CN109752794A - A kind of optical waveguide is wrapped the hybrid integrated twin-core fiber and preparation method of microchannel - Google Patents
A kind of optical waveguide is wrapped the hybrid integrated twin-core fiber and preparation method of microchannel Download PDFInfo
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- CN109752794A CN109752794A CN201711071661.3A CN201711071661A CN109752794A CN 109752794 A CN109752794 A CN 109752794A CN 201711071661 A CN201711071661 A CN 201711071661A CN 109752794 A CN109752794 A CN 109752794A
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- miniflow
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Abstract
The invention discloses a kind of with double optics channel and optical channel and the compound integrated novel optical fiber and preparation method thereof of substance microchannel.This optical fiber is compound nested each other with optical waveguide by airport, constitutes a kind of novel Microstructure optical fiber, to realize that this integrated optical fibre device provides new fiber basis material.Various physics, chemistry, the high-precision sensing detection of biological parameter and high performance full light regulation device require the efficient interaction by light and substance, it is sufficiently exchanged with forming light-wave information with the mutual information of substance, environmental characteristic, to achieve the purpose that raising sensing detection precision, enhancing function are integrated, improve device performance.The present invention is to provide the twin-core fibers of a kind of miniflow substance channel and light wave channel hybrid integrated, the optical fiber includes one or more airports as miniflow substance channel, two fibre cores are as Light guiding channel, this novel optical fiber can be used for constructing miniflow integrated device, realize miniflow sensing and measurement.
Description
Technical field
The invention belongs to technical field of optical fiber sensing, in particular to a kind of miniflow substance channel and light wave channel hybrid integrated
Twin-core fiber.
Background technique
Some new structures and new material optical fiber continue to bring out in recent years, as photonic crystal fiber [P.St.J.Russell,
Photonic-Crystal Fibers,Journal of lightwave technology,vol.24,pp.4729-4749,
2006；D.-I.Yeom,H.C.Park,I.K.Hwang,and B.Y.Kim,Tunable gratings in a hollow-
core photonic bandgap fiber based on acousto-optic interaction,Optics
Express, vol.17, pp.9933-9939,2009], multi-core optical fiber [Saitoh K, Matsuo S.Multicore fibers
For large capacity transmission.Nanophotonics, 2013,2 (5-6): 441-454], chiral fiber
[V.I.Kopp andA.Z.Genack,Chiral fibres:Adding twist,Nat Photon,vol.5,pp.470-
472,2011], sulphur system optical fiber, super clever (Metamaterial) optical fiber etc..The appearance of these optical fiber, be optical fiber technology development and
Using being filled with new vitality.Microstructured optical fibers pass through embedded micro-structure, on the one hand, bring largely for optical fibre device
New attribute (infinitely cut-off single mode, anomalous dispersion, high non-linearity etc.)；On the other hand, also for based on light-substance, light-sound, opto-mechanical
The interdisciplinary application of the interactions such as tool provides flexible new platform.In recent years, novel Microstructure optical fiber and device, in light
The fields such as transmission, light sensing, spectroscopy, nonlinear optics, quantum optices have obtained increasingly extensive application；It has opened up in optical fiber
Upper or inside of optical fibre constructs the new direction of micro- laboratory (Lab-in/on-fiber), distributed gas detection, space division multiplexing, light
Fine all-optical device, optical fiber substance transmit [O.A.Schmidt, T.G.Euser, andP.S.J.Russell, Mode-based
microparticle conveyor belt in air-filled hollow-core photonic crystal fiber,
OpticsExpress, vol.21, pp.29383-29391,2013] etc. new research direction, advance optical fiber technology from simple
Mode transmission device develop to integrated multifunction device platform direction.The advantage major embodiment of microstructured optical fibers functionally
: it breaches traditional fiber mainly as the functional limitation of optical transmission of information device, has on material and structure higher
Design freedom, therefore more flexibilities can be showed, and obtained based on optical information with embodied in execution function it is deeper
Wider array of physical background.
In terms of currently mainly having following two to the research of microstructured optical fibers and device: being on the one hand to optical fiber structure and material
The expansion and utilization of material.The further compound function of extending traditional fiber of functional material, developed various Active Optical Fibers and
New function sensor fibre.On the other hand, Massachusetts Institute Technology Y.Fink research group is by organic material, conductor material, half
The multiple materials such as conductor material are integrated in an optical fiber, and it is more to have developed chemical sensitisation optical fiber, distributed temperature sensing optical fiber etc.
The novel more material integrated optical fibers of kind, enrich the type of optical fiber, have opened up the new direction of optical fiber technology development.
In addition, on the basis of novel Microstructure optical fiber, being led to using the interaction of light and substance based on various mechanism
The Application of composite and Depth Study to optical fiber structure, material and embedded space are crossed, the function that can further realize device is integrated,
Wide development space is provided for the development of microstructured optical fibers technology and the construction of new device.
Either various physics, chemistry, the high-precision sensing detection of biological parameter or high performance full light modulator
Part requires the efficient interaction by light and substance, to form the light-wave information information mutual with substance, environmental characteristic
Sufficiently exchange is based on light and object to achieve the purpose that raising sensing detection precision, enhancing function are integrated, improve device performance
The microstructure fiber device of matter interaction is also such.
Using band gap optical waveguide mechanism, P.Russell has invented hollow photonic crystal fiber (P.Russell, Photonic
Crystal fibers, Science, 299:358-362, Jan.2003), this optical fiber can greatly improve light and miniflow object
The interaction of matter, since the requirement for bandgap structure is stringent, thus the technology difficulty of the preparation of photonic crystal fiber compares
Height, further, since the presence of porous band gap micro-structure is but also this optical fiber is easy to soak liquid when importing microfluidic liquid
Moisten into micro-structure, applies more difficult.
2000, C.E.Kerbage et al. reported a kind of six hole optical fiber [C.E.Kerbage of circular central core
et.al.,Experimental and scalar beam propagation analysis of an air-silica
Microstructure fiber, Opt.Express, 7,113-122,2000], have outside the highly doped fibre core of this optical fiber low
Refractive index covering, while there are six biggish airport on covering, can be filled in airport the material of various different characteristics with
Form various optical fibre devices.This optical fiber is when for miniflow measurement, on the one hand, due to fibre core have with the miniflow in hole it is biggish
Spacing weakens the interaction of light and substance；On the other hand, since optical fiber closely has a fibre core, it is difficult in same root optical fiber
Upper construction double light path interferometer.
Summary of the invention
In view of the shortcomings of the prior art, the present invention provides the twin-core of a kind of miniflow substance channel and light wave channel hybrid integrated
Optical fiber and preparation method.The optical fiber mature preparation process, design is simple easy to process, can improve light and miniflow substance phase interaction
With, and can largely reduce device size, it can be widely used in fields such as physics, chemistry, biologies.
The object of the present invention is achieved like this: a kind of annular fibre core is wrapped the integrated twin-core light in miniflow substance channel hole
Fibre, including airport, the first fibre core, the second fibre core, three is by covering tight.First fibre core airport of wrapping is located at light
Fine center for enhancing the interaction of the evanscent field of light wave and miniflow substance in fibre core, and is embedded with one in thicker covering
A fiber core with single-mold is located at the first fibre core side and reference or comparison channel far from airport, as light wave as the second fibre core.
The airport is miniflow substance channel, and the first fibre core and the second fibre core are as Light guiding channel.
Further, in order to further enhance the interaction of miniflow substance Yu evanescent wave light field, the miniflow substance
The twin-core fiber in channel and light wave channel hybrid integrated, can also be further configured to, in the design of relative space position structure
On, it is common single mode optical fiber one is central core, and the biggish eccentric air hole inwall beside fiber optic hub has one
Another fibre core of layer high index waveguide layer as miniflow substance channel of wrapping.
A kind of preparation method of miniflow substance channel and the twin-core fiber of light wave channel hybrid integrated, includes the following steps:
(1) MCVD technique is used, one layer of higher ducting layer of refractive index is deposited in high purity quartz inside pipe wall, then contracts
Stick is until center bore reaches scheduled range；
(2) small using one bias of method preparation of Ultrasonic machining in the wall of the heavy wall tubulose toroidal cores preform
Hole；
(3) fiber core refractive index and the tubulose preform annular core parameters phase are inserted at the bias aperture
Same fiber stub prefabricated components, the outer diameter of the prefabricated components is slightly less than the diameter of eccentric aperture, in order to can easily insert
Eccentric aperture in the core prefabricated components insertion tubulose preform tube wall；
(4) preform prepared is loaded on wire drawing machine and carries out melt drawing；
(5) in drawing process, as the temperature rises, the preform center air hole of melting can gradually be collapsed,
In order to prevent collapsing for airport, needing to apply normal pressure in the upper end of prefabricated rods is caused with equalizing molten prefabricated rods surface tension
Collapse, ultimately form annular fibre core 1-2 and wrap the twin-core fiber of miniflow substance channel hole 1-1.
Further, in step (2), in the design of relative space position structure, it is common for being changed to central core
Single mode optical fiber, and the biggish eccentric air hole inwall beside fiber optic hub is used as with one layer of high index waveguide layer and wraps
Another fibre core of miniflow substance channel can prepare another annular fibre core and wrap the twin-core light in miniflow substance channel hole
It is fine.
The present invention provides the twin-core fibers and preparation method of a kind of miniflow substance channel and light wave channel hybrid integrated, should
Optical fiber is able to achieve light and efficiently interacts with miniflow substance, and can be integrated over the same fiber by interferometer light path, can be used for
Miniflow integrated device is constructed, realizes miniflow sensing and measurement, can be used for making the micro-optical interference being integrated on an optical fiber
Instrument realizes the real-time monitoring and measurement of concentration, refractive index, chemical substance in flowing material etc..
Detailed description of the invention
Fig. 1 is that annular fibre core centered on miniflow substance channel is wrapped the twin-core fiber in miniflow substance channel hole；
Fig. 2 is that twin-core fiber prefabricated rods prepare schematic diagram；
Fig. 3 is the preform arrangement for being used to prepare the twin-core fiber of single hole miniflow substance channel and light wave channel hybrid integrated
Schematic diagram；
Fig. 4 is the preparation process schematic diagram of the twin-core fiber of single hole miniflow substance channel and light wave channel hybrid integrated；Fig. 5
It is that annular fibre core centered on the reference of light wave or comparison channel is wrapped the twin-core fiber in miniflow substance channel hole.
In figure: 1-2 is annular fibre core, and 1-1 is miniflow substance channel hole, and 1-3 is reference or the comparison channel fibre core of light wave,
Far from miniflow substance channel.4-1 is preform, and 4-2 is pyrographite furnace, and 4-3 is to draw out the optical fiber come.5-1 is light
The reference of wave or comparison channel fibre core, far from miniflow substance channel, 5-2 is miniflow substance channel hole, and 5-3 is annular fibre core.
Specific embodiment
As shown in Figure 1:
A kind of annular fibre core is wrapped the integrated twin-core fiber in miniflow substance channel hole, including airport, the first fibre core, the
Two fibre cores, three is by covering tight.The first fibre core 1-2 airport 1-1 that wraps is located at the center of optical fiber, for enhancing fibre
The interaction of the evanscent field of light wave and miniflow substance in core, and embedded with a fiber core with single-mold as the second fibre in thicker covering
Core 1-3 is located at the first fibre core side and reference or comparison channel far from airport, as light wave.The airport 1-1 is
Miniflow substance channel, the first fibre core 1-2 and the second fibre core 1-3 are as Light guiding channel.
It is as shown in Figure 5:
It further, is common single mode optical fiber one is central core, and it is biggish eccentric empty beside fiber optic hub
Stomata inner wall has another fibre core of one layer of high index waveguide layer as miniflow substance channel of wrapping.
A kind of preparation method of miniflow substance channel and the twin-core fiber of light wave channel hybrid integrated, includes the following steps:
(1) MCVD technique is used, one layer of higher ducting layer of refractive index is deposited in high purity quartz inside pipe wall, then contracts
Stick is until center bore reaches scheduled range；
(2) small using one bias of method preparation of Ultrasonic machining in the wall of the heavy wall tubulose toroidal cores preform
Hole；
(3) fiber core refractive index and the tubulose preform annular core parameters phase are inserted at the bias aperture
Same fiber stub prefabricated components, the outer diameter of the prefabricated components is slightly less than the diameter of eccentric aperture, in order to can easily insert
Eccentric aperture in the core prefabricated components insertion tubulose preform tube wall；
(4) preform prepared is loaded on wire drawing machine and carries out melt drawing；
(5) in drawing process, as the temperature rises, the preform center air hole of melting can gradually be collapsed,
In order to prevent collapsing for airport, needing to apply normal pressure in the upper end of prefabricated rods is caused with equalizing molten prefabricated rods surface tension
Collapse, ultimately form annular fibre core 1-2 and wrap the twin-core fiber of miniflow substance channel hole 1-1.
(6) further, in step (2), in the design of relative space position structure, it is common for being changed to central core
Single mode optical fiber, and the biggish eccentric air hole inwall beside fiber optic hub has one layer of high index waveguide layer as wrapping
Another fibre core of miniflow substance channel, another annular fibre core can be prepared and wrapped the twin-core in miniflow substance channel hole
Optical fiber.
Embodiment
Annular fibre core centered on miniflow substance channel wrap miniflow substance channel hole twin-core fiber preparation side
Method.
Step (1) use MCVD technique, high purity quartz inside pipe wall deposit one layer of higher ducting layer of refractive index, then into
Row contracting stick is until center bore reaches scheduled range；
Step (2) prepares one partially using the method for Ultrasonic machining in the wall of the heavy wall tubulose toroidal cores preform
Heart aperture；
Step (3) is inserted into a fiber core refractive index at the bias aperture and the tubulose preform annular fibre core is joined
The identical fiber stub prefabricated components of number, the outer diameter of the prefabricated components are slightly less than the diameter of eccentric aperture, in order to can easily
By the eccentric aperture in the lock pin prefabricated components insertion tubulose preform tube wall；
The preform prepared is loaded on wire drawing machine by step (4) carries out melt drawing；
Step (5) is in drawing process, and as the temperature rises, the preform center air hole of melting can gradually collapse
It falls into, in order to prevent collapsing for airport, needs to apply normal pressure in the upper end of prefabricated rods with equalizing molten prefabricated rods surface tension
It is caused to collapse, it ultimately forms annular fibre core 1-2 and wraps the twin-core fiber of miniflow substance channel hole 1-3.
Claims (3)
- The twin-core fiber in miniflow substance channel hole 1. the annular fibre core centered on a kind of substance channel by miniflow is wrapped, such as Fig. 1 It is shown.It is characterized in that: the optical fiber includes an airport as miniflow substance channel 1-1, two fibre core 1-2 and 1-3 conducts Light guiding channel, fibre core 1-2 wrap airport, to enhance the mutual of the evanscent field of light wave and miniflow substance in fibre core 1-2 Effect, fibre core 1-3 can be used as reference or the comparison channel of light wave far from miniflow substance channel.
- The twin-core fiber preparation method in miniflow substance channel hole 2. the annular fibre core centered on a kind of miniflow substance channel is wrapped. It is characterized in that:(1) MCVD technique is used, one layer of higher ducting layer of refractive index is deposited in high purity quartz inside pipe wall, it is straight then to carry out contracting stick Until center bore reaches scheduled range；(2) an eccentric aperture is prepared using the method for Ultrasonic machining in the wall of the heavy wall tubulose toroidal cores preform；(3) it is identical with the tubulose preform annular core parameters that a fiber core refractive index is inserted at the bias aperture Fiber stub prefabricated components, the outer diameter of the prefabricated components are slightly less than the diameter of eccentric aperture, in order to can easily be pre- by lock pin Eccentric aperture in tubulose preform tube wall described in Component Embedding processed；(4) preform prepared is loaded on wire drawing machine and carries out melt drawing；(5) in drawing process, as the temperature rises, the preform center air hole of melting can gradually be collapsed, in order to Collapsing for airport is prevented, needs to apply normal pressure in the upper end of prefabricated rods to collapse caused by equalizing molten prefabricated rods surface tension Contracting ultimately forms annular fibre core 1-2 and wraps the twin-core fiber of miniflow substance channel hole 1-1.
- 3. the preparation side of the twin-core fiber of a kind of miniflow substance channel according to claim 2 and light wave channel hybrid integrated Method, the twin-core fiber in miniflow substance channel hole it is characterized in that: the annular fibre core of the formation is wrapped, is also possible to central core Biggish eccentric airport 5-2 inner wall for common single mode optical fiber 5-1, and beside fiber optic hub has one layer of high refractive index wave Another fibre core 5-3 of the conducting shell as miniflow substance channel of wrapping.
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| CN201711071661.3A CN109752794A (en) | 2017-11-03 | 2017-11-03 | A kind of optical waveguide is wrapped the hybrid integrated twin-core fiber and preparation method of microchannel |
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| CN201711071661.3A CN109752794A (en) | 2017-11-03 | 2017-11-03 | A kind of optical waveguide is wrapped the hybrid integrated twin-core fiber and preparation method of microchannel |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752788A (en) * | 2017-11-03 | 2019-05-14 | 桂林电子科技大学 | Hybrid integrated Mach-Zehnder interferes formula optical fiber micro flow chip |
| CN111545145A (en) * | 2020-04-10 | 2020-08-18 | 桂林电子科技大学 | Temperature-controllable fiber integrated micro reaction cavity |
| CN111617683A (en) * | 2020-04-10 | 2020-09-04 | 桂林电子科技大学 | Photothermal microfluidic mixer based on porous optical fiber |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752788A (en) * | 2017-11-03 | 2019-05-14 | 桂林电子科技大学 | Hybrid integrated Mach-Zehnder interferes formula optical fiber micro flow chip |
| CN111545145A (en) * | 2020-04-10 | 2020-08-18 | 桂林电子科技大学 | Temperature-controllable fiber integrated micro reaction cavity |
| CN111617683A (en) * | 2020-04-10 | 2020-09-04 | 桂林电子科技大学 | Photothermal microfluidic mixer based on porous optical fiber |
| CN111617683B (en) * | 2020-04-10 | 2022-04-19 | 桂林电子科技大学 | Photothermal microfluidic mixer based on porous optical fiber |
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