CN103825166B - A kind of high-precision wide tunable single-frequency optical fiber laser - Google Patents
A kind of high-precision wide tunable single-frequency optical fiber laser Download PDFInfo
- Publication number
- CN103825166B CN103825166B CN201410049338.6A CN201410049338A CN103825166B CN 103825166 B CN103825166 B CN 103825166B CN 201410049338 A CN201410049338 A CN 201410049338A CN 103825166 B CN103825166 B CN 103825166B
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- laser
- frequency
- piezoelectric ceramics
- fiber
- 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.)
- Active
Links
Abstract
The invention provides a kind of high-precision wide tunable single-frequency optical fiber laser, including multicomponent glass optical fiber, band optical fiber grating or dichroic mirror, narrow band fiber bragg grating, wavelength division multiplexer, optoisolator, pumping source, laser frequency tuning device and heat sink, laser frequency tuning device is made up of PZT piezoelectric ceramics group and precision temperature control device.The present invention is based on the short straight F P linear resonance cavity configuration of multicomponent glass optical fiber so that laser instrument single longitudinal mode operates；The accurate temperature control technology of recycling and piezoelectric ceramics group drawing process combine and are adjusted laserresonator, can high accuracy, the frequency of wide scope and continous way tuned laser；In conjunction with all-fiber optical link structure, it is achieved the frequency-tunable single frequency fiber laser output of high tuning precision, broad tuning scope and high stability.The frequency tuning precision of the present invention reaches 800pm, power output more than 100mW, live width less than 10kHz less than 1MHz, tunable range.
Description
Technical field
The fields such as coherent light communication, laser ranging, Fibre Optical Sensor, laser Doppler velocimetry radar that the present invention relates to are applied
Fiber laser technology field, be specifically related to a kind of high tuning precision, the single frequency optical fiber laser of frequency wide tunable.
Background technology
Single frequency optical fiber laser exports with the form vibrating single longitudinal mode in referring to laser cavity, it is characterized by that laser spectrum live width is non-
Often narrow, can reach 10-8Nm, narrow 2 orders of magnitude than the live width of existing best narrow linewidth semiconductor DFB,
5～6 orders of magnitude narrower than the live width of DWDM signal optical source in current optical communication network.Narrow live width can ensure that laser
Having extraordinary coherence, its coherence length is up to several hundred kilometers.Owing to it has pole narrow linewidth, low noise, excellent
The characteristic such as relevant, it is widely used in coherent light communication, distance and high-precision sensing, laser ranging and instruction, Yi Jicai
The fields such as material technology.
Current research obtains more tunable single frequency laser, is usually and uses the highly doped silica fibre of rare earth ion or solid-state
Crystal as the gain media of single-frequency laser, insert in the optical path the low bulk-optic modulation crystal of reliability (electro-optic crystal,
Hot luminescent crystal or F-P etalon etc.) as maintaining single-frequency operation device or laser frequency adjusting means, take F-P linear
Chamber or Compound Cavity structure, but the concentration that all there is doping with rare-earth ions cannot improve further, resonator length is longer, appearance
The problems such as easy mode hopping, reliability are poor, general maximum can only directly export the single-frequency laser of tens mW magnitudes, and
Maximum difficult point is more difficult below the 10kHz that accomplishes of live width, and noise is relatively big, frequency tuning range less (being less than 100GHz), easily
Disturbed by external environment.
With multicomponent glass optical fiber as the gain media of laser, power output can be effectively realized and be more than 100mW, live width
Single frequency fiber laser output less than 10kHz.For example: use the Yb codoped phosphate glass optical fiber of 2cm length, it is achieved
Power output more than 200mW, live width less than the single frequency fiber laser output [J.Lightwave that 2kHz, wavelength are 1.5 μm
Technol.,2004,22:57].Use the ytterbium doped phosphate glasses optical fiber of 0.8cm length, it is achieved that power output is more than
Single frequency fiber laser output [Opt.Lett., 2011,36:18] that 400mW, live width are less than 7kHz, wavelength is 1.06 μm.This
Outward, 2005, University Of Shanxi applied for single frequency tuneable laser patent [publication number: CN1770574A], uses and mixes Nd
Solid crystal gain media and electro-optic crystal constitute laserresonator, it is achieved that laser frequency is tunable, but it is required
Single-frequency laser does not have all-fiber, live width is wider, reliability is poor.2011, American I PG company applied for height
Power narrow cable and wide optical fiber laser patent [publication number: US7903696B2], uses 2 ultrashort Simple Harmonics chambeies to export low work(
Rate narrow-linewidth single frequency laser signal, carries out two by common erbium-doped fiber amplifier and High Power Double-Clad Fiber Amplifiers respectively
Level laser power is amplified, but its required optical fiber laser does not have frequency-tunable feature.
Content of the invention
It is an object of the present invention to provide a kind of high-precision wide tunable single-frequency optical fiber laser.Use short straight F-P type single-frequency laser humorous
Resonator structure, it is utilized respectively the high gain characteristics of multicomponent glass optical fiber, the selecting frequency characteristic of narrow linewidth fiber grating, laser
The tuning characteristic of frequency tuning devices, on the premise of pumping source provides pumping (pumping) energy, regulates single-frequency laser resonance
Chamber, chamber length (resonant frequency of laser instrument with chamber grow up to certain corresponding relation), finally realize high tuning precision, wide tunable range,
High reliability, the continuous tuning single frequency fiber laser output of high stability.
The purpose of the present invention is achieved through the following technical solutions:
A kind of high-precision wide tunable single-frequency optical fiber laser, including multicomponent glass optical fiber (the highly doped multicomponent of rare earth ion
Glass optical fiber), band optical fiber grating, narrow band fiber bragg grating, wavelength division multiplexer, pumping source, optoisolator, heat sink and laser
Frequency tuning devices, wherein multicomponent glass optical fiber, band optical fiber grating, that narrow band fiber bragg grating collectively constitutes single-frequency laser is humorous
Shake chamber, and one end of band optical fiber grating is connected with one end of narrow band fiber bragg grating through multicomponent glass optical fiber, narrow band fiber bragg grating
The other end be connected with the common port of wavelength division multiplexer, the tail optical fiber of pumping source is connected with the pumping end of wavelength division multiplexer, and wavelength-division is multiple
Being connected with the input of optoisolator with the signal end of device, the output of optoisolator is as the final output port of single-frequency laser；
Described laser frequency tuning device includes PZT piezoelectric ceramics group and the precision temperature control being fixed in single-frequency laser resonator
Device, described piezoelectric ceramics group is made up of coarse adjustment PZT piezoelectric ceramics and fine tuning PZT piezoelectric ceramics, single-frequency laser resonator and pressure
Electroceramics group is placed on precision temperature control device, and all component package are in heat sink.
Optimizing further, the fibre core matrix components of the i.e. multicomponent glass optical fiber of laser working medium is phosphate glass, its group
Become 75P2O5-8Al2O3-10BaO-4La2O3-3Nd2O3；Host material includes but is not limited to phosphate glass, germanate glass
The component glass such as glass, tellurate glass, silicate glass.
Optimize further, the rare earth luminous ion of the fibre core Uniform Doped high concentration of described multicomponent glass optical fiber, described
Photoion is the combined situation of one or more in lanthanide ion, transition metal ions or other metal ions, and light emitting ionic is mixed
Miscellaneous concentration is more than 1 × 1019ions/cm3。
Optimizing further, the core shape of described multicomponent glass optical fiber is circle, and core diameter is 4～30 μm, covering shape
Shape is circle, and cladding outer diameter is 80～440 μm.
Optimizing further, the connection between described multicomponent glass optical fiber, band optical fiber grating and narrow band fiber bragg grating couples
Mode is: each fiber end face of grinding and polishing carries out mechanical splice coupling；Or connect coupling by optical fiber splicer is melted.
Optimizing further, described pumping source is semiconductor laser, optical fiber laser or other solid-state lasers, its pump
Pumping wavelength scope 700～1600nm, its output pump power is more than 50mW；Output tail optical fiber type is single-mode fiber.
Optimizing further, pump mode is: the described other end that the tail optical fiber of pumping source connects band optical fiber grating carries out forward direction
Pumping；Or the pump light that pumping source sends is coupled into narrow band fiber bragg grating via wavelength division multiplexer and carries out backward pump；Or
The two directional pump that person is carried out by above two mode simultaneously.
Further, described band optical fiber grating uses dichroic mirror to replace, and described band optical fiber grating or dichroic mirror are to pump light
Thewavelengthtransmittance is more than 85%；90% is more than to laser signal optical wavelength reflectivity；Described narrow band fiber bragg grating is to laser signal
Optical wavelength fractional transmission, the reflectivity of its central wavelength is between 20～90%；Described dichroic mirror is thin for plating at cavity mirror face
Film or at one end fiber end face plated film of multicomponent glass optical fiber.
Further, the coarse adjustment PZT piezoelectric ceramics in piezoelectric ceramics group and fine tuning PZT piezoelectric ceramics are as entirety optical cement
It is fixed on the side of multicomponent glass optical fiber, or the band optical fiber grating side of silica fibre one end, or narrow band fiber together
The grating side of silica fibre one end, or the side of narrow band fiber bragg grating；Or coarse adjustment PZT piezoelectric ceramics and fine tuning PZT
Piezoelectric ceramics is independently separated into single individuality, is separately fixed at the side of multicomponent glass optical fiber, band optical fiber light with optical cement
The grid side of silica fibre one end, the side of narrow band fiber bragg grating silica fibre one end, narrow band fiber bragg grating side in
Certain two placement location any, the permutation and combination number of i.e. independent modes of emplacement separately is
Optimize further, require inclined to applying corresponding direct current in piezoelectric ceramics group according to fiber-draw change in laserresonator
Put voltage, resonator length is regulated in real time；Unit voltage output shift quantity D of described coarse adjustment PZT piezoelectric ceramics1
Unit voltage output shift quantity D more than fine tuning PZT piezoelectric ceramics2, coarse adjustment PZT piezoelectric ceramics changes for fiber-draw
Significantly thick step joint, fine tuning PZT piezoelectric ceramics is for the little scope fine adjustments of fiber-draw change, by coarse adjustment PZT
Piezoelectric ceramics realizes high tuning precision and high tuning speed with the composition complementary of fine tuning PZT piezoelectric ceramics, and both are combined mutually
Mend, the requirement of different tuning precision, different tuned speed, wide scope and continuous tuning can be met.
Above-mentioned rare earth ion highly doped phosphate glass optical fiber, as the working media of single-frequency laser, has high gain characteristics, its
Specifically used length can according to laser output power size, live width size, the reflection spectrum width etc. of narrow band fiber bragg grating require into
Row selects, and generally uses length and is only 0.5～25cm, can realize the laser output of hundreds of mW power.
Above-mentioned Effect of Back-Cavity Mirror is taken on by band optical fiber grating or dichroic mirror (optional), and wherein dichroic mirror is for plating at cavity mirror face
Film or at one end end face coating of rare earth doping phosphoric acid salt glass optical fiber.
Optimizing further, the other end end face of described band optical fiber grating is ground and is polished to inclined-plane or a bit of nothing of welding
Core fibre, for preventing the light of fiber end face from reflecting.
Above-mentioned single-frequency laser resonator by rare earth doping phosphoric acid salt glass optical fiber, band optical fiber grating or dichroic mirror (optional),
Narrow band fiber bragg grating is constituted, and encapsulates laserresonator and piezoelectric ceramics group and is placed in an independent precision temperature control device (thermoelectricity
Refrigerator TEC) above carry out precision temperature regulation change resonator long, its temperature control precision ± 0.01 DEG C.
Above-mentioned laser frequency tuning device is collectively formed by piezoelectric ceramics group and precision temperature control device, wherein in piezoelectric ceramics group
Upper applying DC offset voltage, its key parameter unit voltage output shift quantity determines tuning precision and required regulation voltage
Value, can require its given accordingly magnitude of voltage size of regulation according to fiber-draw change (change in displacement) in laserresonator,
Then resonator is changed long.
All component package on a slotted metal is heat sink, are effectively dispelled the heat by the present invention, solve frequency-tunable single-frequency
Fuel factor problem during laser works, ensures the Stability and dependability of its power output, laser frequency further.
Compared with prior art, the present invention has the following technical effect that and advantage:
The present invention is using the multicomponent glass optical fiber of centimetres as laser working medium, and laserresonator is by multicomponent glass light
Fibre, band optical fiber grating or dichroic mirror (optional), narrow band fiber bragg grating form together, wherein narrow band fiber bragg grating and broadband
Fiber grating or dichroic mirror (optional) constitute chamber mirror before and after short F-P cavity structure.Under the continuous pumping of pumping source, many groups
Divide the rare earth luminous ion in glass optical fiber fibre core to present population inversion, produce stimulated radiation flashlight, at resonant cavity mirror
Feedback effect under, flashlight repeatedly vibrates back and forth and is repeatedly amplified, and finally produce single-frequency laser output.Due to humorous
Chamber, chamber length of shaking only has centimetres, and the longitudinal mode spacing in chamber is up to GHz, when the 3dB reflectance spectrum of narrow band fiber bragg grating is narrow extremely
0.08nm, only exists single longitudinal mode (single-frequency) operating in can realizing laser cavity.
Laserresonator and piezoelectric ceramics group are encapsulated and are placed in above an independent temperature controller, carry out precision temperature regulation,
Owing to temperature change causes the reflection wavelength of fiber grating and the change of resonator length, the change of laser frequency can be caused
(skew), i.e. can realize the fine-tuning of Output of laser frequency；Additionally, again by piezoelectric ceramics group with loading bias voltage value
Change and produce and elongate or shorten effect, and make resonator length change, it is also possible to cause the change of Output of laser frequency,
So that laser resonance frequency obtains continous way tuning, and its tuning range is simple linear changing relation with applied voltage.
Especially coarse adjustment PZT piezoelectric ceramics and fine tuning PZT piezoelectric ceramics has the displacement of different accuracy, is combined complementation, uses
In the arbitrariness regulation requirement to resonator length.
For the simplification of problem analysis, only considering the regulation effect to resonator length for the piezoelectric ceramics group here, temperature is adjusted
The joint impact on resonator length simultaneously is temporarily ignored.From Principles of Laser: laser resonance frequency and resonator grow up to one
Determining corresponding relation, the change Δ L of laser resonance longitudinal mode frequency ν interval delta ν and the long L of resonator meets simple relation formula:(wherein k is a proportionality coefficient, its value normally close to 1).Frequency tuning range is equal to the longitudinal mode of resonator
Interval, the long general control in laserresonator chamber in the present invention is at below 2cm, if taking L=2 × 10-2M and k=1, it is assumed that
1064nm signal laser (ν=2.82 × 105GHz), when the change of Δ L(resonator length) change 7 μm, can obtain
The frequency tuning range of 100GHz, selects coarse adjustment PZT piezoelectric ceramics 10 μm/150V of unit voltage displacement.Assume
The voltage resolution of power supply used is 0.1V, selects fine tuning PZT piezoelectric ceramics 1 μm/2000V of unit voltage displacement
Obtain 0.7MHz(be less than 1MHz) frequency tuning precision.
Therefore, use short straight F-P type single-frequency laser cavity resonator structure, in conjunction with laser frequency tuning technology, can obtain to a high-profile
Humorous precision, high tuning speed, broad tuning scope, live width kHz magnitude, the output of stable tunable single-frequency optical-fiber laser.
Brief description
Fig. 1 be PZT piezoelectric ceramics group as overall be fixed on band optical fiber grating silica fibre one end side when schematic diagram.
Fig. 2 is PZT piezoelectric ceramics group as schematic diagram when being integrally attached to narrow band fiber bragg grating silica fibre one end side.
Fig. 3 is PZT piezoelectric ceramics group as schematic diagram when being integrally attached to narrow band fiber bragg grating side.
Fig. 4 is a kind of modes of emplacement schematic diagram that PZT ceramic component opens as single two individualities.
Fig. 5 is a kind of modes of emplacement schematic diagram that PZT ceramic component opens as single two individualities.
Fig. 6 is a kind of modes of emplacement schematic diagram that PZT ceramic component opens as single two individualities.
Fig. 7 is a kind of modes of emplacement schematic diagram that PZT ceramic component opens as single two individualities.
Fig. 8 is high-precision wide tunable single-frequency optical fiber laser principle schematic in embodiment.
In figure: 1 multicomponent glass optical fiber (ytterbium doped phosphate glasses optical fiber), 2 coarse adjustment PZT piezoelectric ceramics, 3 fine tunings
PZT piezoelectric ceramics, 4 band optical fiber gratings, 5 narrow band fiber bragg gratings, 6 precision temperature control devices, 7 wavelength-division multiplex
Device (WDM), 8 pumping sources, 9 optoisolators, 11 band optical fiber grating silica fibres, 12 narrow band fiber light
Grid silica fibre, 13 is heat sink.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the invention will be further described, it should be noted that application claims
The scope of protection is not limited to the scope of embodiment statement.
In the embodiment of the present invention, PZT piezoelectric ceramics group has different modes of emplacements.As shown in Figures 1 to 3, Fig. 1 is PZT piezoelectricity
Pottery group is as overall a kind of modes of emplacement schematic diagram, and its modes of emplacement is for being fixed on band optical fiber grating silica fibre one
The side of end.The modes of emplacement of Fig. 2 is the side being fixed on narrow band fiber bragg grating silica fibre one end.The placement side of Fig. 3
Formula is to be fixed on the side of narrow band fiber bragg grating.
PZT piezoelectric ceramics group is as the overall side (Fig. 1) being fixed on band optical fiber grating silica fibre 11 one end together；
Or it is fixed on the side (Fig. 2) of narrow band fiber bragg grating silica fibre 12 one end；Or it is fixed on the side of narrow band fiber bragg grating 5
Face (Fig. 3).
As also shown in e.g. figs. 4-7, PZT piezoelectric ceramics group is individual as separate single one or two, and wherein coarse adjustment PZT piezoelectric ceramics is fixed on
The band optical fiber grating side of silica fibre one end, fine tuning PZT piezoelectric ceramics is fixed on the side of ytterbium doped phosphate glasses optical fiber
Face (such as Fig. 4)；Or coarse adjustment PZT piezoelectric ceramics is fixed on the side of ytterbium doped phosphate glasses optical fiber, fine tuning PZT piezoelectricity is made pottery
Porcelain is fixed on the side (Fig. 5) of narrow band fiber bragg grating silica fibre one end.Or coarse adjustment PZT piezoelectric ceramics is fixed on narrow band light
The fine grating side of silica fibre one end, fine tuning PZT piezoelectric ceramics is fixed on the side (Fig. 6) of narrow band fiber bragg grating.Or
Coarse adjustment PZT piezoelectric ceramics is fixed on the side of band optical fiber grating silica fibre one end, and fine tuning PZT piezoelectric ceramics is fixed on
The narrow band fiber bragg grating side (Fig. 7) of silica fibre one end.
In the present invention, coarse adjustment PZT piezoelectric ceramics and fine tuning PZT piezoelectric ceramics composition piezoelectric ceramics group carry out the regulation of resonator,
The piezoelectric ceramics modes of emplacement enumerated in above example is only typical case, and the difference carrying out due to aforesaid way is arranged two-by-two
Row combined situation, total modes of emplacement number of combinations 12 kindsEmbodiments thereof also has a lot, does not enumerates, but
Every piezoelectric ceramics by two kinds of functions is placed in single-frequency optical fiber laser resonant cavity the tunable mode constituting and belongs to the present invention
The scope of protection.
As shown in Figure 8, for high-precision wide tunable single-frequency optical fiber laser principle schematic in the embodiment of the present invention, ytterbium will be mixed
Phosphate glass optical fiber (i.e. multicomponent glass optical fiber 1) is as the gain media of laser, by narrow band fiber bragg grating 5 and broadband
Fiber grating 4 forms chamber mirror before and after short straight F-P cavity structure.Band optical fiber grating 4 is to the transmissivity of pump wavelength and right
The reflectivity of laser signal optical wavelength is respectively the 98%th, 99%, and the other end of band optical fiber grating 4 is ground and is polished to tiltedly
Piezoelectric ceramics group is directly fixed on the side of ytterbium doped phosphate glasses optical fiber by face with optical cement.Wherein, narrow band fiber bragg grating
The center reflection wavelength of 5 is positioned at the gain spectral of gain medium, and is positioned within the high reflectance spectrum of Effect of Back-Cavity Mirror, reflection
Rate is 75%, and general reflectivity is between 20～90%.By the 3dB reflection spectrum width of accurate control fiber grating, middle cardiac wave
Whole single-frequency laser resonator length is controlled at below 2cm by the critical optical parameter such as length, reflectivity size, grid region length,
Can ensure that in the case that the reflectance spectrum live width of narrow band fiber bragg grating 5 is less than 0.08nm, in laser cavity, only exist a Dan Zong
Mould (single-frequency) operates, and occurs without mode hopping and mode competition phenomenon.Wherein the fibre core of ytterbium doped phosphate glasses optical fiber mainly becomes
It is divided into phosphate glass (component: 75P2O5-8Al2O3-10BaO-4La2O3-3Nd2O3), and Uniform Doped high concentration in fibre core
Ytterbium ion (doping content is 5.0 × 1020ions/cm3), its core diameter and cladding diameter are respectively 6 μm, 125 μm.Its
Use length can select according to the reflection spectrum width etc. of laser output power size, live width size and narrow band fiber bragg grating,
This example uses a length of 1.2cm.
Wherein pump mode uses backward pump, i.e. pumping source 8 injects pump light, is coupled into narrow via wavelength division multiplexer 7
Band fiber grating 5, in the fibre core of the ytterbium doped phosphate glasses optical fiber 1 being then input in laserresonator, makes ytterbium ion send out
Raw population inversion, produces the laser signal of stimulated radiation, and flashlight, under the feedback effect of front Effect of Back-Cavity Mirror, repeatedly shakes back and forth
Swinging and effectively being amplified, with the continuous enhancing of pump power, single-frequency laser live width will constantly narrow, finally can be real
Existing single frequency fiber laser output.It is fixed on laserresonator by built-in for PZT piezoelectric ceramics group (by ytterbium doped phosphate glasses optical fiber
1st, band optical fiber grating the 4th, narrow band fiber bragg grating 5 is constituted), then both are placed in together an independent precision temperature control device 6
Above, utilize precision temperature change regulation laserresonator chamber long, it is possible to achieve to export the fine-tuning of single-frequency laser frequency；Again
Make resonator produce further with piezoelectric ceramics group with the biasing voltage signal applying and elongate or shorten change, it is possible to achieve
The continuously adjustable of output single-frequency laser frequency.Owing to combining the coarse adjustment PZT piezoelectric ceramics 2 and fine tuning PZT of different adjustment precision
Piezoelectric ceramics 3 constitutes piezoelectric ceramics group, and in this example, coarse adjustment PZT piezoelectric ceramics unit voltage displacement selects 10 μm/150V,
Fine tuning PZT piezoelectric ceramics unit voltage displacement selects 1 μm/2000V.Behaviour is tuned to the short laser cavity length of centimetres
Make, the single-frequency laser output of high tuning precision, high tuning speed, broad tuning bandwidth can be realized, and its tunable range is with institute
Applying voltage is simple linear change, it is easy to control operation.
Therefore, the short straight F-P cavity single-frequency laser cavity resonator structure based on ytterbium doped phosphate glasses optical fiber is used, in conjunction with precision
Temperature control technology and the two ore control to resonator for the piezoelectric ceramics group drawing process are regulated, and can effectively realize single frequency fiber laser frequency
The continuously adjustable operation of rate, it is thus achieved that frequency tuning precision reaches 800pm(about 100GHz less than 1MHz, tuning bandwidth),
Power output exports less than all-fiber single-frequency laser of the frequency wide tunable form of 10kHz more than 100mW, laser linewidth.
Finally the output of frequency wide tunable single frequency fiber laser signal is connected with the input of optoisolator 9, by optoisolator
The output of 9 is as the output port of final single frequency fiber laser, and all components and parts are fixing is encapsulated in a slotted metal material heat
Actively dispel the heat in heavy 13, it is to avoid the heat history in work.
Claims (10)
1. a high-precision wide tunable single-frequency optical fiber laser, it is characterised in that include multicomponent glass optical fiber (1), broadband
Fiber grating (4), narrow band fiber bragg grating (5), wavelength division multiplexer (7), pumping source (8), optoisolator (9), heat sink
And laser frequency tuning device, wherein multicomponent glass optical fiber, band optical fiber grating, common group of narrow band fiber bragg grating (13)
Becoming single-frequency laser resonator, one end of band optical fiber grating is connected with one end of narrow band fiber bragg grating through multicomponent glass optical fiber,
The other end of narrow band fiber bragg grating is connected with the common port of wavelength division multiplexer, the pumping end of the tail optical fiber of pumping source and wavelength division multiplexer
Connecting, the signal end of wavelength division multiplexer is connected with the input of optoisolator, and the output of optoisolator is as single-frequency laser
Whole output port；Described laser frequency tuning device includes PZT piezoelectric ceramics group and the essence being fixed in single-frequency laser resonator
Close temperature controller (6), described PZT piezoelectric ceramics group is by coarse adjustment PZT piezoelectric ceramics (2) and fine tuning PZT piezoelectric ceramics
(3) forming, single-frequency laser resonator and piezoelectric ceramics group are placed on precision temperature control device (6), all component package
In heat sink.
2. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that laser working medium is
The fibre core matrix components of multicomponent glass optical fiber (1) is phosphate glass, consisting of
75P2O5-8Al2O3-10BaO-4La2O3-3Nd2O3。
3. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that described multicomponent glass
The light emitting ionic of the fibre core Uniform Doped high concentration of optical fiber (1), described light emitting ionic is lanthanide ion, transition metal ions
In the combined situation of one or more, light emitting ionic doping content be more than 1 × 1019ions/cm3。
4. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that described multicomponent glass
The core shape of optical fiber (1) is circle, and core diameter is 4～30 μm, and cladding shape is circle, and cladding outer diameter is 80～440 μm.
5. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that described multicomponent glass
Connection coupled modes between optical fiber (1), band optical fiber grating (4) and narrow band fiber bragg grating (5) are: grinding and polishing is each
Fiber end face carries out mechanical splice coupling；Or connect coupling by optical fiber splicer is melted.
6. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that described pumping source (8)
Being semiconductor laser or optical fiber laser, its pump-wavelength range 700～1600nm, its output pump power is more than
50mW。
7. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that pump mode is: pump
The described other end that the tail optical fiber in source, Pu (8) connects band optical fiber grating (4) carries out forward pumping；Or pumping source (8) is sent out
The pump light going out is coupled into narrow band fiber bragg grating (5) via wavelength division multiplexer (7) and carries out backward pump；Or by above-mentioned
The two directional pump that two ways is carried out simultaneously.
8. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that described band optical fiber light
Grid (4) use dichroic mirror to replace, and described band optical fiber grating (4) or dichroic mirror are more than 85% to pump wavelength transmissivity；
90% is more than to laser signal optical wavelength reflectivity；Described narrow band fiber bragg grating (5) to laser signal optical wavelength fractional transmission,
The reflectivity of its central wavelength is between 20～90%；Described dichroic mirror is for plating film or at multicomponent at cavity mirror face
One end fiber end face plated film of glass optical fiber (1).
9. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that PZT piezoelectric ceramics
Coarse adjustment PZT piezoelectric ceramics (2) in group and fine tuning PZT piezoelectric ceramics (3) are many as being fixed on together with entirety optical cement
The side of component glass optical fiber (1), or the band optical fiber grating side of silica fibre (11) one end, or narrow band fiber light
The grid side of silica fibre (12) one end, or the side of narrow band fiber bragg grating (5)；Or coarse adjustment PZT piezoelectric ceramics
(2) it and fine tuning PZT piezoelectric ceramics (3) is independently separated into single individuality, is separately fixed at multicomponent glass light with optical cement
The side of fibre, the band optical fiber grating side of silica fibre (11) one end, narrow band fiber bragg grating silica fibre (12)
The side of one end, narrow band fiber bragg grating (5) side in certain two placement location any, i.e. independent modes of emplacement separately
Permutation and combination number is
10. high-precision wide tunable single-frequency optical fiber laser as claimed in claim 1, it is characterised in that according to laser resonance
Fiber-draw change in chamber requires to apply corresponding DC offset voltage in PZT piezoelectric ceramics group, carries out reality to resonator length
When regulation；Unit voltage output shift quantity D of described coarse adjustment PZT piezoelectric ceramics1More than fine tuning PZT piezoelectric ceramics (3)
Unit voltage output shift quantity D2, coarse adjustment PZT piezoelectric ceramics is for the significantly thick step joint of fiber-draw change, fine tuning
PZT piezoelectric ceramics (3) is for the little scope fine adjustments of fiber-draw change, by coarse adjustment PZT piezoelectric ceramics and fine tuning
The composition complementary of PZT piezoelectric ceramics realizes high tuning precision and high tuning speed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410049338.6A CN103825166B (en) | 2014-02-12 | 2014-02-12 | A kind of high-precision wide tunable single-frequency optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410049338.6A CN103825166B (en) | 2014-02-12 | 2014-02-12 | A kind of high-precision wide tunable single-frequency optical fiber laser |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103825166A CN103825166A (en) | 2014-05-28 |
| CN103825166B true CN103825166B (en) | 2016-10-05 |
Family
ID=50760091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410049338.6A Active CN103825166B (en) | 2014-02-12 | 2014-02-12 | A kind of high-precision wide tunable single-frequency optical fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103825166B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104466635A (en) * | 2014-11-30 | 2015-03-25 | 华南理工大学 | Single frequency fiber laser with high frequency stability |
| CN104466636A (en) * | 2014-11-30 | 2015-03-25 | 华南理工大学 | Single-frequency Q-switched pulsed fiber laser |
| CN105071207B (en) * | 2015-08-31 | 2018-09-14 | 华南理工大学 | Frequency modulation(PFM) single frequency optical fiber laser based on self-injection locking |
| CN106207747A (en) * | 2016-08-24 | 2016-12-07 | 深圳新飞通光电子技术有限公司 | Parallel tunable laser module and the method realizing the compensation of each interchannel frequency fine tuning thereof |
| CN106785843A (en) * | 2017-01-18 | 2017-05-31 | 浙江工贸职业技术学院 | A kind of fine tunable single-frequency short cavity optical fiber laser of frequency |
| CN110718840A (en) * | 2019-11-01 | 2020-01-21 | 威海北洋光电信息技术股份公司 | High-precision tunable all-fiber single-frequency laser |
| CN115939913A (en) * | 2023-03-10 | 2023-04-07 | 深圳英谷激光有限公司 | Fiber laser with tunable wavelength and tuning method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306897A (en) * | 2011-08-22 | 2012-01-04 | 华南理工大学 | Ultra narrow linewidth low noise high power single frequency fiber laser |
| CN202183551U (en) * | 2011-09-05 | 2012-04-04 | 苏州图森激光有限公司 | Single longitudinal mode and narrow line width fiber laser |
| CN103337778A (en) * | 2013-03-08 | 2013-10-02 | 华南理工大学 | Frequency modulating single frequency fiber laser |
| CN203387041U (en) * | 2013-05-08 | 2014-01-08 | 江苏天元激光科技有限公司 | Fiber grating Q-switched pulse fiber laser |
| CN203871644U (en) * | 2014-02-12 | 2014-10-08 | 华南理工大学 | High-precision width tunable single frequency fiber laser |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6940877B2 (en) * | 2003-05-30 | 2005-09-06 | Np Photonics, Inc. | High-power narrow-linewidth single-frequency laser |
-
2014
- 2014-02-12 CN CN201410049338.6A patent/CN103825166B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306897A (en) * | 2011-08-22 | 2012-01-04 | 华南理工大学 | Ultra narrow linewidth low noise high power single frequency fiber laser |
| CN202183551U (en) * | 2011-09-05 | 2012-04-04 | 苏州图森激光有限公司 | Single longitudinal mode and narrow line width fiber laser |
| CN103337778A (en) * | 2013-03-08 | 2013-10-02 | 华南理工大学 | Frequency modulating single frequency fiber laser |
| CN203387041U (en) * | 2013-05-08 | 2014-01-08 | 江苏天元激光科技有限公司 | Fiber grating Q-switched pulse fiber laser |
| CN203871644U (en) * | 2014-02-12 | 2014-10-08 | 华南理工大学 | High-precision width tunable single frequency fiber laser |
Non-Patent Citations (1)
| Title |
|---|
| 光纤光栅主动稳频的短直线腔单频光纤激光器;杨飞等;《中国激光》;20120930;第39卷(第9期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103825166A (en) | 2014-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103825166B (en) | A kind of high-precision wide tunable single-frequency optical fiber laser | |
| CN103956638B (en) | A kind of tunable narrow-linewidth single-frequency linearly polarized laser device | |
| CN103825167B (en) | Continuously-tunable single-frequency optical fiber laser | |
| CN101447637B (en) | Single longitudinal-mode optical fiber laser with low noise, narrow linewidth and high power | |
| US6826335B1 (en) | Multi-fibre arrangements for high power fibre lasers and amplifiers | |
| JP4574861B2 (en) | Gain flattening in fiber amplifiers. | |
| CN103022864A (en) | Tunable narrow-linewidth array single-frequency fiber laser | |
| CN103337778A (en) | Frequency modulating single frequency fiber laser | |
| CN205609949U (en) | Adjustable frequency spaced optical frequency comb generation system based on encircle resonant cavity a little | |
| CN104466636A (en) | Single-frequency Q-switched pulsed fiber laser | |
| CN107248690B (en) | A kind of mixing lumen type dual wavelength narrow cable and wide optical fiber laser | |
| CN108551075A (en) | A kind of high-order mode Brillouin laser that all -fiber transverse mode is changeable | |
| Halder et al. | Wideband spectrum-sliced ASE source operating at 1900-nm region based on a double-clad ytterbium-sensitized thulium-doped fiber | |
| CN105140764B (en) | A kind of tunable broad band ASE light sources | |
| CN203871644U (en) | High-precision width tunable single frequency fiber laser | |
| CN104051938A (en) | Optical fiber laser device | |
| CN105703208A (en) | Multi-wavelength tunable laser based on polarization-maintaining chirped phase-shift fiber grating | |
| CN203871645U (en) | Low-noise polarization-maintaining single-frequency fiber laser | |
| CN108988106A (en) | Controllable multiple-wavelength fiber external cavity laser based on super surface external cavity mirror | |
| CN108418086A (en) | A kind of all -fiber high-order mode Brillouin optical fiber laser | |
| CN104092086A (en) | Super-narrow-linewidth single-frequency Q-switched pulse fiber laser | |
| CN203288929U (en) | Frequency modulation single-frequency fiber laser | |
| CN204067842U (en) | A kind of continuously adjustable single frequency optical fiber laser | |
| CN103825180B (en) | A kind of low noise protects inclined single frequency optical fiber laser | |
| CN1138322C (en) | Ring optical fiber Q-switching laser |
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 | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230728 Address after: 519031 room 105-24877, No.6 Baohua Road, Hengqin New District, Zhuhai City, Guangdong Province (centralized office area) Patentee after: HENGQIN FIRAY SCI-TECH CO.,LTD. Address before: 510640 No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: SOUTH CHINA University OF TECHNOLOGY |