CN202330268U - Full-fiber, double-micro-ring and high-sensitivity sensor - Google Patents
Full-fiber, double-micro-ring and high-sensitivity sensor Download PDFInfo
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- CN202330268U CN202330268U CN201120462192XU CN201120462192U CN202330268U CN 202330268 U CN202330268 U CN 202330268U CN 201120462192X U CN201120462192X U CN 201120462192XU CN 201120462192 U CN201120462192 U CN 201120462192U CN 202330268 U CN202330268 U CN 202330268U
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- 239000000835 fiber Substances 0.000 title claims abstract description 52
- 239000013307 optical fiber Substances 0.000 claims abstract description 34
- 239000002121 nanofiber Substances 0.000 claims description 97
- 238000005253 cladding Methods 0.000 claims description 15
- 239000012792 core layer Substances 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000004891 communication Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 238000004806 packaging method and process Methods 0.000 abstract 1
- 230000010287 polarization Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 18
- 238000000137 annealing Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 6
- 230000003287 optical effect Effects 0.000 description 5
- 230000001953 sensory effect Effects 0.000 description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 238000010257 thawing Methods 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 230000008033 biological extinction Effects 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000000382 optic material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
全光纤双微环高灵敏度传感器是基于第一、第二根锥形微纳光纤制作出的二个微环形腔(31、32)级联的器件，在第一根锥形微纳光纤锥腰的前端部分(14)制作第一个微环形腔(31)并在其锥腰的中间部分(13)弯成一个半圆，形成一个U形；在第二根锥形微纳光纤锥腰中间部分(23)直接弯成一个半圆，形成一个U形，并与第一根微纳光纤的U形部分重叠，利用两根光纤之间的吸引力，形成第二个微环形腔(32)，该器件属于光纤通信、光纤传感领域。本实用新型制作工艺简单、灵活，能够很好与通信光纤匹配，减小连接损耗，具有插损低、无偏振依赖性、封装容易等优点，而且由于不需要特殊的材料和昂贵的设备，制作成本较低，且测量精度较高，测量范围较宽。
The all-fiber double micro-ring high-sensitivity sensor is a cascaded device based on two micro-ring cavities (31, 32) made by the first and second tapered micro-nano optical fibers. The front end part (14) makes the first micro-annular cavity (31) and bends into a semicircle at the middle part (13) of its tapered waist, forming a U shape; (23) Bend directly into a semicircle to form a U shape, and overlap with the U-shaped part of the first micro-nano optical fiber, utilize the attraction force between the two optical fibers to form a second micro-ring cavity (32), the The device belongs to the fields of optical fiber communication and optical fiber sensing. The utility model has a simple and flexible manufacturing process, can be well matched with communication optical fibers, reduces connection loss, has the advantages of low insertion loss, no polarization dependence, and easy packaging, and does not require special materials and expensive equipment. The cost is low, the measurement accuracy is high, and the measurement range is wide.
Description
Technical field
The utility model relates to the two little ring high sensors of full optical fiber, belongs to optical fiber communication, sensory field of optic fibre.
Background technology
Based on the fiber waveguide device of micro-ring resonator (being called for short little ring) have that volume is little, function is strong, simple for structure etc. advantage; It is closely integrated to be very suitable for extensive monolithic; Simultaneously can realize comprising functional units such as wave filter, delayer, buffer, wavelength multiplexing/demultiplexing and sensor, powerful.At biochemical field, not only possess high-sensitive sensing characteristics based on the sensor of little ring, and have accurate central task wavelength, smooth passband, low-loss, High Extinction Ratio, big characteristics such as dynamic range.Active and the passive device that utilizes little ring to make is being brought into play great function in optical fiber communication and sensory field of optic fibre always.
At present, mainly concentrating on slab guide sensing measurement and Fibre Optical Sensor to the sensor of biological chemistry sensory field measures this two quasi-optical wave and leads measurement.Biochemical sensor based on slab guide plates one deck sensitive membrane responsive to measuring media based on the surface; Difference through measuring sensitive membrane is measured sensor information; This sensor based on slab guide is easy to integrated; But it is subject to the interference of external environment such as electromagnetic field etc., and measuring accuracy is not high yet.Biochemical sensor based on optical fiber is to measure sensor information through the output spectrum of analyzing in different sensor informations; This sensor is not subject to the interference of external environments such as electromagnetic field; And can under high temperature, high chemical reaction condition, work, fiber optic materials is nontoxic simultaneously, bio-compatibility good.Current optical fibre bio chemical sensor mainly contains many fibre bundles sensor, fiber-optic grating sensor and Dan Weihuan Fibre Optical Sensor; Wherein many fibre bundles sensor and fiber-optic grating sensor sensitivity are not high; And be not easy to integrated; Though and that the Dan Weihuan Fibre Optical Sensor is easy to is integrated, its measurement range is not wide.
The utility model content
The utility model technical matters to be solved is to present full Fibre Optical Sensor is not high at the sensing sensitivity of biological chemistry sensory field, measurement range little, be not easy to integrated problem, thereby has proposed a kind of two micro-ring sensors of highly sensitive full optical fiber that have.
The technical scheme that its problem of the utility model technical solution is adopted is:
The two little ring high sensors of this full optical fiber are to make first little ring cavity at the fore-end of first taper micro-nano fiber awl waist, and the center section of boring waist at first taper micro-nano fiber curves a semicircle, forms a U-shaped.
Center section at second taper micro-nano fiber awl waist directly curves a semicircle, forms a U-shaped, curves the shape of U-shaped, and overlaps with the U-shaped of first micro-nano fiber, utilizes two attractive forces between the optical fiber, forms second little ring cavity.
Core diameter, the refractive index at the two ends of first taper micro-nano fiber and the two ends of second taper micro-nano fiber are identical; Cladding diameter, refractive index are identical; Core diameter is 4 to 10 μ m; Cladding diameter is 125 μ m, and fiber core refractive index is 1.446 to 1.45, and the refractive index contrast of cladding index and fiber core refractive index is 0.1% to 1%.
The equal diameters of first taper micro-nano fiber awl waist portions and second taper micro-nano fiber awl waist portions.
Whole optical fiber is sandwich layer in first taper micro-nano fiber awl waist portions and the second taper micro-nano fiber awl waist portions.
The radius of first little ring cavity and second little ring cavity is identical or inequality.
The beneficial effect that the utility model had is following:
The utility model provides the two little ring high sensors of a kind of full optical fiber.This sensor is based on the full Fibre Optical Sensor device of two little ring cascades; It has that volume is little, function is strong, simple for structure etc. advantage; It is closely integrated to be very suitable for extensive monolithic; Not only possess highly sensitive characteristic, and have accurate central task wavelength, smooth passband, low-loss, High Extinction Ratio, big characteristics such as dynamic range.Compare with other full fiber type sensors based on the chemical-biological field, the utility model has further improved the sensing sensitivity and the measurement range of sensor, and is easy to integrated.
Description of drawings
Fig. 1 is the structural representation of the two little ring high sensors of full optical fiber.
Fig. 2 is the structural representation of first, second root taper micro-nano fiber.
Fig. 3 is the A-A sectional view of Fig. 2.
Fig. 4 is the B-B sectional view of Fig. 2.
Fig. 5 is first structural representation that has the taper micro-nano fiber of first ring cavity and U-shaped.
Fig. 6 is second structural representation that has the taper micro-nano fiber of U-shaped.
Fig. 7 draws the awl platform for fiber fuse.
Embodiment
Below in conjunction with accompanying drawing the utility model is described further.
Embodiment one
The two little ring high sensors of this full optical fiber; As shown in Figure 1; Be to make first little ring cavity 31 at the fore-end 14 of first taper micro-nano fiber awl waist, the center section 13 of boring waist at first taper micro-nano fiber curves a semicircle, forms a U-shaped.
Directly curve a semicircle at second taper micro-nano fiber awl waist center section 23, form a U-shaped, and overlap, utilize two attractive forces between the optical fiber, form second little ring cavity 32 with the U-shaped of first micro-nano fiber.
Core diameter, the refractive index at the two ends 11,12 of first taper micro-nano fiber and the two ends 21,22 of second taper micro-nano fiber are identical; Cladding diameter, refractive index are identical; Core diameter is 4 to 10 μ m; Cladding diameter is 125 μ m, and fiber core refractive index is 1.446 to 1.45, and the refractive index contrast of cladding index and fiber core refractive index is 0.1% to 1%.
The equal diameters of the rear end part 25 of the fore-end 24 of the rear end part 15 of the fore-end 14 of the center section 13 of first taper micro-nano fiber awl waist, first taper micro-nano fiber awl waist, first taper micro-nano fiber awl waist and the center section of second taper micro-nano fiber awl waist 23, second taper micro-nano fiber awl waist, second taper micro-nano fiber awl waist.
Whole optical fiber is sandwich layer in the rear end part 25 of the fore-end 24 of the rear end part 15 of the front end 14 of the center section 13 of first taper micro-nano fiber awl waist, first taper micro-nano fiber awl waist, first taper micro-nano fiber awl waist and the center section of second taper micro-nano fiber awl waist 23, second taper micro-nano fiber awl waist, second taper micro-nano fiber awl waist.
The radius of first little ring cavity 31 and second little ring cavity 32 is identical or inequality.
Embodiment two
The difference of embodiment two and embodiment one:
The diameter of the sandwich layer at the two ends 21,22 of 11, the 12 and second taper micro-nano fibers in two ends of first taper micro-nano fiber is 10 μ m, and refractive index is 1.45, and the diameter of its covering is 125 μ m, and the refractive index contrast of cladding index and fiber core refractive index is 1%.
Fore-end 14 at first taper micro-nano fiber awl waist is made first little ring cavity 31; The radius of little ring cavity 31 is 100 μ m, and the center section 13 of boring waist at first taper micro-nano fiber curves a semicircle, forms a U-shaped; Its radius-of-curvature is 100 μ m, and is as shown in Figure 5.
Directly curve a semicircle at second taper micro-nano fiber awl waist center section 23, form U-shaped, its radius-of-curvature is 100 μ m, and is as shown in Figure 6.
The radius of first little ring cavity 31 and second little ring cavity 32 is 100 μ m.
Embodiment three
The difference of embodiment three and embodiment one:
The diameter of the sandwich layer at the two ends 21,22 of 11, the 12 and second taper micro-nano fibers in two ends of first taper micro-nano fiber is 4 μ m; Refractive index is 1.446; The diameter of its covering is 125 μ m, and the refractive index contrast of cladding index and fiber core refractive index is 0.1%.
Fore-end 14 at first taper micro-nano fiber awl waist is made first little ring cavity 31; The radius of little ring cavity 31 is 150 μ m, and the center section 13 of boring waist at first taper micro-nano fiber curves a semicircle, forms a U-shaped; Its radius-of-curvature is 160 μ m, and is as shown in Figure 5.
Directly curve a semicircle at second taper micro-nano fiber awl waist center section 23, form U-shaped, its radius-of-curvature is 160 μ m, and is as shown in Figure 6.
The radius of first little ring cavity 31 is 150 μ m, and the radius of second little ring cavity 32 is 160 μ m.
Embodiment four
The difference of embodiment four and embodiment one:
The diameter of the sandwich layer at the two ends 21,22 of 11, the 12 and second taper micro-nano fibers in two ends of first taper micro-nano fiber is 7 μ m; Refractive index is 1.448; The diameter of its covering is 125 μ m, and the refractive index contrast of cladding index and fiber core refractive index is 0.5%.
Fore-end 14 at first taper micro-nano fiber awl waist is made first little ring cavity 31; The radius of little ring cavity 31 is 120 μ m, and the center section 13 of boring waist at first taper micro-nano fiber curves a semicircle, forms a U-shaped; Its radius-of-curvature is 125 μ m, and is as shown in Figure 5.
Directly curve a semicircle at second taper micro-nano fiber awl waist center section 23, form U-shaped, its radius-of-curvature is 125 μ m, and is as shown in Figure 6.
The radius of first little ring cavity 31 is 120 μ m, and the radius of second little ring cavity 32 is 125 μ m.
First kind of manufacturing process of first taper micro-nano fiber and second micro-nano fiber may further comprise the steps:
The single-mode fiber that it is 5cm that step 1 is got two length, the diameter of its sandwich layer are 10 μ m, and refractive index is 1.45, and the diameter of its covering is 125 μ m, and the refractive index contrast of cladding index and fiber core refractive index is 1%.
Step 2 is put into fiber fuse with a single-mode fiber and is drawn the awl platform, and the two ends of clamping single-mode fiber with clip 42,43.
Step 3 is lighted torch 44, and the center section of the 44 thawing single-mode fibers that apply a torch is afterwards controlled mobile platform 41 simultaneously and outwards moved, and the translational speed of mobile platform 41 is 0.085mm/s.
Step 4 is in control mobile platform 41, and control torch 44 moves around, and the translational speed of torch 44 is 0.082mm/s.
When step 5 is 5 μ m when the diameter of the awl waist portions of single-mode fiber, stop to move of torch and mobile platform, and the fire of torch is extinguished and removes, process a taper micro-nano fiber.
The taper micro-nano fiber that step 6 is processed step 5 carries out annealing in process.
The front end 14 of the awl waist portions of the taper micro-nano fiber of step 7 after annealing in process utilizes and produces first little ring cavity 31 from the winding method, as the little ring of the sensing of sensor; Its radius is 100 μ m, simultaneously, carries out bending at the middle part 13 of this taper micro-nano fiber; And curve a semicircle; Form a U-shaped, its radius-of-curvature is 100 μ m, processes first taper micro-nano fiber.
Step 8 repeating step two to five with another root single-mode fiber, is made into another root taper micro-nano fiber.
Step 9 is carried out bending at the middle part 23 of taper micro-nano fiber, and curves a semicircle, forms another U-shaped, and its radius-of-curvature is 100 μ m, processes second taper micro-nano fiber.
The U-shaped of second taper micro-nano fiber is partially overlapped in the U-shaped part of first taper micro-nano fiber, form second little ring cavity 32, as the little ring of the reference of sensor, its radius is 100 μ m.
The two ends 11,12 of first taper micro-nano fiber, its micro-nano part 13,14,15; The two ends 21,22 of second taper micro-nano fiber, its micro-nano part 23,24,25 and first, second little ring cavity 31,32 form the two little ring high sensors of a full optical fiber.
Second kind of manufacturing process of first taper micro-nano fiber and second micro-nano fiber may further comprise the steps:
The single-mode fiber that it is 5cm that step 1 is got two length, the diameter of its sandwich layer are 4 μ m, and refractive index is 1.446, and the diameter of its covering is 125 μ m, and the refractive index contrast of cladding index and fiber core refractive index is 0.1%.
Step 2 is put into fiber fuse with a single-mode fiber and is drawn the awl platform, and the two ends of clamping single-mode fiber with clip 42,43.
Step 3 is lighted torch 44, and the center section of the 44 thawing single-mode fibers that apply a torch is afterwards controlled mobile platform 41 simultaneously and outwards moved, and the translational speed of mobile platform 41 is 0.084mm/s.
Step 4 is in control mobile platform 41, and control torch 44 moves around, and the translational speed of torch 44 is 0.082mm/s.
When step 5 is 4.5 μ m when the diameter of the awl waist portions of single-mode fiber, stop torch and mobile platform moves, and the fire of torch is extinguished and removes, process a taper micro-nano fiber.
The taper micro-nano fiber that step 6 is processed step 5 carries out annealing in process.
The front end 14 of the awl waist portions of the taper micro-nano fiber of step 7 after annealing in process utilizes and produces first little ring cavity 31 from the winding method, as the little ring of the sensing of sensor; Its radius is 150 μ m, simultaneously, carries out bending at the middle part 13 of this taper micro-nano fiber; And curve a semicircle; Form a U-shaped, its radius-of-curvature is 160 μ m, processes first micro-nano fiber.
Step 8 repeating step two to five with another root single-mode fiber, is made into another root taper micro-nano fiber.
Step 9 is carried out bending at the middle part 23 of taper micro-nano fiber, and curves a semicircle, forms another U-shaped, and its radius-of-curvature is 160 μ m, processes second micro-nano fiber.
The U-shaped of second taper micro-nano fiber is partially overlapped in the U-shaped part of first taper micro-nano fiber, form second little ring cavity 32 in addition, as the little ring of the reference of sensor, its radius is 160 μ m.
The two ends 11,12 of first taper micro-nano fiber, its micro-nano part 13,14,15; The two ends 21,22 of second taper micro-nano fiber, its micro-nano part 23,24,25 and first, second little ring cavity 31,32 form the two little ring high sensors of a full optical fiber.
The third manufacturing process of first taper micro-nano fiber and second micro-nano fiber may further comprise the steps:
Step 1, the single-mode fiber that to get two length be 5cm, the diameter of its sandwich layer is 7 μ m, and refractive index is 1.448, and the diameter of its covering is 125 μ m, and the refractive index contrast of cladding index and fiber core refractive index is 0.5%.
Step 2 is put into fiber fuse with a single-mode fiber and is drawn the awl platform, and the two ends of clamping single-mode fiber with clip 42,43.
Step 3 is lighted torch 44, and the center section of the 44 thawing single-mode fibers that apply a torch is afterwards controlled mobile platform 41 simultaneously and outwards moved, and the translational speed of mobile platform 41 is 0.085mm/s.
Step 4, in control mobile platform 41, control torch 44 moves around, and the translational speed of torch 44 is 0.082mm/s.
Step 5 when the diameter of the awl waist portions of single-mode fiber is 4 μ m, stops torch and mobile platform moves, and the fire of torch is extinguished and removes, and processes a taper micro-nano fiber.
Step 6, the taper micro-nano fiber that step 5 is processed carries out annealing in process.
Step 7, the front end 14 of the awl waist portions of a taper micro-nano fiber after annealing in process utilizes and produces first little ring cavity 31 from the winding method; As the little ring of the sensing of sensor, its radius is 120 μ m, simultaneously; Bending is carried out at middle part 13 at the taper micro-nano fiber, and curves a semicircle, forms a U-shaped; Its radius-of-curvature is 125 μ m, processes first taper micro-nano fiber.
Step 8, repeating step two to five with another root single-mode fiber, is made into another root taper micro-nano fiber.
Step 9 is carried out bending at the middle part 23 of another root taper micro-nano fiber, and is curved a semicircle, forms another U-shaped, and its radius-of-curvature is 125 μ m, processes second taper micro-nano fiber.
The U-shaped of second taper micro-nano fiber is partially overlapped in the U-shaped part of first taper micro-nano fiber, form second little ring cavity 32 in addition, as the little ring of the reference of sensor, its radius is 125 μ m.
The two ends 11,12 of first taper micro-nano fiber, its micro-nano part 13,14,15; The two ends 21,22 of second taper micro-nano fiber, its micro-nano part 23,24,25 and first, second little ring cavity 31,32 form the two little ring high sensors of a full optical fiber.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841054A (en) * | 2012-09-27 | 2012-12-26 | 复旦大学 | Biochemical sensor of coupled micro-cavity photon molecule |
| CN107907491A (en) * | 2017-12-08 | 2018-04-13 | 金陵科技学院 | A kind of fibre optical sensor and its detection platform and method |
| CN110849934A (en) * | 2019-11-29 | 2020-02-28 | 北京邮电大学 | Material phase change detection method of packaged microcavity based on mode broadening mechanism |
-
2011
- 2011-11-18 CN CN201120462192XU patent/CN202330268U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102841054A (en) * | 2012-09-27 | 2012-12-26 | 复旦大学 | Biochemical sensor of coupled micro-cavity photon molecule |
| CN102841054B (en) * | 2012-09-27 | 2015-07-29 | 复旦大学 | A kind of biochemical sensor of coupled micro-cavity photon molecule |
| CN107907491A (en) * | 2017-12-08 | 2018-04-13 | 金陵科技学院 | A kind of fibre optical sensor and its detection platform and method |
| CN107907491B (en) * | 2017-12-08 | 2023-07-28 | 金陵科技学院 | An optical fiber sensor and its detection platform and method |
| CN110849934A (en) * | 2019-11-29 | 2020-02-28 | 北京邮电大学 | Material phase change detection method of packaged microcavity based on mode broadening mechanism |
| CN110849934B (en) * | 2019-11-29 | 2021-09-24 | 北京邮电大学 | A method for detecting the phase transition of matter based on the mode broadening mechanism of encapsulated microcavity |
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Granted publication date: 20120711 Termination date: 20121118 |