fig. 2, and 112 is the another one reflection peak of polarization-maintaining fiber grating, and 121 is the reflection peak of the first band optical fiber grating 12, distinguishes with dotted line, and 131 is the reflection peak of the second band optical fiber grating 13, distinguishes with dotted line.The reflection peak 111 of polarization-maintaining fiber grating and the first band optical fiber grating reflection peak 121, first Active Optical Fiber 21 constitute a resonant cavity, the another one reflection peak 112 of polarization-maintaining fiber grating and the second band optical fiber grating reflection peak 131, second Active Optical Fiber 22 constitute a resonant cavity, this two chambeies resonance under the effect of pumping laser, the laser of two single polarization wavelength of generation.
More than among two embodiment, the minimum length of protecting inclined to one side Active Optical Fiber is 1cm, maximum length is L.L is by the loss decision of pumping light power, doping content, laser cavity.Be that length L is exactly under 31 effects of given pump light, first protects the chamber that inclined to one side Active Optical Fiber 21, the first broadband grating 12 and polarization-maintaining fiber grating 11 constitute, and can just encourage the length of protecting inclined to one side Active Optical Fiber when producing laser is L1; Under given second pump light, 32 effects, the chamber that second Active Optical Fiber 22, the second broadband grating 13 and polarization-maintaining fiber grating 11 constitute, can just encourage the length of protecting inclined to one side Active Optical Fiber when producing laser is L2; L1 and L2 are exactly the maximum length L in each chamber.
Embodiment 3:
1) selects the ytterbium erbium to mix first Active Optical Fiber 21 and second Active Optical Fiber 22 of suitable length altogether, first Active Optical Fiber 21 and the second active light 22 usefulness polarization-maintaining fiber gratings 11 are coupled together.
2) insert the first band optical fiber grating 12 and the second band optical fiber grating 13 respectively at the other two ends of first Active Optical Fiber 21 and second Active Optical Fiber 22, two band optical fiber grating reflection spectrums are spaced-apart, there is not lap, or more weak lap is arranged, promptly the reflectivity of the luminance factor polarization-maintaining fiber grating of lap correspondence hangs down 1dB at least.
3), utilize coupler that first pump light 31 is distributed to optical splitter beam split arm 62 by the in-line arm 61 of optical splitter and beam split arm 63 is coupled in the Active Optical Fiber in the back of the first band optical fiber grating 12 and the second band optical fiber grating 13.
4) two of polarization-maintaining fiber grating 11 reflection peaks form the different wavelength of laser resonant cavitys with the first and second band optical fiber gratings 12 and 13 respectively, produce laser, in the first line style chamber 41 or the second line style chamber, 42 end outputting dual wavelength lasers.
5) two of polarization-maintaining fiber grating 11 reflection peaks form the different wavelength of laser resonant cavitys with the first band optical fiber grating 12 and the second band optical fiber grating 13 respectively, produce laser, in the first line style chamber 41 or the second line style chamber, 42 end outputting dual wavelength lasers.
6) utilize adjuster 51, adopt the method for heating and stress application, regulate the reflection peak wavelength interval of polarization-maintaining fiber grating, the wavelength of laser cavity resonance is changed, the wavelength interval of dual-wavelength laser changes.Dual-wavelength laser interval variation value equals polarization-maintaining fiber grating reflection peak wavelength change value.30nm can be arrived for 0.1nm in the wavelength interval.
111 is a reflection peak of polarization-maintaining fiber grating among Fig. 2, and 112 is the another one reflection peak of polarization-maintaining fiber grating, and 121 is the reflection peak of the first band optical fiber grating 12, distinguishes with dotted line, and 131 is the reflection peak of the second band optical fiber grating 13, distinguishes with dotted line.The reflection peak 111 of polarization-maintaining fiber grating constitutes a resonant cavity with band optical fiber grating reflection peak 121, first Active Optical Fiber 21, the another one reflection peak 112 of polarization-maintaining fiber grating and the second band optical fiber grating reflection peak 131, second Active Optical Fiber 22 constitute a resonant cavity, this two chambeies resonance under the effect of pumping laser, the laser of two single polarization wavelength of generation.
The Active Optical Fiber 21 and 22 of described suitable length, the minimum length of Active Optical Fiber are 1cm, and maximum length is L.L is by the loss decision of pumping light power, doping content, laser cavity.Be that length L is exactly under light 62 effects that the first given pump light 31 distributes, the chamber that Active Optical Fiber 21, the first broadband grating 12 and polarization-maintaining fiber grating 11 constitute, can just encourage the length of Active Optical Fiber when producing laser is L1; Under light 63 effects that the first given pump light 31 distributes, the chamber that second Active Optical Fiber 22, the second broadband grating 13 and polarization-maintaining fiber grating 11 constitute, can just encourage the length of Active Optical Fiber when producing laser is L2; L1 and L2 are exactly the maximum length L in each chamber.
The present invention proposes a kind of effective, reliable separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser, but the parts of system all are the parts of using always.
Claims (6)
1. the separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser is characterized in that, constitutes being connected between each parts of this laser:
1) first Active Optical Fiber (21) is connected by polarization-maintaining fiber grating (11) with second Active Optical Fiber (22);
2) insert the first band optical fiber grating (12) and the second band optical fiber grating (13) at the other two ends of first Active Optical Fiber (21) and second Active Optical Fiber (22), first and second band optical fiber grating reflection spectrum is spaced-apart, or more weak lap is arranged; On polarization-maintaining fiber grating (11), add adjuster (51), be used to regulate the reflection peak wavelength interval of polarization-maintaining fiber grating;
3) in the back of the first band fiber grating (12) and the second band optical fiber grating (13), utilize coupler that first pump light (31) and second pump light (32) are coupled in the Active Optical Fiber respectively;
4) two reflection peaks of polarization-maintaining fiber grating (11) form the different wavelength of laser resonant cavity with the first band optical fiber grating (12) and the second band optical fiber grating (13) respectively, produce laser, in the first line style chamber (41) or end, the second line style chamber (42) outputting dual wavelength laser.
2. separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser according to claim 1 is characterized in that, the low at least 1dB of the reflectivity of the luminance factor polarization-maintaining fiber grating of the lap correspondence of band optical fiber grating reflection spectrum.
3. according to claims 1 described separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser, it is characterized in that: polarization-maintaining fiber grating (11), the first band optical fiber grating (12), two of (13) three optical grating constitutions of the second band optical fiber grating are laser cavity independently, and wherein two chambeies of polarization-maintaining fiber grating are shared.
4. separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser according to claim 1, it is characterized in that: Active Optical Fiber or for protecting inclined to one side Active Optical Fiber, Active Optical Fiber are er-doped or mix ytterbium or mix holmium or the ytterbium erbium is mixed or mixed thorium altogether or mixes praseodymium or neodymium-doped fiber.
5. separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser according to claim 1 is characterized in that, utilizes temperature or/and stress is regulated the wavelength interval of polarization-maintaining fiber grating.
6. according to claims 1 described separate linetype cavity wavelength interval tunable single polarization dual wavelength fiber-grating laser, it is characterized in that: the reflection peak wavelength interval that changes polarization-maintaining fiber grating (11) changes the single polarization dual-wavelength Wavelength of Laser interval of output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101780458A CN100495835C (en) | 2007-11-26 | 2007-11-26 | Separate linetype cavity wavelength interval tunable single polarization dual wavelength optical fibre grating laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101780458A CN100495835C (en) | 2007-11-26 | 2007-11-26 | Separate linetype cavity wavelength interval tunable single polarization dual wavelength optical fibre grating laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101202409A true CN101202409A (en) | 2008-06-18 |
| CN100495835C CN100495835C (en) | 2009-06-03 |
Family
ID=39517432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101780458A Expired - Fee Related CN100495835C (en) | 2007-11-26 | 2007-11-26 | Separate linetype cavity wavelength interval tunable single polarization dual wavelength optical fibre grating laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100495835C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957479A (en) * | 2010-07-27 | 2011-01-26 | 中北大学 | Method for realizing output of optical microcavity coupling system by temperature modulation and coupling structure thereof |
| CN102269573A (en) * | 2011-05-03 | 2011-12-07 | 东华大学 | Quasi-distributed composite structure strain and temperature detection system |
| CN102361212A (en) * | 2011-10-27 | 2012-02-22 | 北京交通大学 | All-fiber thulium-holmium-codoped single mode fiber laser |
| WO2016095265A1 (en) * | 2014-12-19 | 2016-06-23 | 武汉光迅科技股份有限公司 | Arrayed waveguide grating based hybrid integrated laser having adjustable external cavity |
| CN106198455A (en) * | 2015-10-13 | 2016-12-07 | 北京信息科技大学 | A kind of solution refractive index measurement method based on thin-core fibers Mach-Zehnder interferometer |
| CN106248248A (en) * | 2015-10-13 | 2016-12-21 | 北京信息科技大学 | A kind of thermometry based on thin-core fibers Mach-Zehnder interferometer |
-
2007
- 2007-11-26 CN CNB2007101780458A patent/CN100495835C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101957479A (en) * | 2010-07-27 | 2011-01-26 | 中北大学 | Method for realizing output of optical microcavity coupling system by temperature modulation and coupling structure thereof |
| CN101957479B (en) * | 2010-07-27 | 2011-10-05 | 中北大学 | Method for realizing output of optical microcavity coupling system by temperature modulation and coupling structure thereof |
| CN102269573A (en) * | 2011-05-03 | 2011-12-07 | 东华大学 | Quasi-distributed composite structure strain and temperature detection system |
| CN102361212A (en) * | 2011-10-27 | 2012-02-22 | 北京交通大学 | All-fiber thulium-holmium-codoped single mode fiber laser |
| WO2016095265A1 (en) * | 2014-12-19 | 2016-06-23 | 武汉光迅科技股份有限公司 | Arrayed waveguide grating based hybrid integrated laser having adjustable external cavity |
| US10416379B2 (en) | 2014-12-19 | 2019-09-17 | Accelink Technologies Co., Ltd. | Arrayed waveguide grating based hybrid integrated laser having adjustable external cavity |
| CN106198455A (en) * | 2015-10-13 | 2016-12-07 | 北京信息科技大学 | A kind of solution refractive index measurement method based on thin-core fibers Mach-Zehnder interferometer |
| CN106248248A (en) * | 2015-10-13 | 2016-12-21 | 北京信息科技大学 | A kind of thermometry based on thin-core fibers Mach-Zehnder interferometer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100495835C (en) | 2009-06-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100420108C (en) | Traveling-wave lasers with a linear cavity | |
| CN101483308A (en) | Precise tunable multiple wavelength annular optical fiber laser | |
| CN100495835C (en) | Separate linetype cavity wavelength interval tunable single polarization dual wavelength optical fibre grating laser | |
| CN101483307A (en) | Polarization related outputting multiple wavelength and passive mode locking optical fiber laser | |
| CN102801091B (en) | Random fiber laser | |
| WO2020244130A1 (en) | Multimode interference effect-based widely tunable single-frequency fiber laser | |
| Feng et al. | Switchable multiwavelength erbium-doped fiber laser with a multimode fiber Bragg grating and photonic crystal fiber | |
| CN108574195A (en) | A kind of highly doped erbium doped fiber laser of the tunable multi-wavelength of stabilization | |
| CN1295822C (en) | Convertible dual-wavelength doping optical fiber laser | |
| Liu et al. | Switchable triple-wavelength erbium-doped fiber laser using a single fiber Bragg grating in polarization-maintaining fiber | |
| CN100423385C (en) | A linear resonant cavity wide narrow line tunable optical fiber laser | |
| CN100514772C (en) | Novel single-polarization multi-wavelength polarization-preserving sampling optical fiber optical grating laser | |
| CN108306166B (en) | Tunable fiber laser based on special fiber peanut knot | |
| CN201213194Y (en) | Linear cavity multiple wavelength dual path outputting optical fiber laser | |
| CN102610987A (en) | Switchable multi-wavelength erbium-doped optical fiber laser based on optical fiber Mach-Zehnder interferometer | |
| CN100499296C (en) | Common polarization maintaining optical fibre grating tunable single polarization dual wavelength optical fibre laser | |
| Guo et al. | Symmetric step-apodized distributed feedback fiber laser with improved efficiency | |
| CN2711951Y (en) | Composite cavity single longitudinal mode erbium doped optical fiber laser | |
| CN100481657C (en) | Realization method of linetype cavity single polarization dual wavelength optical fiber grating laser | |
| CN1556561A (en) | Wave length tunable narrow wire width, high signal noise ratio single polarization ring cavity full optical fiber laser | |
| CN100468890C (en) | Single polarization dual wavelength optical fiber grating laser realizing method | |
| CN105896250A (en) | Multi-wavelength multi-core fiber laser | |
| Liu et al. | Switchable dual-wavelength polarization-maintaining erbium-doped fiber laser using an optical circulator as the all-reflecting mirror | |
| Mao et al. | Incorporate, switchable dual-wavelength fiber laser with Bragg gratings written in a polarization-maintaining erbium-doped fiber | |
| CN109638625A (en) | Multi-wavelength tunable all-fiber pulse laser and system |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090603 Termination date: 20111126 |