CN107171167A - 977nm lasing light emitters based on full-optical fiber optical parametric oscillator - Google Patents
977nm lasing light emitters based on full-optical fiber optical parametric oscillator Download PDFInfo
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- CN107171167A CN107171167A CN201710560107.5A CN201710560107A CN107171167A CN 107171167 A CN107171167 A CN 107171167A CN 201710560107 A CN201710560107 A CN 201710560107A CN 107171167 A CN107171167 A CN 107171167A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06712—Polarising fibre; Polariser
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06741—Photonic crystal fibre, i.e. the fibre having a photonic bandgap
Abstract
The present invention provides a kind of 977nm lasing light emitters based on full-optical fiber optical parametric oscillator, pumping source is used as using the 1064.1nm optical fiber lasers of high-quality, frequency transformation is realized using the four-wave mixing effect in photonic crystal fiber, 977nm high light beam quality single-mode laser output has been obtained.The characteristics of present invention has high simple in construction, volume compact, reliability, strong robustness, has important application value in scientific research, engineering technology.
Description
Technical field
The present invention relates to Fiber laser technology field, it is specifically related to a kind of based on full-optical fiber optical parametric oscillator
977nm lasing light emitters.
Background technology
The laser of 977nm wave bands can be used for pumping doping Yb3+、Er3+Optical fiber laser, in scientific research, engineering technology
In have important value.
The mainly realization, semiconductor laser output beams in the form of semiconductor laser of the laser of this current wave band
Beam quality it is poor, it is difficult to realize single-mode laser export.Optical parametric oscillator technology can realize laser frequency conversion, reason
Exported by the laser that can above obtain this wave band, however, optical parametric oscillator common at present is based in optical crystal
Nonlinear effect realize frequency transformation, it is difficult because phase matched, effective nonlinear coefficient and optics pass through the limitation of wave band
To obtain effective nonlinear optical crystal, the optical parametric oscillator based on nonlinear crystal, it is difficult to realize 977nm wave bands
Laser is exported.Moreover, requirement of the optical parametric oscillator based on crystal to light path calibration is very high, light channel structure is complicated, reliably
Property is poor.
Fiber-optic parametric oscillator is a kind of optical parametric oscillator technology emerging in recent years, based on four in optical fiber
Wave mixing effect (FWM) realizes frequency transformation, and the laser of any wavelength can be produced in theory.But, current optical fiber Optical Parametric
Amount oscillator is also not carried out the laser output of 977nm wave bands, and is still used in existing fiber-optic parametric oscillator
Some discrete optical elements are, it is necessary to fine optical path adjusting and calibration, complicated, poor reliability.
The content of the invention
In order to solve the technical problem, full-optical fiber optical parametric oscillator is based on it is an object of the invention to provide one kind
977nm lasing light emitters.
The present invention provides a kind of 977nm lasing light emitters based on full-optical fiber optical parametric oscillator, including for producing center
Wavelength is 1064.1nm, and breadth of spectrum line is 0.1nm, and polarization extinction ratio is more than 15dB, and average output power is more than the light of 5W laser
Fibre laser, the first wavelength division multiplexer, photonic crystal fiber, the second wavelength division multiplexer, coupler and delay optical fiber,
The optical fiber laser, first wavelength division multiplexer, the photonic crystal fiber, second wavelength-division multiplex
Sequentially light path is connected for device, the coupler and the delay optical fiber, the delay optical fiber and the first wavelength division multiplexer light path
Connection；
The coupler, the delay optical fiber, the optical fiber laser, the tail optical fiber of first wavelength division multiplexer and described
The tail optical fiber of second wavelength division multiplexer is model：PM 980 polarization-maintaining single-mode fiber；
The service band of first wavelength division multiplexer is 977nm and 1064nm, in 977nm wave bands from P1 ports to P2 ports
Insertion loss is less than 0.5dB, is less than 0.5dB in insertion loss of the 1064nm wave bands from P1 ports to P3 ports；
The service band of second wavelength division multiplexer is 977nm and 1064nm, in 977nm wave bands from P1 ports to P2 ports
Insertion loss is less than 0.5dB, is less than 0.5dB in insertion loss of the 1064nm wave bands from P1 ports to P3 ports；
The photonic crystal fiber is model：The big mode field area polarization of LMA-PM-5 2.5m length keeps photonic crystal light
It is fine；
The coupler is 90 in the splitting ratio that 977nm wave bands lead directly to arm and coupling arm:10；
The delay fiber lengths are 6.5m.
Further, the spectroanalysis instrument of optical maser wavelength produced by for detecting, the coupler and the light are included
Spectrometer light path is connected.
Further, spectroanalysis instrument is near-infrared spectrometers, and its wavelength cover is 700~1200nm, ripple
Long resolution ratio is 0.02nm, and dynamic range is 80dB.
Further, the P1 ports phase welding of the output optical fibre of optical fiber laser and first wavelength division multiplexer, welding
Loss is less than 0.2dB；The P3 ports of first wavelength division multiplexer and one end phase welding of the photonic crystal fiber, welding are damaged
Consumption is less than 1dB；The P1 ports phase welding of the other end of the photonic crystal fiber and second wavelength division multiplexer, splice loss, splice attenuation
Less than 1dB；The P2 ports of second wavelength division multiplexer lead directly to one end phase welding of arm with the coupler, and splice loss, splice attenuation is less than
0.2dB；
The coupler leads directly to one end phase welding of the other end and the delay optical fiber of arm, and splice loss, splice attenuation is less than 0.2dB；
The P4 ports phase welding of the other end and first wavelength division multiplexer of the delay optical fiber, splice loss, splice attenuation is less than 0.2dB.
The technique effect of the present invention：
1st, the present invention provides the 977nm lasing light emitters based on full-optical fiber optical parametric oscillator, by by fiber-optic parametric
Oscillator technique, photonic crystal fiber technology and fiber laser technology are combined together, and build the Optical Parametric of all optical fibre structure
Measure oscillator, it is possible to achieve 977nm high light beam quality single-mode laser output, at the same there is simple in construction, volume compact, it is reliable
Property high, heat management the characteristics of facilitate.
2nd, the 977nm lasing light emitters based on full-optical fiber optical parametric oscillator that the present invention is provided, using all optical fibre structure, profit
With the four-wave mixing effect in photonic crystal fiber, the optical-fiber laser of 1064nm wave bands effectively can be converted to 977nm's
Single-mode fiber laser.
3rd, the 977nm lasing light emitters based on full-optical fiber optical parametric oscillator that the present invention is provided, fiber-optic parametric vibration
Device uses all optical fibre structure, not using discrete component, independent of nonlinear crystal, without adjusting light path, with structure letter
List, volume compact, reliability are high, with low cost, strong robustness the characteristics of.
4th, the 977nm lasing light emitters based on full-optical fiber optical parametric oscillator that the present invention is provided are exported using single-mode fiber,
Ensureing the 977nm laser of output has very high beam quality.
It is specific to refer to according to the various of the proposition of the 977nm lasing light emitters based on full-optical fiber optical parametric oscillator of the invention
Embodiment it is described below, will cause apparent in terms of the above and other of the present invention.
Brief description of the drawings
Fig. 1 is the 977nm laser source configurations schematic diagrames based on full-optical fiber optical parametric oscillator that the present invention is provided；
Fig. 2 is the parametric gain schematic diagram of full-optical fiber optical parametric oscillator in the preferred embodiment of the present invention；
Fig. 3 is the output spectrum schematic diagram of full-optical fiber optical parametric oscillator in the preferred embodiment of the present invention.
Marginal data：
1st, optical fiber laser；2nd, the first wavelength division multiplexer (977/1064)；3rd, photonic crystal fiber (LMA-PM-5)；4th,
Two wavelength division multiplexers (977/1064)；5th, coupler (90:10)；6th, delay optical fiber (PM980)；7th, spectroanalysis instrument.
Embodiment
The accompanying drawing for constituting the part of the application is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not constitute inappropriate limitation of the present invention.
The 977nm lasing light emitters based on full-optical fiber optical parametric oscillator provided referring to Fig. 1, the present invention, including：For producing
Raw centre wavelength is 1064.1nm, and breadth of spectrum line is 0.1nm, and polarization extinction ratio is more than 15dB, and average output power is more than 5W's
Optical fiber laser 1, the first wavelength division multiplexer 2, photonic crystal fiber 3, the second wavelength division multiplexer 4, coupler 5 and delay optical fiber 6.
Optical fiber laser 1 is connected with the light path of the first wavelength division multiplexer 2.First wavelength division multiplexer 2 and photonic crystal fiber 3, the second wavelength-division
Sequentially light path is connected for multiplexer 4, coupler 5 and delay optical fiber 6.Delay optical fiber 6 is connected with the light path of the first wavelength division multiplexer 2.For
The wavelength of laser produced by detection, coupler 5 is connected with the light path of spectroanalysis instrument 7.
Coupler 5, delay optical fiber 6, optical fiber laser 1, the tail optical fiber of the first wavelength division multiplexer 2 and the second wavelength division multiplexer 4
Tail optical fiber be model：PM 980 polarization-maintaining single-mode fiber；
The service band of first wavelength division multiplexer 2 is 977nm and 1064nm, in 977nm wave bands from P1 ports to P2 ports
Insertion loss be less than 0.5dB, insertion loss of the 1064nm wave bands from P1 ports to P3 ports be less than 0.5dB；
The service band of second wavelength division multiplexer 4 is 977nm and 1064nm, in 977nm wave bands from P1 ports to P2 ports
Insertion loss be less than 0.5dB, insertion loss of the 1064nm wave bands from P1 ports to P3 ports be less than 0.5dB；Photonic crystal
Optical fiber 3 is model：The big mode field area polarization of LMA-PM-5 2.5m length keeps photonic crystal fiber 3；
Coupler 5 is 90 in the splitting ratio that 977nm wave bands lead directly to arm and coupling arm:10；
It is 6.5m to postpone the length of optical fiber 6.
The 977nm lasing light emitters based on full-optical fiber optical parametric oscillator that the present invention is provided, discrete optical element is not used,
But use all optical fibre structure, build and use during without regulation, calibration light path, with simple in construction, volume compact,
Reliability is high, with low cost, strong robustness the characteristics of.Gained 977nm laser is exported from single-mode fiber, with very high light beam matter
Amount.The 977nm lasing light emitters based on full-optical fiber optical parametric oscillator that the present invention is provided, independent of nonlinear crystal, but
Frequency transformation is realized using the four-wave mixing effect in photonic crystal fiber 3, effectively turns the optical-fiber laser of 1064nm wave bands
It is changed to the optical-fiber laser of 977nm wave bands.
The 977nm lasing light emitters based on full-optical fiber optical parametric oscillator that the present invention is provided are independent of nonlinear crystal with dividing
Vertical optical element.
It is preferred that, spectroanalysis instrument 7 used be near-infrared spectrometers 7, its wavelength cover be 700~
1200nm, wavelength resolution is 0.02nm, and dynamic range is 80dB.Now testing result is accurate.
It is preferred that, the P1 ports phase welding of the output optical fibre of optical fiber laser 1 and first wavelength division multiplexer 2, welding
Loss is less than 0.2dB；The P3 ports of first wavelength division multiplexer 2 and one end phase welding of the photonic crystal fiber 3, welding
Loss is less than 1dB；The P1 ports phase welding of the other end of the photonic crystal fiber 3 and second wavelength division multiplexer 4, welding
Loss is less than 1dB；The P2 ports of second wavelength division multiplexer 4 lead directly to one end phase welding of arm with the coupler 5, and welding is damaged
Consumption is less than 0.2dB；The coupler 5 leads directly to one end phase welding of the other end and the delay optical fiber 6 of arm, and splice loss, splice attenuation is less than
0.2dB；The P4 ports phase welding of the other end and first wavelength division multiplexer 2 of the delay optical fiber 6, splice loss, splice attenuation is less than
0.2dB。
It is noted that alignment polarization axle in the fusion process of polarization maintaining optical fibre.Obtain as shown in Figure 1 based on full-optical fiber optical
The 977nm lasing light emitters of parametric oscillator.The laser spectrum exported in the coupling arm of coupler 5 is measured using spectroanalysis instrument 7.
The 977nm lasing light emitters based on full-optical fiber optical parametric oscillator that the present invention is provided, pump light, flashlight and ideler frequency
Light will meet conservation of energy condition and phase-matching condition.For the four-wave mixing effect of degeneracy, parametric gain can be expressed as：
In above formula, g is parametric gain, and κ is phase misalignment dosage, P0For the power of pump light, γ is photonic crystal fiber 3
Nonlinear factor.From (1) formula as can be seen that when phase misalignment dosage κ is larger, parametric gain very little, only when κ is 0
Maximum parametric gain can be realized.Therefore, κ=0 is referred to as phase-matching condition.That is, only working as pump light, signal
When light, ideler frequency light meet phase-matching condition in photonic crystal fiber 3, pumping light power could be realized to signal light power
Effectively transfer.
Below in conjunction with instantiation, the method that the present invention is provided is described in detail.
The 977nm lasing light emitters based on full-optical fiber optical parametric oscillator that the present invention is provided are public using NKT photonics
The big mode field area polarization of department's production keeps the (model of photonic crystal fiber 3：LMA-PM-5) as nonlinear dielectric, based on degeneracy
Four-wave mixing effect realize pump light (1064.1nm) power to the transfer of flashlight (977nm) power.Photonic crystal used
Optical fiber 3 is single mode polarization-maintaining photonic crystal fiber 3, in the absence of cutoff wavelength, polarization extinction ratio>28dB, extramural cladding a diameter of 120
μm, length is 2.5m.Fibre core is surrounded by four circle airports, and air pitch of holes is 3.22 μm, a diameter of 1.35 μm of airport, air
The ratio between bore dia and spacing are 0.419, and nonlinear refractive index is 2.6 × 10-20m2/W。
The first step prepares component
According to shown in Fig. 1, prepare wavelength division multiplexer 2, the 2.5m of photonic crystal fiber 3, coupler 51, delay optical fiber 6
6.5m, spectroanalysis instrument 71.Wherein, the tail optical fiber of wavelength division multiplexer 2 and 4 uses the single-mode fiber (model of polarization-maintaining：PM
980), service band is 977nm and 1064nm, is less than 0.5dB in insertion loss of the 977nm wave bands from P1 ports to P2 ports,
It is less than 0.5dB in insertion loss of the 1064nm wave bands from P1 ports to P3 ports.Photonic crystal fiber 3 is inclined using big mode field area
Shake and keep (the model of photonic crystal fiber 3：LMA-PM-5).The tail optical fiber of coupler 55 uses the single-mode fiber (model of polarization-maintaining：PM
980) it is 90, to lead directly to the splitting ratio of arm and coupling arm in 977nm wave bands:10, delay optical fiber 6 also uses the single-mode fiber of polarization-maintaining
(model：PM 980).Spectroanalysis instrument 7 uses near-infrared spectrometers 7, and its wavelength cover is 700~1200nm, ripple
Long resolution ratio is 0.02nm, and dynamic range is 80dB.
Second step prepares pumping source
Optical fiber laser 1 according to a high-quality shown in Fig. 1, is prepared is used as the pumping of full-optical fiber optical parametric oscillator
Source.Optical fiber laser 1 uses polarization-maintaining single-mode fiber (model：PM 980) output laser center wavelength be 1064.1nm, spectral line width
Spend for 0.1nm, polarization extinction ratio is more than 15dB, mean power is more than 5W.
3rd step builds the optical parametric oscillator of all optical fibre structure
The structure provided according to accompanying drawing 1 by optical fiber laser 1, wavelength division multiplexer, photonic crystal fiber 3, coupler 5, prolong
Slow optical fiber 6 etc. is fused to together, builds full-optical fiber optical parametric oscillator.The output optical fibre of optical fiber laser 1 and wavelength-division are answered
It is welded together with the P1 ports of device 2, splice loss, splice attenuation is less than 0.2dB；By the P3 ports of wavelength division multiplexer 2 and photonic crystal fiber
33 are fused to together, and splice loss, splice attenuation is less than 1dB；By the P1 ports welding of the other end of photonic crystal fiber 3 and wavelength division multiplexer 4
To together, splice loss, splice attenuation is less than 1dB；Together with the P2 ports of wavelength division multiplexer 4 are fused to the straight-through arm of coupler 5, welding
Loss is less than 0.2dB；The other end delay optical fiber 6 that coupler 5 is led directly into arm is fused to together, and splice loss, splice attenuation is less than 0.2dB；Will
Together with the other end of delay optical fiber 6 is fused to the P4 ports of wavelength division multiplexer 2, splice loss, splice attenuation is less than 0.2dB.In polarization maintaining optical fibre
Fusion process in it is noted that alignment polarization axle.
The laser spectrum exported in the coupling arm of coupler 5 is measured using spectroanalysis instrument 7.
According to the structural parameters of photonic crystal fiber 3, using vector finite element method, it can calculate and obtain different wavelengths of light ripple
Mode propagation constant and effective core area, can according to the nonlinear viscoelastic piles of photonic crystal fiber 3, effective core area
To obtain the nonlinear coefficient γ of unit length photonic crystal fiber 3 and the relation of optical wavelength；Further try to achieve phase misalignment
Dosage κ and optical wavelength relation.In pump light mean power P0In the case of for 5W, the pump of different wave length is tried to achieve according to (1) formula
Parametric gain under Pu light, flashlight, ideler frequency light interaction, as shown in Figure 2.From figure 2 it can be seen that being according to wavelength
1064.1nm pump light pump photon crystal optical fibre 3, when flashlight is that 977nm, ideler frequency light disclosure satisfy that phase when being 168.3nm
Position matching condition, full-optical fiber optical parametric oscillator has more considerable parametric gain, can preferably realize pump light
Transfer from (1064.1nm) energy to flashlight (977nm) energy.
The typical output spectra that spectroanalysis instrument 7 is measured is as shown in Figure 3.From figure 3, it can be seen that full-optical fiber optical parameter
Oscillator can be produced effectively in 977nm laser, output spectrum based on 977nm wave bands, the laser power ratio of 977nm wave bands
Other high more than 10dB of wave band.Meanwhile, the single-mode fiber (model that 977nm laser passes through polarization-maintaining：PM 980) output, with very
High beam quality.
Those skilled in the art will be clear that the scope of the present invention is not restricted to example discussed above, it is possible to which it is carried out
Some changes and modification, the scope of the present invention limited without departing from appended claims.Although oneself is through in accompanying drawing and explanation
The present invention is illustrated and described in book in detail, but such explanation and description are only explanations or schematical, and it is nonrestrictive.
The present invention is not limited to the disclosed embodiments.
By to accompanying drawing, the research of specification and claims, when implementing the present invention, those skilled in the art can be with
Understand and realize the deformation of the disclosed embodiments.In detail in the claims, term " comprising " is not excluded for other steps or element,
And indefinite article " one " or " one kind " be not excluded for it is multiple.The some measures quoted in mutually different dependent claims
The fact does not mean that the combination of these measures can not be advantageously used.Any reference marker in claims is not constituted pair
The limitation of the scope of the present invention.
Claims (4)
1. a kind of 977nm lasing light emitters based on full-optical fiber optical parametric oscillator, it is characterised in that including for cardiac wave in generation
A length of 1064.1nm, breadth of spectrum line is 0.1nm, and polarization extinction ratio is more than 15dB, and average output power is more than the optical fiber of 5W laser
Laser, the first wavelength division multiplexer, photonic crystal fiber, the second wavelength division multiplexer, coupler and delay optical fiber,
The optical fiber laser, first wavelength division multiplexer, the photonic crystal fiber, second wavelength division multiplexer, institute
Stating coupler and the delay optical fiber, sequentially light path is connected, and the delay optical fiber is connected with the first wavelength division multiplexer light path；
The coupler, the delay optical fiber, the optical fiber laser, the tail optical fiber of first wavelength division multiplexer and described second
The tail optical fiber of wavelength division multiplexer is model：PM 980 polarization-maintaining single-mode fiber；
The service band of first wavelength division multiplexer is 977nm and 1064nm, in 977nm wave bands from P1 ports to P2 ports
Insertion loss is less than 0.5dB, is less than 0.5dB in insertion loss of the 1064nm wave bands from P1 ports to P3 ports；
The service band of second wavelength division multiplexer is 977nm and 1064nm, in 977nm wave bands from P1 ports to P2 ports
Insertion loss is less than 0.5dB, is less than 0.5dB in insertion loss of the 1064nm wave bands from P1 ports to P3 ports；
The photonic crystal fiber is model：The big mode field area polarization of LMA-PM-5 2.5m length keeps photonic crystal fiber；
The coupler is 90 in the splitting ratio that 977nm wave bands lead directly to arm and coupling arm:10；
The delay fiber lengths are 6.5m.
2. the 977nm lasing light emitters according to claim 1 based on full-optical fiber optical parametric oscillator, it is characterised in that also
Including the spectroanalysis instrument for detecting produced optical maser wavelength, the coupler is connected with the spectroanalysis instrument light path.
3. the 977nm lasing light emitters according to claim 2 based on full-optical fiber optical parametric oscillator, it is characterised in that institute
Spectroanalysis instrument is stated for near-infrared spectrometers, its wavelength cover is 700~1200nm, wavelength resolution is
0.02nm, dynamic range is 80dB.
4. the 977nm lasing light emitters according to claim 1 based on full-optical fiber optical parametric oscillator, it is characterised in that institute
The output optical fibre of optical fiber laser and the P1 ports phase welding of first wavelength division multiplexer are stated, splice loss, splice attenuation is less than 0.2dB；
The P3 ports of first wavelength division multiplexer and one end phase welding of the photonic crystal fiber, splice loss, splice attenuation are less than 1dB；
The P1 ports phase welding of the other end of the photonic crystal fiber and second wavelength division multiplexer, splice loss, splice attenuation is less than
1dB；
The P2 ports of second wavelength division multiplexer lead directly to one end phase welding of arm with the coupler, and splice loss, splice attenuation is less than
0.2dB；
The coupler leads directly to one end phase welding of the other end and the delay optical fiber of arm, and splice loss, splice attenuation is less than 0.2dB；
The P4 ports phase welding of the other end and first wavelength division multiplexer of the delay optical fiber, splice loss, splice attenuation is less than 0.2dB.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499608A (en) * | 2009-03-06 | 2009-08-05 | 北京交通大学 | Optically parametric oscillator |
| US8792156B1 (en) * | 2012-01-17 | 2014-07-29 | President And Fellows Of Harvard College | Laser illumination systems and methods for dual-excitation wavelength non-linear optical microscopy and micro-spectroscopy systems |
| CN106451056A (en) * | 2016-12-14 | 2017-02-22 | 上海理工大学 | Active amplification type optical parameter oscillation feedback system |
-
2017
- 2017-07-11 CN CN201710560107.5A patent/CN107171167A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101499608A (en) * | 2009-03-06 | 2009-08-05 | 北京交通大学 | Optically parametric oscillator |
| US8792156B1 (en) * | 2012-01-17 | 2014-07-29 | President And Fellows Of Harvard College | Laser illumination systems and methods for dual-excitation wavelength non-linear optical microscopy and micro-spectroscopy systems |
| CN106451056A (en) * | 2016-12-14 | 2017-02-22 | 上海理工大学 | Active amplification type optical parameter oscillation feedback system |
Non-Patent Citations (1)
| Title |
|---|
| 韩凯: "全光纤光学参量振荡器增益分布的测量", 《中国激光》 * |
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