CN107121157A - Couple the measurement filter of optical fiber and Echo Wall microcavity - Google Patents
Couple the measurement filter of optical fiber and Echo Wall microcavity Download PDFInfo
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- CN107121157A CN107121157A CN201710308822.XA CN201710308822A CN107121157A CN 107121157 A CN107121157 A CN 107121157A CN 201710308822 A CN201710308822 A CN 201710308822A CN 107121157 A CN107121157 A CN 107121157A
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- optical fiber
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- wall microcavity
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 142
- 238000005259 measurement Methods 0.000 title claims abstract description 45
- 239000000835 fiber Substances 0.000 claims abstract description 96
- 238000010168 coupling process Methods 0.000 claims abstract description 26
- 230000008878 coupling Effects 0.000 claims abstract description 25
- 238000005859 coupling reaction Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 22
- 230000003287 optical effect Effects 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 13
- 230000037431 insertion Effects 0.000 claims abstract description 13
- 230000033228 biological regulation Effects 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
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- 230000004048 modification Effects 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
- G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
- G01D5/268—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light using optical fibres
Abstract
The present invention provides a kind of measurement filter for coupling optical fiber and Echo Wall microcavity, including optical fiber and Echo Wall microcavity, the insertion of Echo Wall microcavity is placed in optical fiber and intersected with optical fiber, there is gap between remaining fibre core of the bottom of intersection Echo Wall microcavity with optical fiber and abutted with the two sides of remaining fibre core, so that the input light of optical fiber optical wrap microcavity in part when being transferred to gap location is transmitted, it is monitored to measure the corresponding parameter inputted to Echo Wall microcavity by the input light to optical fiber, so as to which the corresponding parameter drawn according to measurement is measured to the material property filled to the Echo Wall microcavity；By being filtered regulation and control to inputting to be adjusted to the corresponding parameter of Echo Wall microcavity and/or filling to the material of Echo Wall microcavity come the input light to optical fiber.It by the present invention, can not only realize that parametrical sense is measured, and filtering regulation and control can be realized, and the stability of the device is more preferable, quality is higher and is more easy to realize.
Description
Technical field
The invention belongs to sensor technical field, and in particular to the measurement filtering dress of a kind of coupling optical fiber and Echo Wall microcavity
Put.
Background technology
In sensor field, when the diameter of section of ordinary optic fibre drawn bore into the optical fiber less than 2 μm when, tapered fiber disappears
The field that dies couples the Echo Wall microcavity pattern that can excite with Echo Wall microcavity, thus generally couples the Echo Wall using tapered fiber at present
The mode of microcavity carries out parameter measurement.But, usually required in coupling process using carbon dioxide laser welding or
The mode of optics glue sticking, tapered fiber is fixed as one with Echo Wall microcavity.Wherein, using carbon dioxide laser welding
When need optimization energy of lasers protection tapered fiber, need to protect tapered fiber dirty from optical cement during using optics glue sticking
Dye, and both processing modes will all make Echo Wall microcavity be in overcoupling state, so as to reduce the product of Echo Wall microcavity
Prime factor.In addition, the physical strength of tapered fiber in itself is relatively low, and is highly susceptible to ambient influnence, it is critical in order to realize
Couple state, the distance between tapered fiber and Echo Wall microcavity need to fine-tune, and both spacing are in vibrations and extraneous
It can all be changed in the presence of solution, so as to influence the launching efficiency of Whispering-gallery-mode, or even trigger " mode hopping ".Thus may be used
See, existing coupling optical fiber and Echo Wall microcavity realize that the mode of measurement has that inferior quality, stability are relatively low, realize that difficulty is larger
The problem of.
The content of the invention
The present invention provides a kind of measurement filter for coupling optical fiber and Echo Wall microcavity, with solve to couple at present optical fiber with
Echo Wall microcavity realizes that the poor quality, the stability that exist during measurement are low and realize the problem of difficulty is larger.
First aspect according to embodiments of the present invention filters dress there is provided a kind of measurement for coupling optical fiber and Echo Wall microcavity
Put, including optical fiber and Echo Wall microcavity, the Echo Wall microcavity, which is embedded in, to be placed in the optical fiber and intersects with the optical fiber,
Exist between the bottom of Echo Wall microcavity described in intersection and the remaining fibre core of the optical fiber gap and with the remaining fibre core
Two sides are abutted, so that the input light of optical fiber Echo Wall microcavity described in the optical wrap of part when being transferred to the gap location is passed
It is defeated, it is monitored to measure the corresponding parameter transmitted on Echo Wall microcavity by the input light to optical fiber, so that according to
The corresponding parameter drawn is measured to measure the characteristic filled to the material of the Echo Wall microcavity；By to inputting to echo
The corresponding parameter of wall microcavity and/or filling are adjusted to the material of Echo Wall microcavity is filtered tune come the input light to optical fiber
Control.
In a kind of optional implementation, bottom surface structure is offered in the optical fiber, the bottom surface structure is along the light
The two sides of fine length direction it is contour and with the centerline axis parallel of the optical fiber, the Echo Wall microcavity is placed in the bottom surface
Intersect in structure and with the optical fiber, abutted in the bottom of Echo Wall microcavity described in intersection with the two sides, and positioned at institute
There is gap in the remaining fibre core and the Echo Wall microcavity for stating the optical fiber between two sides.
In another optional implementation, the upper surface of the remaining fibre core between the two sides be made into
The centerline axis parallel and the short plane in the two sides.
In another optional implementation, the upper surface of the remaining fibre core between the two sides is made
Into the Inner arc using the fibre core center of circle as round dot.
In another optional implementation, the remaining fibre core both sides are provided with and the centerline axis parallel and short
Plane in the two sides.
In another optional implementation, multiple Echo Wall microcavitys are laid in interval insertion in the optical fiber,
The corresponding parameter transmitted on each Echo Wall microcavity is measured by being monitored to the light for inputting the optical fiber, so that
The corresponding parameter drawn according to measurement, is accordingly measured to the characteristic filled to the material of each Echo Wall microcavity.
In another optional implementation, the diameter of section of the optical fiber is more than 2 μm.
In another optional implementation, the minimum value in the gap is less than or equal to 1.5 μm.
In another optional implementation, in intersection, insertion is arranged in substrate optical fiber and the Echo Wall microcavity
Groove in.
The beneficial effects of the invention are as follows：
1st, the present invention excites Echo Wall microcavity pattern by using diameter of section much larger than the ordinary optic fibre of tapered fiber,
The physical strength of device can be improved, so as to improve the stability of device, due to whole device stability preferably, can't be
The reduction of quality factor is caused during use, therefore the quality of the present invention is more preferable；By making optical fiber intersect with Echo Wall microcavity,
The segment core of optical fiber is got rid of in intersection, optical fiber can be made to have part light spilling when inputting optical transport to intersection, passed through
Echo Wall microcavity and the two sides of remaining fibre core are abutted, can make to form closed-loop path between optical fiber and Echo Wall microcavity, from
And can be transmitted the part optical wrap Echo Wall microcavity of spilling, by making to exist between remaining fibre core and Echo Wall microcavity
Gap, it is ensured that optical fiber can excite Echo Wall microcavity pattern；Based on said structure, the present invention passes through the input light to optical fiber
It is monitored, it is possible to achieve the corresponding parameter transmitted in Echo Wall microcavity is measured, and the correspondence obtained according to measurement
Parameter can be measured to the characteristic for filling the material into Echo Wall microcavity；Pass through the correspondence to being transmitted on Echo Wall microcavity
Parameter is adjusted, it is possible to achieve the filtering to optical fiber input light regulates and controls, and thus the present invention acts not only as sensor, may be used also
To be used as wave filter；
2nd, by the present invention in that the upper surface of the remaining fibre core between the two sides is made into justifying with fibre core
The heart is the Inner arc of round dot, can reduce insertion loss；
3rd, the present invention in the remaining fibre core both sides by being provided with and the centerline axis parallel and short in the both sides
The plane in face, can advantageously reduce fibre core exposed surface difficulty of processing；
4th, the present invention lays multiple Echo Wall microcavitys by being spaced insertion in the optical fiber, it is possible to achieve multiple
The measurement of correspondence parameter；
5th, by the present invention in that the minimum value in gap is less than or equal to 1.5 μm, it is ensured that optical fiber can activate echo
Wall microcavity pattern；
6th, the present invention by optical fiber and the insertion of Echo Wall microcavity by that in the groove of substrate, can improve the steady of device
It is qualitative.
Brief description of the drawings
Fig. 1 is the structural representation of the measurement filter of present invention coupling optical fiber and Echo Wall microcavity；
Fig. 2 is the first embodiment front view of the measurement filter of present invention coupling optical fiber and Echo Wall microcavity；
Fig. 3 is the first embodiment side view of the measurement filter of present invention coupling optical fiber and Echo Wall microcavity；
Fig. 4 is the second embodiment front view of the measurement filter of present invention coupling optical fiber and Echo Wall microcavity；
Fig. 5 is the second embodiment side view of the measurement filter of present invention coupling optical fiber and Echo Wall microcavity.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the embodiment of the present invention, and make of the invention real
Applying the above-mentioned purpose of example, feature and advantage can be more obvious understandable, below in conjunction with the accompanying drawings to technical side in the embodiment of the present invention
Case is described in further detail.
In the description of the invention, unless otherwise prescribed with restriction, it is necessary to which explanation, term " connection " should do broad sense reason
Solution, for example, it may be mechanically connecting or electrical connection or the connection of two element internals, can be joined directly together, also may be used
To be indirectly connected to by intermediary, for the ordinary skill in the art, it can understand above-mentioned as the case may be
The concrete meaning of term.
It is that one embodiment structure of the measurement filter of present invention coupling optical fiber and Echo Wall microcavity is shown referring to Fig. 1
It is intended to.The measurement filter of the coupling optical fiber and Echo Wall microcavity can include optical fiber 110 and Echo Wall microcavity 120, described
The insertion of Echo Wall microcavity 120 is placed in the optical fiber 110 and intersected with the optical fiber 110, micro- in the Echo Wall described in intersection
There is gap between the bottom of chamber 120 and the remaining fibre core 111 of the optical fiber 110 and supported with the plane of the remaining both sides of fibre core 111
Connect, so that the input light of the optical fiber 110 Echo Wall microcavity 120 described in the optical wrap of part when transmitting to the gap location is passed
It is defeated, it is adjusted to carry out the corresponding parameter transmitted on the Echo Wall microcavity 120 by the input light to the optical fiber 110
Measurement, so that the corresponding parameter drawn according to measurement is measured to the characteristic filled to the material of Echo Wall microcavity 120；Pass through
Next pair is adjusted to inputting to the corresponding parameter of Echo Wall microcavity 120 and/or filling to the material of the Echo Wall microcavity 120
The input light of the optical fiber 110 is filtered regulation and control.
In the present embodiment, the optical fiber 110 can be ordinary optic fibre, and its diameter of section is typically much deeper than 2 μm, and for example section is straight
Footpath is 62.5 μm.Because the diameter of the ordinary optic fibre of the invention used is far longer than the diameter of section of tapered fiber, ordinary optic fibre
Physical strength be far above the physical strength of tapered fiber, therefore the physical strength of whole device of the present invention is improved, surely
It is qualitative more preferable.In addition, optical fiber 110 intersects vertically with Echo Wall microcavity 120, in intersection, the segment core of optical fiber 110 will be by
Working process is fallen, and part light spilling is so just had when the input light of optical fiber 110 is transferred to intersection.It is remaining fine in intersection
There are two sides in the both sides of core 111, the bottom of Echo Wall microcavity 120 is abutted with the two sides, such Echo Wall microcavity 120 and light
Fine 110 intersections will form a closed-loop path, and the part light of spilling can just be transmitted around Echo Wall microcavity 120.In addition, this hair
It is bright by setting certain interval between remaining fibre core 111 and Echo Wall microcavity 120 in the closed circuit, it is ensured that optical fiber can
Excite Echo Wall microcavity pattern.In order to be further ensured that optical fiber can excite Echo Wall microcavity pattern, the remaining fibre core 111 with
The beeline d of the Echo Wall microcavity 120 is less than or equal to 1.5 μm.In order to improve the stability of device, the present invention can be with
The intersection insertion of optical fiber and Echo Wall microcavity is arranged in the groove in substrate 130.When needing to multiple Echo Wall microcavitys
When the corresponding parameter of upper transmission is measured, the embedded multiple Echo Wall microcavitys of placement can be spaced in the optical fiber 110
120, two-dimentional sensor array is formed, by being monitored the light for inputting the optical fiber 110 come on each Echo Wall microcavity 120
The corresponding parameter of transmission is measured, so that the corresponding parameter drawn according to measurement, accordingly micro- to each Echo Wall to filling
The characteristic of the material of chamber is measured.
When needing to measure to inputting to the corresponding parameter of Echo Wall microcavity (electric current, voltage etc.), Ke Yixiang
The input light of optical fiber 110, when optical transport to gap location, part light can be transmitted around Echo Wall microcavity 120, the part light with
The corresponding parameter interaction transmitted on Echo Wall microcavity 120, is monitored by the output light to optical fiber 110, can measured
Go out on Echo Wall microcavity 120 size of the corresponding parameter transmitted.Due to when the material type filled in Echo Wall microcavity 120 and many
When few etc. different, even if inputting the corresponding parameter transmitted on identical parameter, Echo Wall microcavity 120 to Echo Wall microcavity 120
Will not be identical, therefore after the corresponding parameter transmitted on Echo Wall microcavity 120 is measured, it is possible to achieve in Echo Wall microcavity 120
The feature measurement of packing material.For example, when the voltage for applying default size to the two ends of Echo Wall microcavity 120, by optical fiber
Output light detection is obtained after the size of current transmitted on Echo Wall microcavity 120, can be according to the voltage of application and the electricity measured
Stream determines the resistance value size of material of the filling into Echo Wall microcavity 120.
Further, since segment core can be processed in optical fiber 110, therefore the output light and input light of optical fiber 110
It will differ, the removal of segment core in optical fiber 110, equivalent to realizing the filtering of the input light of optical fiber 110.Due in gap
The part light transmitted at 130 on optical fiber 110 can be transmitted around Echo Wall microcavity 120, therefore be transmitted on Echo Wall microcavity 120
Corresponding parameter certain influence will be produced to the light that is transmitted on optical fiber 110, so as to produce one to the filter effect of optical fiber 110
Fixed influence.Because the corresponding parameter size transmitted on Echo Wall microcavity 120 is not only joined with the corresponding of input Echo Wall microcavity 120
Measure size relevant, it is also relevant with the material filled in Echo Wall microcavity 120, therefore the light progress to input optical fibre 110 ought be needed
During filtering regulation, corresponding parameter can be inputted into Echo Wall microcavity 120, and to corresponding parameter and/or Echo Wall microcavity
The material (material type and how many etc.) filled in 120 is adjusted, so as to realize the regulation of optical fiber filter effect.
As seen from the above-described embodiment, the present invention is excited by using diameter of section much larger than the ordinary optic fibre of tapered fiber
Echo Wall microcavity pattern, can improve the physical strength of device, so that the stability of device is improved, due to the stabilization of whole device
Property preferably, can't cause the reduction of quality factor in use, therefore the quality of the present invention is more preferable；By make optical fiber with
Echo Wall microcavity intersects, and the segment core of optical fiber is got rid of in intersection, and optical fiber can be made to have when inputting optical transport to intersection
Part light overflows, and by abutting Echo Wall microcavity and the two sides of remaining fibre core, can make between optical fiber and Echo Wall microcavity
Closed-loop path is formed, so as to so that the part optical wrap Echo Wall microcavity overflowed is transmitted, by making remaining fibre core with returning
There is gap between sound wall microcavity, it is ensured that optical fiber can excite Echo Wall microcavity pattern.Based on said structure, the present invention is logical
Cross and the input light of optical fiber is adjusted, it is possible to achieve the corresponding parameter measurement transmitted on Echo Wall microcavity, and according to measurement
Obtained corresponding parameter can be measured to the characteristic for filling the material into Echo Wall microcavity；By on Echo Wall microcavity
The corresponding parameter of transmission is adjusted, it is possible to achieve the filtering to optical fiber input light regulates and controls, and thus the present invention is acted not only as
Sensor, is also used as wave filter.
Referring to Fig. 2 and 3, the first embodiment of the measurement filter of present invention coupling optical fiber and Echo Wall microcavity is followed successively by
Front view and side view.The measurement filter of the coupling optical fiber and Echo Wall microcavity can include optical fiber 110 and the Echo Wall is micro-
Chamber 120, offers bottom surface structure 140, both sides of the bottom surface structure 140 along the length direction of optical fiber 110 in optical fiber 110
The centerline axis parallel of face 141 and the optical fiber 110 and contour, the insertion of Echo Wall microcavity 120 is placed in the optical fiber 110
Intersect on interior bottom surface structure 140 and with the optical fiber 110, the bottom of Echo Wall microcavity 120 and the two sides in intersection
141 abut, and exist between the remaining fibre core 111 and Echo Wall microcavity 120 of the optical fiber 110 between the two sides 141
Gap.Wherein being located at the upper surface of the remaining fibre core 111 between two sides 141 can be made into putting down with the central axis of fibre core 111
The capable and short plane in two sides 141.
In the present embodiment, when making apparatus of the present invention, rubbing down or lithographic technique can be used first by optical fiber 110
The D type structures of bottom surface and the centerline axis parallel of fibre core 111 are made in a part, and by rubbing down or portion is etched away when making D type structures
Divide fibre core, so that the fibre core upper surface at bottom center position is the plane with the centerline axis parallel of fibre core 111.Then using throwing
Mill, etching or micro-nano technology technology are handled the fibre core surface at bottom center position, so that at bottom center position
Fibre core surface still with core centre diameter parallel, it is but short in its two sides 141.
As seen from the above-described embodiment, the present invention is excited by using diameter of section much larger than the ordinary optic fibre of tapered fiber
Echo Wall microcavity pattern, can improve the physical strength of device, so that the stability of device is improved, due to the stabilization of whole device
Property preferably, can't cause the reduction of quality factor in use, therefore the quality of the present invention is more preferable；By make optical fiber with
Echo Wall microcavity intersects, and the segment core of optical fiber is got rid of in intersection, and optical fiber can be made to have when inputting optical transport to intersection
Part light overflows, and by abutting Echo Wall microcavity and the two sides of remaining fibre core, can make between optical fiber and Echo Wall microcavity
Closed-loop path is formed, so as to so that the part optical wrap Echo Wall microcavity overflowed is transmitted, by making remaining fibre core with returning
There is gap between sound wall microcavity, it is ensured that optical fiber can excite Echo Wall microcavity pattern.Based on said structure, the present invention is logical
Cross and the input light of optical fiber is monitored, it is possible to achieve corresponding parameter or the material measurement transmitted on Echo Wall microcavity, and root
The corresponding parameter obtained according to measurement can be measured to the characteristic for filling the material into Echo Wall microcavity；By to the Echo Wall
The corresponding parameter transmitted on microcavity is adjusted, it is possible to achieve the filtering to optical fiber input light regulates and controls, and thus the present invention not only may be used
As sensor, to be also used as wave filter.
Referring to Figure 4 and 5, the second embodiment of the measurement filter of present invention coupling optical fiber and Echo Wall microcavity is followed successively by
Front view and side view.The measurement filter of the coupling optical fiber and Echo Wall microcavity can include optical fiber 110 and the Echo Wall
Microcavity 120, offers bottom surface structure 140 in optical fiber 110, and the bottom surface structure 140 is along the two of the length direction of optical fiber 110
Sideways 141 with the centerline axis parallel of the optical fiber 110 and contour, the insertion of Echo Wall microcavity 120 is placed in the optical fiber
Intersect on bottom surface structure 140 in 110 and with the optical fiber 110, the bottom of Echo Wall microcavity 120 and the both sides in intersection
Face 141 is abutted, and is deposited between the remaining fibre core 111 and Echo Wall microcavity 120 of the optical fiber 110 between the two sides 141
In gap.Wherein, the upper surface of the remaining fibre core 111 between two sides 141 can be made into using the center of circle of fibre core 111 as circle
The Inner arc of point.
In the present embodiment, when making apparatus of the present invention, rubbing down or lithographic technique can be used first by optical fiber 110
The D type structures of bottom surface and the centerline axis parallel of fibre core 111 are made in a part, when making D type structures along tangent with fibre core
Direction only carries out rubbing down or etching to the covering of optical fiber, so as to form bottom surface and the tangent D type structures of fibre core.Then can be
Positioned at fibre core both sides, it is selected at fibre core identical position (horizontal range of this position and core centre axis be less than or
Person is equal to fiber core radius), the covering of optical fiber is processed further using micro-nano technology technology, until the fibre below D type structures
Wicking surface exposes.Further exposed fibre core is processed after fibre core surface is exposed, so that the thickness of the exposed surface of fibre core
Degree is cut out d (d is less than or equal to 1.5 μm), so that the exposed surface of fibre core is formed in using the fibre core center of circle as round dot
Circular arc.
D type structures are being made, can also when selected distance fibre core identical position is processed further to the covering of optical fiber
The horizontal range of select location and core centre axis is set to be more than fiber core radius (now to the further rubbing down of fibre cladding or quarter
The depth of erosion should be less than the diameter of fibre core), so need to make working depth be less than fibre core when being processed further covering
Diameter, and be processed when working depth reaches default depth further along horizontal direction until touching fibre core, afterwards
The covering that fibre core surface is covered is peeled off, until the fibre core surface below D type structures is exposed, so when fibre core is further
After processing, its remaining fibre core both sides will be formed and centerline axis parallel and the short plane in two sides 141, so that in remaining fibre core
Both sides form certain convolution space.Due to if it is desired that the exposed surface of fibre core is made into the inner circle using the fibre core center of circle as round dot
Arc, then need to be processed fibre core surface from each different directions along center of circle direction, therefore around fibre core exposed surface
Certain convolution space is set, fibre core exposed surface difficulty of processing is advantageously reduced.Due to compared to first shown in Fig. 2 and Fig. 3
Remaining fibre core is more in embodiment, the present embodiment, therefore the present embodiment can further reduce insertion loss.
As seen from the above-described embodiment, the present invention is excited by using diameter of section much larger than the ordinary optic fibre of tapered fiber
Echo Wall microcavity pattern, can improve the physical strength of device, so that the stability of device is improved, due to the stabilization of whole device
Property preferably, can't cause the reduction of quality factor in use, therefore the quality of the present invention is more preferable；By make optical fiber with
Echo Wall microcavity intersects, and the segment core of optical fiber is got rid of in intersection, and optical fiber can be made to have when inputting optical transport to intersection
Part light overflows, and by abutting Echo Wall microcavity and the two sides of remaining fibre core, can make between optical fiber and Echo Wall microcavity
Closed-loop path is formed, so as to so that the part optical wrap Echo Wall microcavity overflowed is transmitted, by making remaining fibre core with returning
There is gap between sound wall microcavity, it is ensured that optical fiber can excite Echo Wall microcavity pattern.Based on said structure, the present invention is logical
Cross and the input light of optical fiber is adjusted, it is possible to achieve the corresponding parameter measurement transmitted on Echo Wall microcavity, and according to measurement
Obtained corresponding parameter can be measured to the characteristic for filling the material into Echo Wall microcavity；By on Echo Wall microcavity
The corresponding parameter of transmission is adjusted, it is possible to achieve the filtering to optical fiber input light regulates and controls, and thus the present invention is acted not only as
Sensor, is also used as wave filter.
Those skilled in the art will readily occur to its of the present invention after considering specification and putting into practice invention disclosed herein
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledge in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (9)
1. a kind of measurement filter for coupling optical fiber and Echo Wall microcavity, it is characterised in that including optical fiber and Echo Wall microcavity,
The Echo Wall microcavity insertion is placed in the optical fiber and intersected with the optical fiber, at the bottom of Echo Wall microcavity described in intersection
There is gap between end and the remaining fibre core of the optical fiber and abutted with the two sides of the remaining fibre core, so that the optical fiber
Input light Echo Wall microcavity described in the optical wrap of part when being transferred to the gap location is transmitted, and is carried out by the input light to optical fiber
Monitor to measure the corresponding parameter transmitted on Echo Wall microcavity, so that the corresponding parameter drawn according to measurement is to filling extremely
The characteristic of the material of the Echo Wall microcavity is measured；By to inputting to the corresponding parameter of Echo Wall microcavity and/or filling
Material to Echo Wall microcavity is adjusted and is filtered regulation and control come the input light to optical fiber.
2. the measurement filter of coupling optical fiber according to claim 1 and Echo Wall microcavity, it is characterised in that the light
Offer bottom surface structure in fibre, two sides of the bottom surface structure along the fiber length it is contour and with the optical fiber
Heart diameter parallel, the Echo Wall microcavity is placed on the bottom surface structure and intersected with the optical fiber, is being returned described in intersection
The bottom of sound wall microcavity is abutted with the two sides, and the remaining fibre core of the optical fiber between the two sides with it is described
There is gap in Echo Wall microcavity.
3. the measurement filter of coupling optical fiber according to claim 2 and Echo Wall microcavity, it is characterised in that positioned at institute
The upper surface for stating the remaining fibre core between two sides is made into and the centerline axis parallel and the short plane in the two sides.
4. the measurement filter of coupling optical fiber according to claim 2 and Echo Wall microcavity, it is characterised in that positioned at institute
The upper surface for stating the remaining fibre core between two sides is made into Inner arc using the fibre core center of circle as round dot.
5. the measurement filter of coupling optical fiber according to claim 4 and Echo Wall microcavity, it is characterised in that described surplus
Remaining fibre core both sides are provided with and the centerline axis parallel and the short plane in the two sides.
6. the measurement filter of coupling optical fiber according to claim 1 and Echo Wall microcavity, it is characterised in that the light
Multiple Echo Wall microcavitys are laid in interval insertion in fine, by being monitored the light for inputting the optical fiber come to each time
The corresponding parameter transmitted on sound wall microcavity is measured, so that the corresponding parameter drawn according to measurement, accordingly to filling to each
The characteristic of the material of individual Echo Wall microcavity is measured.
7. the measurement filter of coupling optical fiber according to any one of claim 1 to 6 and Echo Wall microcavity, its feature
It is, the diameter of section of the optical fiber is more than 2 μm.
8. the measurement filter of coupling optical fiber according to any one of claim 1 to 6 and Echo Wall microcavity, its feature
It is, the minimum value in the gap is less than or equal to 1.5 μm.
9. the measurement filter of coupling optical fiber according to any one of claim 1 to 6 and Echo Wall microcavity, its feature
It is, optical fiber and the Echo Wall microcavity is embedded in the groove being arranged in substrate in intersection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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