CN101969174A - Tunable all-fiber mode-locked laser - Google Patents
Tunable all-fiber mode-locked laser Download PDFInfo
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Abstract
The invention discloses a tunable all-fiber mode-locked laser. A fiber laser structure with high repetition rate, high power, simple structure and high efficiency is generated by utilizing rare-earth doped fiber as a laser gain medium, working in a total positive dispersion region, splitting light by a polarising beam splitter, utilizing a band pass tunable long period fiber grating filter as mode-locked laser center wavelength selection and the spectrum filter light impulse compression of the mode-locked laser, and semiconductor saturable absorber as a mode-locked element and the like. The tunable all-fiber mode-locked laser is a mode-locked ultra short laser pulse laser capable of realizing all fiber with environmental stability and novel structure, can output picosecond and femtosecond light impulse polarization laser with laser wavelength more than 1mu m, and can be widely applied in the fields of biology, medication, optical precision finishing and the like.
Description
Technical field
The present invention relates to a kind of tunable optical fiber laser, be particularly related to a kind of tunable passive mode locking full-optical-fiber laser with high pulse repetition rate ultrashort laser pulse output, be applicable to and produce stable tunable ultrashort laser pulse, be widely used in medical imaging, biologic applications and optical precision measurement etc. belong to the optical information technical field.
Background technology
Wavelength stabilized tunable ultra-short pulse source plays an important role in high speed wavelength division multiplexing/Optical Time Division Multiplexing communication system.The ultrashort pulse fiber laser that adopts diode pumped with respect to the conventional laser system at heat radiation, stability, beam quality, transformation efficiency, volume reaches and aspects such as existing system compatibility, adjusting have significant advantage, is superpower laser to miniaturization, an important directions of curing and integrated development entirely.Along with developing rapidly of Fibre Optical Communication Technology, mix Er
3+Fiber amplifier and mix Er
3+Fiber-optical ultrashort pulse laser has obtained extensive and deep research, and the commercialization product of superior performance also comes out.Mix the ytterbium silica fiber and have very wide absorption spectra (800nm～1064nm) and emission spectra (975nm～1200nm) because of it, high power saturation factor, high conversion efficiency, can carry out high-concentration dopant and not have concentration quenching under high doping, have very big gain bandwidth simultaneously and can support transform limit pulse, and in the gain media of high-power, high-energy ultrashort pulse fiber laser, enjoy favor less than 30fs.Be operated near the ytterbium-doping optical fiber laser of 1 μ m and can be used as the high-energy ultra-short pulse source that is applicable to extensive application, particularly very attractive as the pumping source of optical parametric oscillator.
Fiber laser is subjected to people's favor because of characteristics such as its unique waveguiding structure has simply, high efficiency, firm, light weight, integrated, high reliability, high stabilities.In recent years, the high-power fiber ultrashort light pulse laser technology based on the optical-fiber laser technology has obtained develop rapidly.
Document " High energy femtosecond fiber lasers based on pulse propagation at normal dispersion " (Frank W.Wise et al,, Laser ﹠amp; Photonics.Rev.2, No.1-2,58-73,2008) in, reported about being operated in the Y that mixes in Totally positive dispersion district
b 3+The optical-fiber laser technology makes the ultrashort pulse fiber laser technology of output macro-energy, Stability Analysis of Structures, practicability stride forward major step.Although because the Totally positive dispersion cavity makes this mode locked fiber laser output have the picosecond laser pulse of positive in a large number linear Zhou pond, but can obtain the macro-energy femto-second laser pulse of transform limit outside the employing chamber after the chromatic dispersion compression, certainly because this laser adopts the mechanism of spectral filtering light pulse compression to make the spectral bandwidth of laser output be subjected to certain restriction.But, therefore be subjected to the attention of academia because this laser structure is simplified and can be realized full fiberize and export the light pulse of picosecond macro-energy locked mode.
In recent years, about mixing in the Yb fiber laser Totally positive dispersion cavity mode-locked, spectral filtering is in the formation of mode-locked laser pulse with to the influence of mode locked fiber laser stability, as at document " Spectral filtering for mode locking in the normal dispersive regime " (B.G.Bale et al, Opt Lett., Vol.33, No, 9,2008,941) and " Properties of normal dispersion femtosecond fiber lasers " (A.Chong et al, J.O.S.A (B), Vol.25, No.2,2008,140) appear in the newspapers in, spectral filtering plays in Totally positive dispersion modelocked fiber laser cavity producing pinch effect from the light pulse of phase modulated pulse stretching, simultaneously in the chamber from amplitude modulation(PAM) generation effect, stability to mode-locked laser plays a part very key, and the spectral filtering that can think fit is the key technology of Totally positive dispersion mode locked fiber laser from starting of oscillation and stable mode-locking work.Existing open source literature report rotate the Y that mixes of mechanism at the annular chamber nonlinear polarization as 2006 and U.S. Cornell university in 2007
b 3+The spectral filtering sheet that adopts the birefringence quartz plate of the interferometric filter of 4～12nm bandwidth or different-thickness to constitute in the optical-fiber laser has been realized stable locked mode concussion (A.Chong et al, All Normal dispersion femtosecond fiber laser, Optics Express, Vol.14, No.21,2006,10095; A.Chong et al., All Normal dispersion femtosecond fiber laser with pulses energy above 20nJ, Optics letters, Vol.32, No.16,2007,2408; K.Kieu et al.; Sub-100fs pulses at watt-level powers from a dissipative-soliton fiber laser; Opt Lett.; Vol.34; No.5; 2009,539), 2007～2008 years US Naval Research Laboratories and the German Han Luowei Han Luowei of university laser also adopt similar locked mode mechanism the Totally positive dispersion annular chamber mix Y
b 3+Optical-fiber laser has realized that (wherein the naval laboratory is adopted and placed interferometric filter in the Totally positive dispersion annular chamber in the locked mode vibration, and German laser Han Luowei has adopted the optical fibre wavelength division multiplexer (WDM) of particular design to realize principle (the Janet W.Lou et al. that semiconductor saturable absorber starts in pulse compression and the chamber as spectral filter in the chamber respectively, Experimental measurements of soliton pulse characteristics from an all normal dispersion Yb-doped fiber laser, Optics Express, Vol.15, No.8,2007,4960; O.Prochnow et al., All fiber similariton laser at 1 μ m without dispersion compensation, Optics Express, Vol.15, No.11,2007,6889; Michael Schultz et al, All fiber Ytterbium femtosecond laser without dispersion compensation, Optics Express, Vol.16, No.24,2008,19562)).Totally positive dispersion to ambient stable adopts all risk insurance to mix Y partially
b 3+The mode-locked laser of optical fiber, U.S. Cornell university utilized the online property of semiconductor saturable absorber locked mode mechanism chamber guarantor to mix Y partially in 2008
b 3+Adopt the spectral filtering sheet of the birefringence quartz plate formation of 12nm to realize stable locked mode vibration (A.Chong et al. in the optical-fiber laser, Environment stable all normal-dispersion femtosecond fiber laser, Optics letters, Vol.33, No.10,2008,1071).Laser engineering research institute of Osaka, Japan university in 2006 adopts the full polarization fibre annular-type cavity to mix the Yb fiber laser is not had tuning mode-locked laser output (the K.Sumimura et al of chamber internal dispersion compensation realization, Environmentally-stable mode-locked Yb fiber laser composed of all polarization maintaining fiber with a broad tuning range, OSA/CLEO 2006, CThJ4.pdf).Mix Y partially and adopt in recent years to protect
b 3+The mode-locked laser of optical fiber as Germany and Denmark etc., also adopt the chamber internal dispersion compensate as diffraction grating to or photonic crystal fiber, or adopt reflective Zhou pond fiber grating (CFBG) as output coupler and dispersion compensator (T.Schreiber et al, Microjoule level all-polarization-maintaining femtosecond fiber source, Optics letters, Vol.31, No.5,2006,574; C.K.Nielsen et al., Self-starting self-similar all polarization maintaining Yb-doped fiber laser, Optics Express, Vol.13, No.23,2005,9346; B.Ortac et al, Experimental and numerical study of pulses dynamics in positive net cavity dispersion mode-locked Yb-doped fiber lasers, Optics Express, Vol.15, No.23,2007,15595; Dmitry et al., Monolithic all PM femtosecond Yb-fiber laser stabilized with a narrow-band fiber Bragg grating and pulses-compressed in a hollow core photonic crystal fiber, Optics Express, Vol.16, No.18,2008,14004).But the locked mode in the work of the Totally positive dispersion district of above-mentioned present report is mixed in the Yb fiber laser, the Zhou pond Fiber Bragg Grating FBG (CFBG) that has adopted the interferometric filter of non-fiberize or reflection-type in the chamber is as chamber face speculum or outgoing mirror, these elements or influence the full fiberize of cavity, or influence the design of laser cavity.
At document " Long-Period Fiber-Grating-Based Filter for Generation of Picosecond and Subpicosecond Transform-Limited Flat-Top Pulses " (Radan Slav í k et al., IEEE PHOTONICS TECHNOLOGY LETTERS, VOL.20, NO.10,2008,806) and document " Long period gratings written in Large mode photonic crystal fiber " (D.Nodop et.al., Appl.Physics.B, 92,2008,509-512), to logical type fiber grating (the Long Period Grating of long period band, LPG) filter studies show that, adopt the logical type fiber grating filter of long period band as mode-locked laser pulse compression and optical maser wavelength filter element, make the possibility that is designed to of the full optical fiber mode-locked laser that is operated in the Totally positive dispersion cavity.Chinese invention patent " Totally positive dispersion cavity mode-locked all-fiber laser " (CN101740995A) in, propose to utilize long period fiber grating to obtain the passive mode locking full-optical-fiber laser of Totally positive dispersion cavity as filter; Wherein, long period fiber grating is only as band pass filter, because the logical wave band of band is untunable, so the mode-locked laser wavelength of realizing does not have tuning characteristic yet, output wavelength is more single, has influenced the scope of application of laser.
Can be referring to document " Asymmetric long period fiber gratings fabricated by use of CO for long period fiber grating to the tunable characteristic research of temperature and stress
2Laser to carve periodic grooves on the optical fiber " (Yi-Ping Wang et al., APPLIED PHYSICS LETTERS, 89,2006,151105-151107).But the design that is applied to the tunable whole-optical fiber mode-locked laser of Totally positive dispersion cavity does not appear in the newspapers.
Relevant tunable Totally positive dispersion cavity mode-locked fiber laser technology, can be referring to document Tunable All-normal-dispersion Yb-doped Mode-locked Fiber Lasers (Lingjie Kong, Xiaosheng Xiao, and Changxi Yang, OSA/CLEO/IQEC, 2009), a kind of technology that adopts the birefringence eyeglass to carry out wavelength regulation is wherein disclosed, the employing of this technology has influenced the full fiberize of laser cavity, thereby influenced the long-time stability of mode locked fiber laser, and crystal may cause involving great expense of laser to influence its scope of application outside the chamber owing to having used.Relate to the mode-locked laser technology, also can be referring to document as Jian Liu, Ultrshort Stable Mode-locked Fiber Laser At One Micron By Using Polarization Maintaining (PM) Fiber and Photonic Bandgap Fiber (PBF), US Patent, US2008/0151945A1, Hong Lin, Wavelength Tunable, Polarization Stable Mode-locked Fiber Laser, World International Property Organization, PCT/US00/19170,2001 and O.Okhotnikov et al, A Mode-Locked Fiber Laser, World International Property Organization, PCT/FI2006/050184,2006 etc.Above-mentioned technology has adopted and has been operated in the dispersion region notion, have in the chamber solid diffraction grating to or the photon band-gap optical fiber grating carry out dispersion compensation etc., thereby this full fiberize that has also influenced laser cavity has influenced the long-time stability of mode locked fiber laser, perhaps very expensive its scope of application that influences of the cost of laser.
Summary of the invention
In order to overcome the deficiency that prior art exists, the invention provides a kind of Totally positive dispersion district that is operated in, no chromatic dispersion compensating element, is realized full fiberize, practicability, the tunable whole-optical fiber mode-locked laser of output intensity laser pulse.
The technical solution used in the present invention provides a kind of tunable whole-optical fiber mode-locked laser, it is the non-polarization-maintaining fiber coil die cavity of the ultrashort pulse laser that is operated in the Totally positive dispersion district, comprises pump laser, wavelength division multiplexer, single mode doped gain fiber, monomode fiber, a logical type long period fiber grating system of the tunable band of single mode and optical fiber coupling polarization beam apparatus of a monomode fiber coupling isolator, optical fiber polarization controller, band optical fiber coupling output; Its structure is:
An optical fiber polarization controller is connected with the monomode fiber coupling isolator, and isolator guarantees the unidirectional formation laser generation of optic fiber ring-shaped cavity, and optical fiber polarization controller is regulated and control chamber inner laser polarization;
The signal input part of wavelength division multiplexer is connected with optical fiber polarization controller;
The pump laser of band optical fiber coupling output is connected with the pumping laser input of wavelength division multiplexer, in pumping laser coupled into optical fibres loop laser chamber;
One end of single mode doped gain fiber mixes end with the signal laser of wavelength division multiplexer/pumping laser and is connected, and the single mode doped gain fiber produces the signal laser gain under pumping laser;
One end of one section general single mode fiber is connected with the other end of single mode doped gain fiber;
One end of a logical type long period fiber grating system of the tunable band of single mode is connected with the other end of a section single-mould fiber;
One end of another optical fiber polarization controller is connected with the other end of the logical type long period fiber grating system of the tunable band of single mode, and optical fiber polarization controller is regulated and control chamber inner laser polarization;
The input optical fibre end of the polarization beam apparatus of an optical fiber coupling is connected with the other end of optical fiber polarization controller;
The input of monomode fiber coupling isolator is connected with an output optical fiber of optical fiber coupling polarization beam apparatus; constitute a unidirectional loop fiber laser cavity, another output optical fiber of optical fiber coupling polarization beam apparatus is as the output port of locked mode annular cavity laser.
The tunable band of single mode of the present invention leads to type long period fiber grating system, and the centre wavelength of its fiber grating is 1.0～1.1 μ m, and bandwidth is 4～20nm; The scope of tuned long period optical fiber grating centre wavelength is 0～12nm.Described single mode doped gain fiber is common single mode rare earth doped fiber, or mixes rare earth big core diameter single-mode optical fiber for what adopt the pumping of two multiple layer, or for mixing the big core diameter single-mode photonic crystal fiber of rare earth; The described rare earth of mixing is for mixing Nd
3+Or Yb
3+
Compared with prior art, the present invention has the tangible advantage of several respects:
1, the present invention adopts the tunable band of single mode to lead to the type long period fiber grating in the annular chamber mode locked fiber laser, whole laser works is in the Totally positive dispersion district, no free space dispersion compensation device or photonic crystal dispersion compensating fiber in the chamber, realized full optical fiber integration structure, this means more stable, the more practicability, and exportable bigger pulsed laser energy of laser cavity.
2, in the annular chamber mode locked fiber laser, adopt the logical type long period fiber grating of the tunable band of single mode, work as temperature, stress, when concentration etc. change, the logical wavelength of the band of long period fiber grating changes, thereby the output wavelength of mode-locked laser is changed, and realizes tunable.Make laser design more simplify.
3, adopt the logical type long period fiber grating of the tunable band of single mode in the annular chamber mode locked fiber laser, because the long period fiber grating cost of manufacture is low, manufacture craft is simple relatively, has reduced the cost of manufacture of Optical Maser System.
4, in the annular chamber mode locked fiber laser, adopt the logical type long period fiber grating of the tunable band of single mode because long period fiber grating itself in the natural compatibility of optical fiber, can be born very big laser power, be useful for high-power, high-octane mode-locked laser.
Description of drawings
Fig. 1 is the structural representation of a kind of tunable mode-locked laser of providing of the embodiment of the invention;
Among the figure: 1, the 976nm or the 915nm pumping laser (source) of band optical fiber coupling output; 2,976/1060nm or 915/1064nm wavelength division multiplexer; 3, common single mode is mixed Y
b 3+Gain fibre; 4, the logical type long period fiber grating system of the tunable band of single mode; 5, wavelength is the 1um monomode fiber; 6 (9), optical fiber polarization controller; 7, optical fiber coupling polarization beam apparatus; 8, monomode fiber coupling isolator.
Embodiment
Below in conjunction with drawings and Examples the present invention is further described.
Embodiment one
Present embodiment provides a kind of locked mode that is operated in the Totally positive dispersion annular chamber to mix Y
b 3+Fiber laser, promptly in laser cavity, the chromatic dispersion of all fiber optic components all is a normal dispersion.
It adopts one section single mode to mix the rare earth gain fibre as gain media, used in its chamber suitable centre wavelength (1.0～1.1 μ m), bandwidth (4～20nm) and the tunable wave length scope (the logical type long period optical fiber grating filter of 0～12nm) band is selected as mode-locked laser centre wavelength and the element of the spectral filtering shaping of light pulse and compression, realizes that full fiber-optical ultrashort pulse laser stable mode-locking vibrates.
Referring to accompanying drawing 1, it is the structural representation of a kind of tunable mode-locked laser of providing of present embodiment; It adopts the full-optical-fiber laser cavity body structure of the annular chamber locked mode of nonlinear polarization rotation effect realization to show, has utilized the element of the logical type long period optical fiber grating filter of suitable centre wavelength and tunable band as the selection of mode-locked laser centre wavelength and the spectral filtering shaping of light pulse and compression in the chamber.Pumping laser is coupled into the single mode rare earth doped optical fibre by wavelength division multiplexer (WDM) and produces gain, adopted the element of the logical type long period band general character fiber grating filter of tunable band of suitable bandwidth in the laser chamber as the selection and the spectral filtering light pulse compression of laser centre wavelength, the isolator of an optical fiber coupling is guaranteed the unidirectional vibration of fiber laser, two optical fiber polarization controllers are adjusted the polarization direction of fiber laser endovenous laser, polarization beam apparatus is as the output coupler of mode-locked laser, gain fibre, tunable band leads to the type long period optical fiber grating filter, isolator, two optical fiber polarization controllers, the nonlinear polarization rotation saturable absorber of the laser that polarization beam apparatus is formed produces stable mode locking pulse.When the logical type long period optical fiber grating filter wavelength of tunable band realizes that when tunable, the output wavelength of mode-locked laser realizes tunable.
As seen from Figure 1, the concrete annexation of this tunable mode-locked laser is:
The 976nm of band optical fiber coupling output or 915nm pumping laser (source) 1 are coupled into single mode by 976/1060nm or 915/1064nm wavelength division multiplexer (WDM) 2 and mix Y
b 3+Gain fibre 3 produces gain, and a suitable centre wavelength is that 1.02 μ m～1.04um, bandwidth are that 10nm, tunable wave length scope are for (the logical type long period fiber grating system 4 of 0～12nm) tunable band is that 1um monomode fiber 5 is mixed Y with single mode by one section wavelength
b 3+Gain fibre 3 connects; an optical fiber polarization controller 6 is connected with the logical type long-period gratings system 4 of tunable band; the effect of optical fiber polarization controller 6 is to adjust the endovenous laser polarization state and produce saturable absorber with other device to produce mode-locked laser pulse; the polarization beam apparatus 7 of an optical fiber coupling is connected with optical fiber polarization controller 6 and constitutes exports the variable laser output mouth of ratio; a monomode fiber coupling isolator 8 is connected with the polarization beam apparatus 7 of optical fiber coupling; the effect of monomode fiber coupling isolator 8 is to guarantee the unidirectional vibration of circular cavity optic fibre laser; another optical fiber polarization controller 9 is connected with monomode fiber coupling isolator 8, and the effect of optical fiber polarization controller 9 is to adjust the polarization state of annular chamber inner laser and form the saturable absorber that passive mode locking produces ultrashort laser pulse with other device.Optical fiber polarization controller 9,976/1060nm or 915/1064nm wavelength division multiplexer (WDM) 2, single mode are mixed Y
b 3+Gain fibre 3, wavelength are that polarization beam apparatus 7, the monomode fiber coupling isolator 8 of the logical type long period fiber grating system 4 of 1um monomode fiber 5, the tunable band of single mode, optical fiber polarization controller 6, optical fiber coupling constitutes a laser that utilizes nonlinear polarization rotation lock mould annular chamber; the logical type long period fiber grating system 4 of the tunable band of single mode produces intracavity wavelengths and selects and the spectral filtering shaping of light pulse and compressions, and two optical fiber polarization controllers 6 and 9, single mode are mixed Y
b 3+The polarization beam apparatus 7 generation nonlinear polarization rotations of gain fibre 3, the logical type long period optical fiber grating filter 4 of tunable band, optical fiber coupling can be satisfied and be closed the absorber locked mode.
In the present embodiment, the logical type long-period gratings system of tunable band is as the element of selection and the spectral filtering shaping of light pulse and the compression of laser centre wavelength, and its structure, control method and operation principle can be referring to document " Asymmetric long period fiber gratings fabricated by use of CO
2Laser to carve periodic grooves on the optical fiber " (APPLIED PHYSICS LETTERS; 89; 2006; 151105-151107); document discloses and adopted the long period fiber grating of firing success to carry out the adjusting of gravitation (promptly by one section weighting material method at grating); thus grating cycle of long-period gratings changed, reach the purpose of tunable wavelength.Under the effect of stress, the transmission peak wavelength of grating changes to 1559.58 from 1569.93, and tunable range reaches 10.35nm, increases stress once more and can reach 12nm.
In the present embodiment, the output wavelength of the logical type long-period gratings system of tunable band, the output wavelength scope of control laser, therefore, can obtain the tunability of laser output wavelength by regulating the logical wavelength of band of long period fiber grating in the logical type long period fiber grating system of tunable band.In present embodiment, the logical wave-length coverage of long period fiber grating band is 1030～1042nm, and the tuning range of then exporting pulse laser wavelength is 1030～1042nm.
Claims (3)
1. tunable whole-optical fiber mode-locked laser, it is characterized in that: it is the non-polarization-maintaining fiber coil die cavity of the ultrashort pulse laser that is operated in the Totally positive dispersion district, comprises pump laser [1], wavelength division multiplexer [2], single mode doped gain fiber [3], monomode fiber [5], a logical type long period fiber grating system [4] of the tunable band of single mode and optical fiber coupling polarization beam apparatus [7] of a monomode fiber coupling isolator [8], optical fiber polarization controller [6,9], band optical fiber coupling output; Its structure is:
An optical fiber polarization controller [9] is connected with monomode fiber coupling isolator [8], and isolator guarantees the unidirectional formation laser generation of optic fiber ring-shaped cavity, and optical fiber polarization controller [9] is regulated and control chamber inner laser polarization;
The signal input part of wavelength division multiplexer [2] is connected with optical fiber polarization controller [9];
The pump laser [1] of band optical fiber coupling output is connected with the pumping laser input of wavelength division multiplexer [2], in pumping laser coupled into optical fibres loop laser chamber;
One end of single mode doped gain fiber [3] mixes end with the signal laser/pumping laser of wavelength division multiplexer [2] and is connected, and single mode doped gain fiber [3] produces the signal laser gain under pumping laser;
One end of one section general single mode fiber [5] is connected with the other end of single mode doped gain fiber [3];
One end of a logical type long period fiber grating system [4] of the tunable band of single mode is connected with the other end of a section single-mould fiber [5];
One end of another optical fiber polarization controller [6] is connected with the other end of the logical type long period fiber grating system [4] of the tunable band of single mode, and optical fiber polarization controller [6] is regulated and control chamber inner laser polarization;
The input optical fibre end of the polarization beam apparatus [7] of an optical fiber coupling is connected with the other end of optical fiber polarization controller [6];
The input of monomode fiber coupling isolator [8] is connected with an output optical fiber of optical fiber coupling polarization beam apparatus [7]; constitute a unidirectional loop fiber laser cavity, another output optical fiber of optical fiber coupling polarization beam apparatus [7] is as the output port of locked mode annular cavity laser.
2. a kind of tunable whole-optical fiber mode-locked laser according to claim 1 is characterized in that: the tunable band of described single mode leads to type long period fiber grating system [4], and the centre wavelength of its fiber grating is 1.0～1.1 μ m, and bandwidth is 4～20nm; The scope of tuned long period optical fiber grating centre wavelength is 0～12nm.
3. a kind of tunable whole-optical fiber mode-locked laser according to claim 1, it is characterized in that: described single mode doped gain fiber [3] is common single mode rare earth doped fiber, or mix rare earth big core diameter single-mode optical fiber, or for mixing the big core diameter single-mode photonic crystal fiber of rare earth for what adopt the pumping of two multiple layer; The described rare earth of mixing is for mixing Nd
3+Or Yb
3+
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253452A (en) * | 2011-06-24 | 2011-11-23 | 天津理工大学 | Tunable microwave photon band pass filter based on multi-wavelength fiber laser |
| CN103855598A (en) * | 2014-03-21 | 2014-06-11 | 山东理工大学 | Multiple wavelength convertible tunable fiber laser based on tapered fiber |
| CN108646333A (en) * | 2018-07-02 | 2018-10-12 | 苏州龙格库塔光电科技有限公司 | Super model interference filter and fiber optic wavelength tunable mode-locked laser |
| US10101467B2 (en) | 2016-08-11 | 2018-10-16 | Secretary, Department Of Atomic Energy, Government Of India | Optical rare-earth doped fiber long period grating based ionizing radiation dose sensor device |
| CN109449732A (en) * | 2018-11-14 | 2019-03-08 | 哈尔滨工程大学 | A kind of novel Q modulation dual wavelength fibre laser based on rare-earth doped optical fibre |
| CN113964634A (en) * | 2021-09-29 | 2022-01-21 | 华东师范大学重庆研究院 | Electric control tuning non-reciprocal phase shifter and polarization filter |
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| CN1556561A (en) * | 2003-12-31 | 2004-12-22 | 南开大学 | Wave length tunable narrow wire width, high signal noise ratio single polarization ring cavity full optical fiber laser |
| CN200990472Y (en) * | 2006-12-05 | 2007-12-12 | 任建华 | Ring cavity optical fiber laser |
| CN101740995A (en) * | 2009-12-11 | 2010-06-16 | 苏州大学 | Totally positive dispersion cavity mode-locked all-fiber laser |
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| CN1556561A (en) * | 2003-12-31 | 2004-12-22 | 南开大学 | Wave length tunable narrow wire width, high signal noise ratio single polarization ring cavity full optical fiber laser |
| CN200990472Y (en) * | 2006-12-05 | 2007-12-12 | 任建华 | Ring cavity optical fiber laser |
| CN101740995A (en) * | 2009-12-11 | 2010-06-16 | 苏州大学 | Totally positive dispersion cavity mode-locked all-fiber laser |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102253452A (en) * | 2011-06-24 | 2011-11-23 | 天津理工大学 | Tunable microwave photon band pass filter based on multi-wavelength fiber laser |
| CN103855598A (en) * | 2014-03-21 | 2014-06-11 | 山东理工大学 | Multiple wavelength convertible tunable fiber laser based on tapered fiber |
| US10101467B2 (en) | 2016-08-11 | 2018-10-16 | Secretary, Department Of Atomic Energy, Government Of India | Optical rare-earth doped fiber long period grating based ionizing radiation dose sensor device |
| CN108646333A (en) * | 2018-07-02 | 2018-10-12 | 苏州龙格库塔光电科技有限公司 | Super model interference filter and fiber optic wavelength tunable mode-locked laser |
| CN109449732A (en) * | 2018-11-14 | 2019-03-08 | 哈尔滨工程大学 | A kind of novel Q modulation dual wavelength fibre laser based on rare-earth doped optical fibre |
| CN113964634A (en) * | 2021-09-29 | 2022-01-21 | 华东师范大学重庆研究院 | Electric control tuning non-reciprocal phase shifter and polarization filter |
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Application publication date: 20110209 |