TW201416738A - Fabrication of fiber optical tweezers - Google Patents

Abstract

The invention relates to a fabrication of a fiber optical tweezers. Primary, it comprises the following steps: severing an appropriate length of an optical fiber and peeling the cladding layer of the optical fiber through a peeling step; cleaning the optical fiber through a cleaning step; cutting one end face of the optical fiber to allow it to be flattened through a cutting step; fixing the optical fiber, adding a buffer oxide etch into a container and placing the fixed optical fiber above the container or on one side of the container, and then the end of the optical fiber will be formed as a taper shape after it is dipped in the buffer oxide etch to proceed with etching through a etching step; melting the taper end of the optical fiber through a microlens processing step by means of electric arcs out from a two-terminal device so that the optical fiber will be formed as a hemispherical lensed fiber to complete the fabrication. Accordingly, it is easier and more convenient for the whole fabrication, and it can also lower the fabrication costs. Furthermore, it has high capture efficiency and low capture power to be more convenient to be applied to the field of biomedicine, so as to increase the practicability and efficiency for the whole implementation.

Description

Fiber optic optical clamp process

The invention relates to a process for optical fiber optical clamping, in particular to a simpler overall manufacturing, and can reduce the manufacturing cost thereof, and has high capturing efficiency and low capturing power in use, which makes it more convenient. An innovative manufacturer of fiber optic optical clips for applications in the biomedical field and for the practical use of their applications.

Press, optical clamp (also known as optical clamp) refers to the use of light or light energy to capture tiny objects, which is a non-contact capture fixture, so that the captured object can not only avoid the deformation caused by the contact clamp, Scratches or damage can occur, and can also be manipulated with low interference, and observe the behavior of microorganisms, cells or blood cells in the living body.

The optical clamps are generally mainly classified into two types: a lenticular type and an optical fiber type; wherein the lenticular optical clamping system is constructed by a plurality of optical components, so that the overall system construction is complicated and the handling is poor. The cost is relatively expensive, and the system needs to adjust each optical component repeatedly, so that the optical path advances according to the path of the experimental design, and if other optical components are added, the system becomes more complicated, and the adjustment of the optical axis is relatively difficult, plus Occupying a large physical space, and its high laser output power, easy to damage the captured objects of living cells, so that there is still room for improvement in the overall structural design.

As for the optical fiber optical clamp, the physical space is smaller than that of the lenticular optical clamp, the operation zero activity is higher, and the cost is lower; therefore, on October 11, 2005, there is a publication No. I241421 "Manufacturing Double "Method of Curved Fiber Lens" and in the "Study on Elliptical Fiber Microlens" of the Institute of Optoelectronic Engineering, National University of Sun Yat-sen University in 2006, Mr. Ye Siming, the fiber-optic coupling of laser light and fiber coupling is applied in the field of communication. The lens processing method, but the etching liquid used is a mixture of hydrofluoric acid and engine oil [HF/oil], and the etching liquid is required to be blended in the manufacturing process, and the oil remaining on the optical fiber is further cleaned to increase the processing time. And difficulty; in addition, its main application in the field of communication laser light and fiber coupling matching, can not be directly applied to fiber optic optical clamping system.

In addition, in 2009, Mr. Chen Guoliang's master's thesis of the Institute of Optoelectronics and Communication Engineering of the National Kaohsiung University of Applied Sciences, "Development of Fiber Optic Optical Clamps", was inspired by the above process technology to change the etching solution and etching parameters used in the process. And the processed fiber end face conforms to the application of the optical clamp; however, since the process time is too long and the optical fibers used are optical clamps of the multi-mode optical fiber (MMF), the output laser light generates multi-mode, and The required laser light power is high, and it is not suitable for living body capture in the field of biomedicine.

In addition, in 2011, Mr. Chen Wenbao’s master's thesis of the Institute of Optoelectronics and Communication Engineering of the National Kaohsiung University of Applied Sciences, “Study on the application of fiber optic optical clamps to capture microparticles and yeasts”, has proposed single-mode fiber [SMF]. The optical clamp solves the modal problem, but the process method is still time consuming, and the effect of the fiber-optic waveguide after processing is not good, resulting in a large loss of output laser light, so that the output power is still high, and the production yield is also high. Low.

The reason is that the inventor has been carrying out research and development and practical production experience of the relevant industry for many years, and has researched and improved the existing structure to provide a process for optical fiber optical clamping, in order to achieve better practical value.

The main object of the present invention is to provide a process for optical fiber optical clamping, which is simpler in overall manufacturing, can reduce the manufacturing cost thereof, and has high capturing efficiency and low capturing power in use, which makes it more convenient. It is applied in the field of biomedicine, and it is more practical and useful in its overall application.

The main purpose and effect of the process of the optical fiber optical clamp of the present invention are achieved by the following specific technical means:

Its main steps include the following steps:

Stripping: cutting the fiber of the appropriate length, and stripping the fiber layer of the fiber and leaking the core layer [Core];

Cleaning: clean the fiber;

Cutting: flattening the end face of the core layer of the optical fiber;

Etching: the optical fiber is fixed, an oxide buffering etchant (Buffer Oxide Etch, BOE) is added to a container, and the fixed fiber is disposed corresponding to the container, so that the end of the core of the fiber to be processed is immersed in the oxide buffer etching. The liquid is etched, and the end of the core layer of the optical fiber forms a tapered shape;

Microlens processing: The end of the cone-shaped fiber core layer (Core) is melted by a two-end arc device to form a hemispherical lensized fiber, which is completed.

A preferred embodiment of the process for fabricating a fiber optic optical clip of the present invention, wherein the stripping step utilizes an optical fiber stripper to cut and strip the fiber.

In a preferred embodiment of the process of the optical fiber optical chuck of the present invention, the cutting step is to cut and planarize the end face of the core layer of the optical fiber by using a fiber cutter.

A preferred embodiment of the process for fabricating the optical fiber optical chuck of the present invention, wherein the container used in the etching step is made of polypropylene.

A preferred embodiment of the process for the optical fiber optical chuck of the present invention, wherein the oxide buffering etching solution used in the etching step is diluted with 40% ammonia fluoride [NH ₄ F] and diluted with water by water. The two hydrofluoric acid liquids are prepared in a 6:1 manner.

A preferred embodiment of the process of the optical fiber optical chuck of the present invention, wherein the etching step is to place the fixed optical fiber on the upper side of the container, so that the end of the core layer of the optical fiber to be processed is immersed in the oxide buffer etchant for vertical Etching.

A preferred embodiment of the process of the optical fiber optical chuck of the present invention, wherein the etching step is to place the fixed fiber on the side of the container, so that the end of the core layer of the fiber to be processed is immersed in the oxide buffer etchant. Horizontal etching.

A preferred embodiment of the process of the optical fiber optical chuck of the present invention, wherein the observation step is performed after the etching step, and the metal core microscope is used to observe whether the end of the core layer of the optical fiber is tapered, and if successful, it can be performed. The next step, if it fails, is directly considered as scrap.

In a preferred embodiment of the process for fabricating the optical fiber optical chuck of the present invention, the observation step can directly perform an optical capture experimental test after observing the end of the core layer of the optical fiber by a metallographic microscope.

In a preferred embodiment of the process for the optical fiber optical chuck of the present invention, the observation step is performed after the microlens processing step, and the core end of the core layer of the optical fiber is observed by a metallographic microscope, and an optical capture experiment is performed.

For a more complete and clear disclosure of the technical content, the purpose of the invention and the effects thereof achieved by the present invention, it is explained in detail below, and please refer to the drawings and drawings:

First, please refer to the first figure, which shows the schematic diagram of the production process of the present invention. The present invention mainly includes the following steps:

Stripping: using a fiber stripper to cut the appropriate length of the fiber (1), and stripping the fiber layer (11) of the fiber (1) and leaking the core layer (Core) (12);

Cleaning: clean the fiber (1);

Cutting: the end face of the core layer (Core) (12) of the optical fiber (1) is flattened by a fiber cutter;

Etching: the optical fiber (1) is fixed, and an oxide buffer etchant (Buffer Oxide Etch, BOE) (3) is added to a container (2) of a polypropylene material. The oxide buffer etchant (3) is made of water. Diluting 40% of ammonium fluoride [NH ₄ F] and 49% of hydrofluoric acid diluted with water to prepare a 6:1 solution, and placing the fixed fiber (1) above the container (2) Or the side, so that the end of the core layer (12) of the fiber (1) to be processed is immersed in the oxide buffer etchant (3) for vertical etching, and the core layer of the fiber (1) is (Core) ( 12) Vertically immersed in the oxide buffer etchant (3) (please refer to the second diagram of the optical fiber vertical etch state operation diagram (1) of the present invention), the core layer of the optical fiber (1) (Core) ( 12) The end will form a tapered shape (please refer to the third figure for the operation of the optical fiber vertical etching state of the present invention (2) and the fourth figure of the present invention. The etched state operation diagram (3) is shown; the present invention can also make the core layer [Core] (12) of the optical fiber (1) horizontally immersed in the oxide buffer etchant (3) for horizontal etching [please refer to Fig. 5 is a schematic view showing the operation of the horizontal etching state of the optical fiber of the present invention (1), and the end of the core layer (Core) of the optical fiber (1) is also formed into a tapered shape (please refer to the sixth figure together) The schematic diagram of the optical horizontal etching state of the invention (2) and the seventh diagram of the optical horizontal etching state of the present invention (3) is shown;

Observation: Observe the end of the core layer (Core) (12) of the fiber (1) by a metallographic microscope. If it is successful, proceed to the next step, or directly perform the optical capture test. If it fails, it is directly regarded as Waste product

Microlens processing: the end of the fiber (1) core layer (Core) (12) is melted by the arc device at both ends (please refer to the eighth figure for the operation of the fiber melt state of the present invention (1) </ RTI> shown to form a hemispherical lensed fiber (1) [please refer to the ninth figure of the present invention for the operation of the fiber melt state diagram (2)];

Observation: The end of the core layer [Core] (12) of the optical fiber (1) was observed by a metallographic microscope, and an optical capture experiment was conducted.

In this way, the light can pass through the optical fiber (1), and the light is refracted through the hemispherical shape at the end of the core layer (Core) of the optical fiber (1), so that the optical fiber (1) is close to the particle. The particles can be captured by the light refracted at the end of the core (Core) (12) of the optical fiber (1) to move the particles to a desired position.

As described above, the composition and use of the structure of the present invention show that the present invention is mainly simpler in overall fabrication than the prior art, and can reduce the manufacturing cost and use thereof. It has high capture efficiency and low capture power, making it more convenient for applications in the biomedical field, and more practical and functional features in its overall implementation.

However, the above-described embodiments or drawings are not intended to limit the structure or the use of the present invention, and any suitable variations or modifications of the invention will be apparent to those skilled in the art.

In summary, the embodiments of the present invention can achieve the expected use efficiency, and the specific structure disclosed therein has not been seen in similar products, nor has it been disclosed before the application, and has completely complied with the provisions of the Patent Law. And the request, the application for the invention of a patent in accordance with the law, please forgive the review, and grant the patent, it is really sensible.

(1). . . optical fiber

(11). . . Fiber coating

(12). . . Core layer

(2). . . container

(3). . . Oxide buffer etchant

First: Schematic diagram of the production process of the present invention

Second: Schematic diagram of the operation of the optical etched state of the optical fiber of the present invention (1)

Third: Schematic diagram of the operation of the optical etched state of the optical fiber of the present invention (2)

Figure 4: Schematic diagram of the vertical etched state of the optical fiber of the present invention (3)

Fig. 5 is a schematic view showing the action of the horizontal etching state of the optical fiber of the present invention (1)

Figure 6: Schematic diagram of the horizontal etching state of the optical fiber of the present invention (2)

Figure 7: Schematic diagram of the horizontal etching state of the optical fiber of the present invention (3)

Figure 8: Schematic diagram of the action of the fiber-melting state of the present invention (1)

Ninth diagram: Schematic diagram of the operation of the fiber-melting state of the present invention (2)

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Claims (10)

A process for optical fiber optical clamping, which mainly comprises the following steps:
Stripping: cutting the fiber of the appropriate length, and stripping the fiber layer of the fiber and leaking the core layer [Core];
Cleaning: clean the fiber;
Cutting: flattening the end face of the core layer of the optical fiber;
Etching: the optical fiber is fixed, an oxide buffering etchant (Buffer Oxide Etch, BOE) is added to a container, and the fixed fiber is disposed corresponding to the container, so that the end of the core of the fiber to be processed is immersed in the oxide buffer etching. The liquid is etched, and the end of the core layer of the optical fiber forms a tapered shape;
Microlens processing: The end of the cone-shaped fiber core layer (Core) is melted by a two-end arc device to form a hemispherical lensized fiber, which is completed. The process of the optical fiber optical clip according to claim 1, wherein the stripping step is to cut and remove the fiber layer by using a fiber stripper. The process of the optical fiber optical chuck according to claim 1, wherein the cutting step is to cut and planarize the end face of the core of the optical fiber by using a fiber cutter. The process of the optical fiber optical chuck according to claim 1, wherein the container used in the etching step is made of polypropylene material. The process of the optical fiber optical chuck according to claim 1, wherein the oxide buffering etching solution used in the etching step is a 40% ammonia fluoride [NH ₄ F] and water passing through water. The two liquids diluted with 49% hydrofluoric acid were prepared in a 6:1 manner. The process of the optical fiber optical chuck according to claim 1, wherein the etching step is to place the fixed fiber above the container, so that the end of the core layer of the fiber to be processed is immersed in the oxide buffer etchant. Perform vertical etching. The process of the optical fiber optical chuck according to claim 1, wherein the etching step is to place the fixed fiber on the side of the container, so that the end of the core layer of the fiber to be processed is immersed in the oxide buffer etching. The liquid is etched horizontally. The process of the optical fiber optical chuck according to the first aspect of the invention, wherein the observing step is performed after the etching step, and the end of the core layer of the optical fiber is observed by a metallographic microscope, and if successful, The next step can be taken, and if it fails, it is directly considered as scrap. For example, in the process of the optical fiber optical clip according to Item 6 of the patent application, the observation step can directly perform the optical capturing experimental test after observing the end of the core layer of the optical fiber by the metallographic microscope. The process of the optical fiber optical clip according to the first aspect of the patent application, wherein the observation step is performed after the microlens processing step, and the core end of the core layer of the optical fiber is observed by a metallographic microscope, and an optical capturing experiment is performed. test.