Method for efficient deposition of tungsten sulfide on side surface of tapered optical fiber

The technical field of

[0001] the invention claims the vulcanization tungsten transferred to the optical fibre the lateral surface of the method comprises the steps of the invention claims a tapered fibre is set on the side of the high efficiency sulphide deposition of tungsten method.

Background technology

[0002] transition metal sulphide is a planar layer structure of nanometre material shows that can adjust the band gap and abundant of the optical and electronics under the normal character is more and more attention. Sulphide tungsten as the invention claims a transition metal sulphide the

2013 time when verification having saturation absorption characteristic the 2014 year is found to exhibit nonlinear optical. The sulphide tungsten as the saturation absorption body is used for mode locking laser and modulation q laser the experiment result is to be reported. So that the vulcanizing tungsten the pulse laser nonlinear optical fiber optical signal processing field and so on it has wide application foreground.

[0003] in order to make the optical field can be used for the vulcanization of tungsten material can be through the space light directly irradiate the material may also be the material with optical fibre integrated. Present still no the sulphide integrated of the optical fibre relative report. Has been reported by the other the invention claims a transition metal sulphide material sulfureted molybdenum and optical fibre integrated method mainly has the following several:

[0004] method 1: Using chemical vapour deposition method of the nanometer material grown on a substrate material is then using chemical method remove the base material is usually makes use of a solution of the base material corrosion removing. The nanometer material is a thin film in the form of floating in the solution on the optical fibre end face or side of the immersed the solution the nanometer material the lower part of the contact and the invention claims solution of this utility model can realize material and to the optical fibre transferring. This method need to prepare bigger size of the nanometer material the cost is high the needed time is long.

[0005] method 2: The material powder dispersed in a dispersing agent to form dispersion liquid. The optical fibre end face of the submerged in dispersion of the optical fibre is light by utilizing light induction function the material is deposited on the end face of the optical fibre. Although the method can control the deposition material the thickness of the maximum thickness of co and then it is usually dozens micron not make the optical field and material in a long distance on the interaction so it is not suitable for need the light field and the material is strengthened by making use of the invention the situation such as research * optical field and materials of the non-linear effect.

[0006] method 3: The material dispersion liquid and film forming polymer such as polyethylene resin of pva water solution are mixed the mixture solution drop of the glass plate drying to prepare film the film tearing out the back clamp the two optical fiber connector the middle when the light through joint it can realize optical field and material of the interaction of. Because the thin film the thickness of the co it is usually dozens micron thus the optical material field and the effect of the short length the same time it is not suitable for need the light field and the material is strengthened by making use of the invention the occasion of.

[0007] total is more than several method or high cost or it is not suitable for need the light field and the material is strengthened by making use of the invention the occasion of. Therefore it needs a method that can be compatible with low cost and meanwhile realizing light field and the material strengthened by making use of the invention.

The content of invention

[0008] the invention aims to solve the technical problem is to overcome the shortage of existing technology the invention claims a method of tapered fibre is set on the side of the high efficiency sulphide deposition of tungsten method can effectively the sulfureted tungstenic deposited on the tapered optical fibre flank and it can control the sulphide deposit the amount of the tungsten.

[0009] in order to solve said problem the technology of this invention solves the problem of the plan is as follows:

[0010] the invention claims a tapered fibre is set on the side of the high efficiency sulphide deposition of tungsten method specifically comprises the following steps: 0011 ] [ step 1: The sulphide nanometer material powder disperse in high volatile dispersing agent is made into vulcanized tungsten dispersion of the vulcanizing he dispersion solution whose concentration is from 0.0001 mg/ml lmg per ml;

[0012] step 2: The common single mode optical fibre prepared into tapered optical fiber tapered area optical fibre diameter of the control of the micron 3*15;

[0013] step 3: The tapered area of the immersion optical fiber curing dispersion of tungsten;

0014 step 4 ] [: The power of the laser from one end of the optical fibre input and the other end of the light power meter detecting output light power change;

0015 step 5 ] [: Through the control input tapered optical fiber the optical power and the size of the lighting time for controlling the sulfureted tungstenic deposited on the tapered fibre is set on the side of the number of the.

[0016] of said high volatile separating agent is ethyl alcohol or acetone.

[0017] the tapered area optical fibre diameter of the range of it is micron 6*10.

[0018] the input of the tapered optical fiber the optical power range is 10*100 milliwatt.

[0019] a lighting time range is 10 seconds to 30 minutes.

[0020] said step 4 if in the light outputted by light source lower power adding in optical amplifier to enough the optical power and then inputting the tapered fibre. The principle of this invention is obtained by dispersing agent with high volatility and light inducing as the sulphide deposition of tungsten material to the tapered optical fibre flank through the control input tapered optical fiber the optical power and the size of the lighting time control material depositing the volume of.

0021 ] and [ compared with existing technology this invention has advantages as follows:

[0022] this invention adopts light inducing and high volatile separating agent to make the sulphide tungsten with high efficiency can be deposited in the tapered fibre the lateral surface through the control input optical power of big and small and the lighting time can control the material deposition speed and quantity. Compared with the background technology the method of i preparing large area of material and transferring the invention does not need to prepare big area the vulcanization of tungsten material it only needs to use of vulcanization of tungsten powder can be. Compared with the background technology the method of 2 3 and method for end face of the deposition to prepare film the invention can make the sulphide deposition of tungsten material of tapered optical fibre flank so it can make the optical field and the material can has longer the action distance of. Because using the high volatile of dispersing agent dispersing agent of main body of volatile function accelerate material particles brownian movement and strengthen light induced deposition process general and a non-volatile or weak volatile of dispersing agent compared with the invention can obviously improve the material of the deposition speed of the volume and deposition.

Specification attached drawing

[0023] picture 1 is tapered fibre picture

[0024] picture 2 is on the tapered fibre is set on the side of the sulphide deposition of tungsten picture

[0025] picture 3 is tapered fibre is set on the side of the deposition of vulcanizing he microscope image

[0026] picture 4 is the tapered fibre is set on the side of the sulphide deposition of tungsten raman spectrum graph

[0027] 1 ordinary optical fiber 2 ordinary optical fiber the tapered fibre the transition area 3 tapered optical fiber light source 5 4 optical fiber connector adapter optical amplifier 6 7 sulphide tungsten dispersion liquid drop 8 glass sheet 9 light power meter

Specific implementing manner

[0028] a lower surface of the attached drawing and embodiments of this invention is to further explain but not to the limit of the invention the protection range.

[0029] to a tungsten sulphide deposits to the tapered fibre on the side face of the method and it also comprises the following steps:

[0030] step 1: The sulphide tungsten powder dispersion for high volatile dispersing agent and made into dispersion liquid vulcanizing liquid dispersion tungsten whose concentration is 0.000 lmg per ml water to lmg;

[0031] the volatile dispersing agent is to make the sulphide nanometer material particles that can stably exist and it is not easy to agglomerate and it has the advantages of high volatile solvent such as ethanol acetone and. The invention claims a preferred embodiment using the dispersing agent is ethyl alcohol.

[0032] the sulphide in the concentration of the preferred range is that 0.00 lmg per ml water to 0 lmg. If the concentration of the low it does not deposit if it is easy to realize the high concentration is not easy to control material is deposited the volume of.

[0033] step 2: The common optical fibre prepared into tapered optical fiber tapered area optical fibre diameter of the control of the micron 3*15;

[0034] the tapered optical fiber diameter of the preferred range is that 6*10 micron. Optical fibre the fine if it is easy to rupture and fall off if the optical fibre through the leakage in the air the optical field too weak not produce the effect of light induced deposition.

[0035] step 3: The tapered fibre immersed in sulphide dispersion of;

[0036] wherein the tapered fibre hanging fixed on a glass slide the upper part of the dispersion liquid droplets on the glass piece is dipped tapered fibre.

0037 step 4 ] [: The power of the light from tapered one end of the optical fibre input and the other end of the light power meter detecting output light power change;

[0038] is wherein the input light wave length range can be chosen from ultraviolet to near infrared wave band light source can be laser also can be from the radiation light source and the other light source of incoherent. Light source can be continuous light output and also can be pulsed light output.

0039 step 5 ] [: Through the control input tapered optical fiber the optical power to control the size of the sulphide deposition of the tapered fibre on the side face of the speed through controlling the lighting time to control the sulphide deposit the amount of the tungsten.

0040 ] and [ input into tapered optical fibre optical power of the preferred range is that 10*100 milliwatt if the light outputted by light source lower power is needed to be shown as picture 2 1 adding in optical amplifier to enough the optical power and then inputting the tapered fibre. Light source and the tapered optical fiber coupling can be shown as picture 2 1 this utility model adopts optical fiber connector adapter and it also can be used as the space of the optical coupling. The lighting time of the preferred range is 10 seconds to 30 minutes. When sulfureted tungstenic the beginning of the tapered fibre is set on the side of the deposition time the light generate absorption through observing the light power meter reading of the material can know the optical fibre is set on the side of the depositing the volume of. Optical power is higher the deposition of the fast. The lighting time is long the deposition of the more. Through controlling the optical power big and small and the lighting time it can achieve the material deposition of the volume of the control.

[0041] picture 3 is provided when the sulphide deposition of tungsten to the cone optical fibre when the microscope image can be obviously observed sulphide deposition of tungsten of the optical fibre the side surface of the. Drawing 4 the invention claims vulcanizing tungsten dispersion liquid is sulphide deposition of tungsten to the back of tapered optical fiber raman spectrum test pattern may be confirmed deposition to the tapered optical fiber on the tungsten material is vulcanized.