A method for processing optical fiber coding by taper-drawing fiber rod

Abstract

The present invention discloses a method for processing optical fiber coding by taper drawing of a fiber rod, comprising the following steps: processing the optical fiber rod in sections: coating the end face of the optical fiber rod with multiple reflective films of different center wavelengths arranged at intervals, wherein the multiple reflective films constitute the first optical fiber coding; connecting the optical fiber rods of different sections in sequence from the end face, and fusing them under high temperature and high pressure into an optical fiber coding rod with multiple first optical fiber codings; sending the optical fiber coding rod into a high temperature pressure furnace for drawing, and extending it in proportion to obtain an optical fiber coding core with multiple second optical fiber codings. This scheme utilizes the optical fiber reflective film technology, directly coating the end face of the optical fiber rod with an optical fiber reflective film that can reflect a specific center wavelength, and then fusing the segmented fiber rods into one from the end face, and sending them into a high temperature and high pressure furnace for drawing, thereby realizing a long-distance, different center wavelength optical fiber coding processing method, which is convenient for large-scale mechanized and automated processing.

Description

Technical Field

[0001] The invention relates to the field of optical fiber communication, and in particular to a method for processing optical fiber coding by taper-drawing a fiber rod. Background Art

[0002] Traditional fiber optic coding replication mainly adopts the fiber optic replication method, among which replication on short-distance optical fiber is commonly used. As for the technology of replicating fiber optic coding on long-distance optical fiber, the existing solution is to use the fiber optic rod in the fiber drawing tower to draw the optical fiber into optical fiber and then replicate the fiber optic coding synchronously.

[0003] The short-distance optical fiber direct replication technology cannot meet the existing needs for long-distance optical fiber coding. If optical fiber coding of long-distance optical fiber is required, this technology requires the optical fiber coding of multiple short-distance optical fibers to be fused and connected in series to form the optical fiber coding of long-distance optical fiber. This technology has problems such as increased process steps, increased fusion loss, and the fusion points are difficult to protect and easy to be damaged.

[0004] Long-distance optical fiber replication technology replicates the optical fiber code when drawing in the drawing tower. Due to the influence of drawing speed and other factors, the existing technology can only replicate the optical fiber code of the same wavelength.

[0005] The above two methods cannot realize the automatic processing of optical fiber coding with long distance and different central wavelengths, which seriously limits the application of optical fiber coding technology. Therefore, a relatively simple method is needed to realize the optical fiber coding processing method with long distance and different central wavelengths, so as to break through the existing optical fiber coding processing method and realize large-scale mechanized and automated processing. Summary of the invention

[0006] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a method for processing optical fiber coding by taper-drawing a fiber rod, which can realize a method for processing optical fiber coding of long distance and different central wavelengths.

[0007] A method for processing optical fiber coding by taper-forming a fiber rod according to an embodiment of the present invention comprises the following steps:

[0008] Segmented processing of the optical fiber rod: coating the end face of the optical fiber rod with multiple reflective films arranged at intervals and with different central wavelengths, wherein the multiple reflective films constitute a first optical fiber code;

[0009] The optical fiber rods of different sections are sequentially connected from the end faces, and are fused under high temperature and high pressure to form an optical fiber coded fiber rod having multiple first optical fiber codes;

[0010] The optical fiber coding fiber rod is sent into a high-temperature pressure furnace for drawing, and is extended in equal proportion to obtain an optical fiber coding fiber core having multiple second optical fiber codes.

[0011] A method for processing optical fiber coding by taper-drawing a fiber rod according to an embodiment of the present invention has at least the following beneficial effects: This scheme utilizes optical fiber reflective film technology to directly coat the end face of the optical fiber rod with an optical fiber reflective film that can reflect a specific central wavelength. The optical fiber reflective film has the advantage of being able to merge with the optical fiber medium, while also being able to be spray-coated and having extremely thin thickness and ductility. It is particularly suitable for being directly dissolved in the fiber rod and directly processed into optical fiber coding. The segmented fiber rods are then fused together from the end faces and sent into a high-temperature and high-pressure furnace for drawing, thereby realizing a method for processing optical fiber coding over long distances and at different central wavelengths, and facilitating large-scale mechanized and automated processing.

[0012] According to some embodiments of the present invention, it further includes determining a proportional stretch coefficient k, k=R / R0, wherein R is the diameter of the optical fiber coding rod, and R0 is the diameter of the optical fiber coding core.

[0013] According to some embodiments of the present invention, the method further includes determining an interval N00 between adjacent second optical fiber codes by setting an interval N00 between adjacent first optical fiber codes to L00, where L00 = N00 / k.

[0014] According to some embodiments of the present invention, the further step includes determining the reflective film thickness N01 of the second optical fiber code by setting the reflective film thickness of the first optical fiber code to L01, where L01=N01 / k.

[0015] According to some embodiments of the present invention, the further step includes determining the reflective film spacing N02 of the second optical fiber code by setting the reflective film spacing of the first optical fiber code to L02, where L02 = N02 / k.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 It is a flow chart of a method for processing optical fiber encoding by taper-drawing a fiber rod according to an embodiment of the present invention;

[0019] Figure 2 This is a schematic diagram of drawing an optical fiber coding fiber rod into an optical fiber coding core according to an embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of an optical fiber coding fiber rod according to an embodiment of the present invention;

[0021] Figure 4 This is a side view of the optical fiber coding fiber rod according to an embodiment of the present invention. DETAILED DESCRIPTION

[0022] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0024] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0025] refer to Figures 1 to 4 As shown, a method for processing optical fiber coding by taper-drawing a fiber rod in an embodiment of the technical solution includes the following steps:

[0026] Segmented processing of the optical fiber rod 100: coating the end face of the optical fiber rod 100 with multiple reflective films 101 arranged at intervals and with different central wavelengths, the reflective film thickness is L01, the reflective film interval is L02, the multiple reflective films 101 constitute a first optical fiber code 110, and the reflective film interval between adjacent first optical fiber codes 110 is L00;

[0027] After coating multiple layers of reflective films 101 with different central wavelengths, different sections of optical fiber rods 100 are sequentially butted from the end faces and fused under high temperature and high pressure into an optical fiber coded fiber rod 100 having multiple first optical fiber codes 110;

[0028] The optical fiber coded fiber rod 100 is sent to a high-temperature pressure furnace 200 for drawing. The lower end outlet of the high-temperature pressure furnace 200 is tapered for easy drawing. The high temperature softens the optical fiber coded fiber rod 100. Under pressure conditions, the optical fiber coded fiber rod 100 is drawn into an optical fiber directly of R0. Since the optical fiber coded fiber rod 100 is only softened, the structural morphology of its optical fiber braid does not change. After high-temperature pressure drawing, it is proportionally extended to obtain an optical fiber coded fiber core 300 with multiple second optical fiber codes 310.

[0029] It can be seen that this scheme uses the optical fiber reflective film technology to directly coat the end face of the optical fiber rod 100 with an optical fiber reflective film that can reflect a specific central wavelength. The optical fiber reflective film has the advantage of being able to merge with the optical fiber medium, and at the same time can be spray-coated and has the characteristics of extremely thin thickness and ductility. It is particularly suitable for being directly dissolved in the fiber rod 100 and directly processed into optical fiber coding. The segmented fiber rod 100 is then welded into one from the end face and sent into a high-temperature and high-pressure furnace for drawing, thereby realizing a long-distance, different central wavelength optical fiber coding processing method, which is convenient for large-scale mechanized and automated processing.

[0030] In particular, in some embodiments of the present invention, it also includes determining a proportional extension coefficient k, k=R / R0, wherein R is the diameter of the optical fiber coding fiber rod 100, and R0 is the diameter of the optical fiber coding fiber core 300.

[0031] Further, using the proportional stretch coefficient k, in some embodiments of the present invention, it also includes determining the interval N00 of adjacent second optical fiber codes, by setting the interval of adjacent first optical fiber codes to L00, L00 = N00 / k, and stretching will occur after drawing in the high-temperature pressure furnace 200, thereby obtaining the interval N00 of adjacent second optical fiber codes.

[0032] Furthermore, by utilizing the proportional stretch coefficient k, in some embodiments of the present invention, it also includes determining the reflective film thickness N01 of the second optical fiber encoding, by setting the reflective film thickness N01 of the first optical fiber encoding to L01, L01=N01 / k, stretching will also occur after drawing in the high-temperature pressure furnace 200, thereby obtaining the reflective film thickness N01 of the second optical fiber encoding.

[0033] Furthermore, by utilizing the proportional stretch coefficient k, in some embodiments of the present invention, it also includes determining the reflective film spacing N02 of the second optical fiber code, by setting the reflective film spacing of the first optical fiber code to L02, L02 = N02 / k, and stretching will also occur after drawing in the high-temperature pressure furnace 200, thereby obtaining the reflective film spacing N02 of the second optical fiber code.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A method for processing optical fiber coding by taper-drawing a fiber rod, characterized in that: The following steps are involved: Segmented processing of the optical fiber rod: coating the end face of the optical fiber rod with multiple reflective films arranged at intervals and with different central wavelengths, wherein the multiple reflective films constitute a first optical fiber code; The optical fiber rods of different sections are sequentially connected from the end faces, and are fused under high temperature and high pressure to form an optical fiber coded fiber rod having multiple first optical fiber codes; The optical fiber coding fiber rod is sent into a high-temperature pressure furnace for drawing, and is extended in equal proportion to obtain an optical fiber coding fiber core having multiple second optical fiber codes.

2. The method for processing optical fiber coding by fiber rod taper according to claim 1, characterized in that: The method also includes determining a proportional extension coefficient k, k=R / R0, wherein R is the diameter of the optical fiber coding rod, and R0 is the diameter of the optical fiber coding core.

3. The method for processing optical fiber coding by fiber rod taper according to claim 2, characterized in that: The method further includes determining an interval N00 between adjacent second optical fiber codes by setting an interval N00 between adjacent first optical fiber codes to L00, where L00 = N00 / k.

4. The method for processing optical fiber coding by fiber rod taper according to claim 2, characterized in that: It also includes determining the reflective film thickness N01 of the second optical fiber code by setting the reflective film thickness of the first optical fiber code to L01, L01=N01 / k.

5. The method for processing optical fiber coding by fiber rod taper according to claim 2, characterized in that: It also includes determining the reflective film spacing N02 of the second optical fiber code by setting the reflective film spacing of the first optical fiber code to L02, L02 = N02 / k.

Images