APPARATUS FOR PRODUCING A SELF-SUPPORTING COIL OF DOUBLE OPTICAL FIBERS, RESULTING COIL, AND METHOD OF USING THE APPARATUS

Description

/ 11 APPARATUS FOR PRODUCING A SELF-SUPPORTING COIL OF DOUBLE OPTICAL FIBERS, RESULTING COIL, AND METHOD OF USING THE APPARATUS FIELD OF THE INVENTION

[001] The present invention relates to an apparatus for producing a self-supporting reel of double optical fibers and its method of use, and the resulting reel from the method of use of the apparatus. This apparatus provides means for passing or rewinding optical fibers from at least two reels of optical fibers onto a single self-supporting reel, keeping parallel the rewound length of said original fibers from each reel in said self-supporting reel and detecting the length of both fibers used in the winding, such that the final rewound length of said fibers in the resulting reel is the same. This apparatus, method, and reel shown are applied in equipment containing optical circuits used in sensing or communication via optical fiber. FUNDAMENTALS OF THE AREA AND PROBLEM TO BE SOLVED

[002] In some types of optical circuits used in sensing or fiber optic communication, it is necessary to use one or more emission or delay fibers in the signal to be processed.

[003] These fibers are typically used externally to equipment when continuous use of the equipment is not required. This is the case with optical time-domain reflectometers (OTDRs).

[004] On the other hand, when equipment is used continuously, the aforementioned launch or delay fibers must be embedded within the equipment to ensure reliable operation over time. This is the case with fiber optic interferometry sensing systems.

[005] Some fiber optic interferometry sensing systems use at least two optical fibers to compensate for the time delay of the optical signals to be processed.

[006] In this case, more than guaranteeing operational reliability over time, the signal delay coils must have identical characteristics in that they Petition 870240110382, dated 12 / 26 / 2024, page 8 / 57 / 11 refers to the length required for proper signal processing.

[007] External physical factors such as temperature and vibration can also affect the use of said delay coils.

[008] Another requirement for these coils is that external physical effects occur in the same way in all coils used in the optical circuit for interferometry fiber optic sensing. OBJECTIVE AND ADVANTAGES OF THE INVENTION

[009] The apparatus for producing a self-supporting coil of double optical fibers and the resulting coil, which is the subject of the present invention, aims to create a double optical fiber coil in which both fibers in the coil have the same length, or the closest possible length, in order to minimize errors during its use in sensors, such as in an optical reflectometer. To this end, rigorous adjustments are made to the winding equipment and consistent calibration measurements are carried out in order to minimize unwanted variations in the final length of the coils.

[010] This device has high precision, with the coils created by it having an error of less than 10cm, with the smallest coil built having a length of 2km, thus having an error factor less than or equal to 0.0005%, thus enabling the use of this coil in equipment not only where high sensing precision is not only necessary, but even essential. DESCRIPTION OF THE STATE OF THE ART

[011] Some articles and patent documents described below propose methods, devices and systems for rewinding optical fibers and reels used in sensing systems.

[012] In the article “Glucose sensor with a Sagnac interference optical system”, Appl. Opt. 53, 720-726 (2014), a glucose sensor using a Sagnac interference optical system is described, where two optical fibers are used as delay lines. Petition 870240110382, dated 12 / 26 / 2024, page 9 / 57 / 11

[013] The article Fast tunable parallel optical delay line Opt. Express 8, 599-604 (2001) describes an adjustable parallel optical delay line for use in optical communication systems.

[014] In patent document US6707975B2, Fiber optic coil for a fiber optic measuring system and method for producing the same, a fiber optic coil for a fiber optic measuring device and a method for producing it are described. The object of the invention is to provide fiber optic coils for Sagnac fiber optic interferometers and a method for producing them that are distinguished by zero drift freedom within prescribed temperature limits and temperature change rates. The invention is characterized in the method for producing a fiber optic coil, in which, to reduce non-reciprocal variations in the light path in the fiber coil during its winding, the optical fiber is applied to a winding body in a quadrupole winding pattern in directly successive winding layers, so that the turns in the individual winding layers have, at irregular spacings, the greatest possible number of crossing points.

[015] In US patent document 2008 / 0063344 A1, Optical fiber coil and production method therefor, an optical fiber coil and a production method are described, which reduce the probability of optical transmission loss due to stress or temperature changes. Several layers of single optical fibers are arranged in parallel and are integrally covered with a covering portion so as to form an optical fiber tape, and the optical fiber tape is wound in a coiled state. The present invention relates to an optical fiber coil that can be used in an optical fiber gyroscope, sensor, optical amplifier, laser, dispersion compensator, nonlinear optical device, delay circuit, dummy circuit, other parts employing long optical fibers, extra-long handling tool, etc., and which can be used to save space and have low voltage.

[016] In patent document JP5933165B2, “Optical delay line and manufacturing method thereof”, an optical delay line is described and, more particularly, an optical delay line composed of a microfiber coil with a size in which Petition 870240110382, dated 12 / 26 / 2024, p. 10 / 57 / 11 a fundamental mode of an optical signal can propagate along the delay line with relatively low loss.

[017] Patent document PI 9800967-2 A2, “Dual-axis optical fiber winder with automatic winding and coiling”, describes an apparatus for winding a fiber that is being continuously supplied by a supply device for winding onto a reel, includes a collection device, adjacent to the supply device, which collects the fiber by pulling it from the supply device onto the collection device, to provide tension on the fiber between the supply device and the collection device, a positioning device that engages the fiber, between the supply device and the collection device, with a portion that allows the fiber to be continuously collected onto the collection device, and that moves from a position adjacent to the supply device and the collection device, to a position adjacent to the reel, to move the fiber to at least one winding position,and a winding device that automatically winds the fiber into at least one winding position on the reel.

[018] In document BR 11 2020 014340 5 1, “Method for producing an optical fiber tape and optical fiber tape”, a method for producing an optical fiber tape is described, said method comprising: feeding a plurality of optical fibers to provide a longitudinal optical fiber array; wherein the plurality of optical fibers are parallel and adjacent to each other; wherein each plurality of optical fibers comprises, from the center to the periphery thereof, a glass core, a glass cladding, a primary coating, a secondary coating and an outer layer formed of a first partially cured curable resin; application of a second curable resin from a dispenser to a surface of said array, wherein the second curable resin forms a plurality of successive elongated rectilinear spheres configured to form links between two adjacent optical fibers of the plurality of optical fibers;and passage of said assembly with the spheres of the second curable resin applied to it through a curing station for the curing of the second curable resin and for the completion of the curing of said first curable resin partially; Petition 870240110382, dated 12 / 26 / 2024, p. 11 / 57 / 11 cured, from the outer layer, of each optical fiber to form the connections. The invention also refers to the resulting tape.

[019] Although these documents found in the prior art describe the use of delay lines with optical fibers wound on reels and production methods, none of them describes a self-supporting compact double-coil production apparatus with physical performance characteristics superior to those described in the prior art.

[020] Therefore, it is clear that there is a need to develop solutions for the production of compact double coils capable of overcoming the limitations found in the state of the art. GENERAL DESCRIPTION OF THE INVENTION

[021] The patent application shows an apparatus used for creating self-supporting coils of double optical fibers and the method of using this apparatus, with the double fibers in the coil created by the apparatus and method having the same length with a high degree of precision, with an error rate of less than 0.0005%.

[022] The apparatus and method show the use of two optical fiber reels passing through a joiner in order to keep the fibers in parallel, a counter that detects the length of the fibers already inserted in the resulting reel, a spreader that pulls the fibers and makes it possible to fill the reel uniformly, and a reel support that contains the reel, this reel on which the reel is wound by means of a motor, this reel then removed from the reel at the end of the process. DESCRIPTION OF THE FIGURES

[023] The invention will be better understood from the detailed description and figures relating to it, of which: Figure 1: Shows a diagram of the apparatus for producing a self-supporting coil of double optical fibers, the subject of the present invention, highlighting the main components of this apparatus; Figure 2: Shows a main design concept of the coil support; Figure 3: Shows a main concept of the assembler and counter; Figure 4: Shows a main design concept of the spreader; Petition 870240110382, dated 12 / 26 / 2024, page 12 / 57 / 11 Figure 5: Shows a main design concept of the reel support; Figure 6: Shows a main design concept of the reel; Figure 7: Shows the design of the self-supporting coil of double optical fibers, an object created by the apparatus shown in the present invention. DETAILED DESCRIPTION OF THE INVENTION

[024] The APPARATUS FOR PRODUCING A SELF-SUPPORTING COIL OF DOUBLE OPTICAL FIBER, RESULTING COIL, AND METHOD OF USING THE APPARATUS describes a preferred, non-restrictive embodiment of the present invention, where the configuration and form of application may vary as appropriate for each desired implementation, without departing from the scope of the invention; describing one of the possibilities that lead to realizing the described method and the way in which it works.

[025] The apparatus for producing a self-supporting double optical fiber reel (1) is basically composed of the elements shown in Figure 1. We have initially a reel support (3) preferably made of aluminum, steel, plastic or wood, which supports two reels of optical fibers (5 and 7), said reels containing respectively lengths of wound optical fibers (9 and 11) with acrylate coating, and the fibers (9 and 11) preferably of the single-mode type, said reels (5 and 7) being arranged in said support (3) in such a way that they can rotate freely and the optical fibers (9 and 11) initially wound on the reels (5 and 7) are pulled by elements to be described later.The fibers (9 and 11) then pass through a gatherer and counter (13), the gatherer preferably made of aluminum, steel or plastic, and having a set of pulleys (13E), (13F), (13L), which keep the fibers (9 and 11) in parallel, and the counter preferably made by a magnetic, optical or mechanical turn counter sensor (13O), which sends data to a turn counter (13Q), this counter (13Q) computing the length of fiber already removed from the reels (5 and 7) in the pulling process using the data from the counter sensor (13O), this is done by a circle circumference calculation using said data from the counter sensor (13O) and the pulley diameter (13F). The pulling of the fibers (9 and 11) is performed by a fiber spreader (15) preferably made of aluminum, steel or plastic, said spreader (15). Petition 870240110382, dated 12 / 26 / 2024, page 13 / 57 / 11 having a motor (17) preferably electric that acts on this spreader (15), so as to rotate a roller with grooves (15C), this roller (15C) with a horizontal back and forth displacement mechanism and with an entry hole (15B) for the fibers (9 and 11), pulling the fibers and filling the reel (19B) contained in the reel support (19) in a uniform manner due to the back and forth movement.Regarding the reel support (19), a reel (19B) is housed within it, both components preferably constructed of plastic, aluminum, steel, or wood. With the fibers (9 and 11) now uniform and homogeneous due to the spreader, the reel (19B) also rotates under the action of a motor (21), preferably electric, of the reel support (19) in order to pull the fibers (9 and 11). At the end of the process, that is, when the desired length of parallel fibers (9 and 11) is reached and stored on the reel (19B), the motors (17 and 21) are stopped, the lengths of fibers (9 and 11) already wound on the reel (19B) are separated from the lengths of fibers (9 and 11) remaining on the spools (5 and 7), and the reel (19B) is removed from the reel support. (19) of the self-supporting double optical fiber coil production apparatus (1).The fibers (9 and 11), now wound in a double and parallel manner, after the removal of the reel support (19), will constitute the self-supporting coil of double optical fibers (23), with at least three adhesive tapes (29), preferably made of paper or plastic, with one of the surfaces covered by an adhesive substance, completely surrounding at least three parts of the inner and outer regions of the coil (23) to maintain its cohesion.

[026] Figure 2 shows a first conception of the coil support (3) which consists of a platform (3A) preferably made of steel, aluminum, plastic or wood, said platform symmetrically supporting in the horizontal direction the optical fiber coils (5 and 7) of the prior art, said coils containing respectively lengths of wound optical fibers (9 and 11), said optical fibers (9 and 11) preferably of the single-mode type, with acrylate coating, the coils (5 and 7) being arranged in said coil support (3) in such a way that they can rotate freely. To this end, said coils (5 and 7) have a cylindrical shape with central axes (5A and 7A), said axes preferably made of steel and adherent to the body of Petition 870240110382, dated 12 / 26 / 2024, p. 14 / 57 / 11 each coil, the shafts held vertically without rotational friction by bearings (3B), preferably made of steel, which are fixed to the platform (3A) by clamps (3C), preferably made of steel or aluminum.

[027] Figure 3 shows a first conception of the assembler and counter (13), preferably made of aluminum, steel or plastic, said assembler and counter (13) whose basic blocks are fixed in a support (13A) and has symmetry in relation to the input and output of optical fibers and which receives the two optical fibers (9 and 11) coming from the support (3) described in Figure 2, said fibers that enter the hole (13B) of the plate (13C) which is fixed in the support (13D) and passing through a pulley (13E). The fibers remain parallel lengthwise as they pass through the outer perimeter of the lower hemisphere of the pulley (13E) of diameter D1, which can rotate freely, the driven pulley being inserted into a shaft (13R) supported on the support (13D), with this pulley (13E) having a groove on its outer perimeter filled with material preferably of the rubber type, the fibers (9 and 11) maintaining contact with said groove for a length of at least one quarter of the outer diameter D1 of the pulley (13E).Upon exiting said pulley (13E), the fibers (9 and 11) enter the upper hemisphere and the groove of the outer perimeter of the pulley (13F), which has a total diameter D2, said diameter D2 being at least 5 times larger than D1, said groove being filled with material preferably of the rubber type and the fibers (9 and 11) maintaining contact with the groove for a length of at least one quarter of the outer diameter of D2, said pulley (13F) rotating freely through its support shaft (13G), this shaft (13G) having symmetrical bearings (13H) at its ends and which are fixed by clamps (13I) to the supports (13J) which in turn are fixed to the support (13A).After this, the pulley (13L) receives the optical fibers (9 and 11) coming from the pulley (13F) in its lower hemisphere, this pulley (13L) with an axis supported in support (13K), the pulley (13L), axis and support (13K), respectively, having identical shape, dimensions and functionalities to the assembly of pulley (13E), axis (13R) and support (13D), and the pulley (13L) being able to rotate freely, allowing the optical fibers (9 and 11) to exit parallel through the hole (13M) contained in the plate (13N), the plate (13N) fixed in the support (13K). Petition 870240110382, dated 12 / 26 / 2024, p. 15 / 57 / 11

[028] As shown in Figure 3, a revolution counter sensor (13O), preferably of the magnetic, optical or mechanical type, of the state of the art, is fixed to the support (13J) at its lower part, having access to the face of the pulley (13F) and which connects to a revolution counter (13Q), this done through an electrical cable (13P) in the case of the sensor not being mechanical. The revolution counter (13Q) obtains the value N using the data obtained from the counter sensor (13O), this value N being the number of revolutions of the pulley (13F), the length of fiber passing through the pulley (13F) being given by: π x D2 x N, π being the constant Pi, N the number of revolutions made by the pulley (13F), and D2 the diameter of the pulley (13F).

[029] Figure 4 shows a first conception of the spreader (15), preferably made of aluminum, steel or plastic, said spreader whose basic blocks are fixed in a support (15A) and which receives the two optical fibers (9 and 11) coming from the assembler and counter (13), described in Figure 3, said fibers that enter the rod with orifice (15B) of the grooved roller (15C) of the prior art for winding machine, preferably made of plastic, aluminum or steel, said grooved roller (15C) which has a shaft (15D) coupled to its center and which rotates freely supported on supports (15E), in order to move the roller (15C). The shaft (15D) has a gear (15F) fixed at one of its ends, this gear (15F) connected to another gear (17C) by a toothed belt (17D), and this second gear (17C) connected to a motor (17).This motor (17) is preferably electric, and is controlled by a control unit (17A), with the motor (17) and the control unit (17A) connected via an electric cable (17B). Thus, when the motor (17) is running, it moves the gear (17C), which moves the gear (15F) via the toothed belt (17D), and thus moves the shaft (15D) of the grooved roller (15C) for its rotation.

[030] The said grooved roller (15C) for winding machine has a horizontal reciprocating mechanism of the rod with orifice (15B), which under the action of the motor (17) allows the optical fibers (9 and 11) to uniformly fill the support reel (19B) in several layers. Petition 870240110382, dated 12 / 26 / 2024, page 16 / 57 / 11

[031] Figure 6 shows an early conception of the reel (19B), preferably made of plastic, aluminum, steel or wood and which is composed of two rims (19B3 and 19B4), which have the shafts (19B1 and 19B2) coupled to them respectively, with the shaft (19B2) having a gear (19B5) fixed at one of its ends. The reel (19B) has a cylindrical tube (19B6) preferably made of plastic, aluminum, steel or wood, the tube (19B6) having a cut (19B7) in the direction of its length which allows the internal diameter of the cylindrical tube (19B6) to be reduced under diametrical pressure, enabling the tube (19B6) to be fitted into the two edges (19B3 and 19B4) using the circular fittings (19B8) which have the same thickness as the cylindrical tube (19B6).The two edges (19B3 and 19B4) have on their respective faces a semicircular oblong hole (19B9) used so that the tips of the optical fibers (9 and 11) that enter the reel (19B) at the beginning of the winding process can be accessed externally through the passage allowed by the oblong hole (19B9). The tube (19B6) constitutes the inner part of the finished reel (23).

[032] Figure 5 shows a first conception of the reel support (19) preferably made of plastic, aluminum, steel or wood, said reel support (19) whose basic blocks are fixed in a support (19A) and which receives the two optical fibers (9 and 11) coming from the spreader (15), described in Figure 4, said fibers that enter the reel (19B) through the oblong hole (19B9), and that are fixed to one of the outer faces, or rim of the reel (19B), with the separate axes (19B1 and 19B2) of the reel (19B) coupled respectively to its rims (19B3 and 19B4), and the axes (19B1 and 19B2) supported on the two supports (19C) and rotating freely, with these two supports (19C) coupled to the support (19A). The gear (19B5) of the shaft (19B2) is coupled to another gear (21C) by a toothed belt (21D), and this second gear is connected to a motor (21).This motor (21) is preferably electric, and is controlled by a control unit (21A), with the motor (21) and the control unit (21A) connected via an electric cable (21B). Thus, when the motor (21) is running, it moves the gear (21C), which moves the gear (19B5) via the toothed belt (21D), and thus moves the shaft (19B2) of the reel (19B) for its rotation. Petition 870240110382, dated 12 / 26 / 2024, page 17 / 57 / 11

[033] In a second conception of the apparatus for producing a self-supporting coil of double optical fibers (1) the supports (3A), (13A), (15A) and (19A) can be constituted into a single support.

[034] The self-supporting double optical fiber reel (23), as shown in Figure 7, has a cylindrical shape and consists of two optical fibers (9 and 11) wound in parallel along its entire length and distributed homogeneously throughout the height (25) of said reel (23), possibly constituting one or more layers of fibers (9 and 11), the reel (23) with ends (9A and 11A) of the optical fibers (9 and 11) on the outside of the reel (23) and ends (9B and 11B) of the optical fibers (9 and 11) on the inside of the reel (23), the self-supporting double optical fiber reel (23) being removed from the reel (19B) after the rewinding process and by disassembling said reel (19B), said removal being done by diametrical pressure on the cylindrical tube (19B6) which reduces the diameter of the cylindrical tube (19B6) in the region of the cut (19B7).

[035] The coil (23) has an empty cylindrical region of diameter (27) in its interior, which allows an adhesive tape (29), preferably made of paper or plastic, with one of its surfaces covered by an adhesive substance, to completely encircle at least three parts of the inner and outer regions of the coil (23) to maintain its cohesion.

[036] Although the present invention has been described in connection with certain preferred embodiments, it should be understood that the invention is not intended to be limited to those particular embodiments. Rather, it is intended to cover all possible alternatives, modifications and equivalents within the spirit and scope of the invention.

[037] Thus, from the configuration and operating characteristics described above, it can be clearly seen that the apparatus for producing a self-supporting coil of double optical fibers and its method of use, and the coil resulting from the method of use of the apparatus, show a new and revolutionary apparatus for the state of the art, which provides the application contemplated here with the conditions of novelty, inventive activity, and unprecedented industrial application, which make it deserving of the Privilege of Invention Patent. Petition 870240110382, dated 12 / 26 / 2024, page 18 / 57

Claims

1 / 5 CLAIMS 1) SELF-SUPPORTING DOUBLE OPTICAL FIBER PRODUCTION APPARATUS, showing an apparatus (1) characterized by being constituted by: • A reel support (3) preferably made of aluminum, steel, plastic or wood, which supports two optical fiber reels (5 and 7), said reels containing respectively lengths of wound optical fibers (9 and 11) with acrylate coating, the fibers (9 and 11) preferably of the single-mode type and said reels (5 and 7) arranged in said support (3) in such a way as to rotate freely; • A gathering and counter (13), the gathering preferably made of aluminum, steel or plastic, and having a set of pulleys (13E), (13F), (13L); and the counter preferably made by magnetic, optical or mechanical revolution counter sensor (13O) and a revolution counter (13Q);• A fiber spreader (15) preferably made of aluminum, steel or plastic, with a motor (17), preferably electric, and a grooved roller (15C); the roller (15C) with a horizontal reciprocating mechanism and with an entry hole (15B) for the fibers (9 and 11); • A reel support (19), housing a reel (19B) itself, both of these components preferably constructed of plastic, aluminum, steel or wood, with the reel support (19) having a motor (21), preferably electric. 2) SELF-SUPPORTING DOUBLE OPTICAL FIBER PRODUCTION APPARATUS, according to claim 1, characterized in that the reel support (3) is constituted by a platform (3A), preferably made of steel, aluminum, plastic or wood, and said platform symmetrically supporting in the horizontal direction the optical fiber reels (5 and 7) containing respectively lengths of optical fibers (9 and 11) wound, and the reels (5 and 7) arranged in said reel support (3) in such a way that they can rotate freely; the reels (5 and 7) having a cylindrical shape with central axes (5A and 7A), said axes preferably made of steel and adherent to the body of each reel, the axes maintained vertically without rotational friction. Petition 870240110382, dated 12 / 26 / 2024, p. 19 / 57 2 / 5 by bearings (3B), preferably made of steel, and which are fixed to the platform (3A) by clamps (3C), preferably made of steel or aluminum. 3) SELF-SUPPORTING DOUBLE OPTICAL FIBER PRODUCTION APPARATUS, according to claim 1, characterized in that the assembler and counter (13) has a support (13A) and is symmetrical with respect to the entry and exit of optical fibers; with a support (13D) fixed to the support (13A) to which a plate (13C) with a hole is fixed; a pulley (13E) with a shaft (13R) supported on the support (13D) and of diameter D1 that rotates freely and on its outer perimeter, and with a groove filled with material preferably of the rubber type; a pulley (13F) that rotates freely through its shaft (13G), said shaft (13G) having symmetrical bearings (13H) at its ends and which are fixed by clamps (13I) to supports (13J) fixed to the support (13A), with the pulley (13F) having a total diameter D2, said diameter D2 being at least 5 times larger than D1, and the groove of the pulley (13F) filled with material preferably of the rubber type;and a pulley (13L) with a shaft supported on a support (13K), the pulley (13L), shaft and support (13K), respectively, having identical shape, dimensions and functionalities to the pulley (13E), shaft (13R) and support (13D) assembly, and this pulley (13F) rotating freely; a plate (13N) fixed to the support (13K) and with a hole (13M); and a revolution counter sensor (13O), preferably of the magnetic, optical or mechanical type, this fixed to the support (13J) at its lower part. 4) SELF-SUPPORTING COIL OF DOUBLE OPTICAL FIBER PRODUCTION APPARATUS, according to claim 3, characterized in that, in the case of the turn counter sensor (13O) not being mechanical, this sensor (13O) is connected to the turn counter (13Q) via an electrical cable (13P). 5) SELF-SUPPORTING COIL OF DOUBLE OPTICAL FIBER PRODUCTION APPARATUS, according to claim 1, characterized in that the spreader (15) has a support (15A); this support (15A) is coupled with supports (15E) to which are coupled a freely rotating shaft (15D), with this shaft (15D) coupled to a grooved roller (15C) for a winding machine with an orifice (15B); a gear (15F) is coupled to the shaft (15D) at one of its ends, said gear (15F) being connected to another gear (17C) by a toothed belt (17D); this gear Petition 870240110382, dated 12 / 26 / 2024, page. 20 / 57 3 / 5 (17C) connected to a motor (17), preferably electric, this controlled by a control unit (17A), and with the motor (17) and the control unit (17A) connected via an electric cable (17B); the grooved roller (15C) for winding machine has a horizontal reciprocating mechanism for the rod with hole (15B). 6) APPARATUS FOR PRODUCING A SELF-SUPPORTING COIL OF DOUBLE OPTICAL FIBER, according to claim 1, characterized in that: The reel (19B) is preferably made of plastic, aluminum, steel or wood, having two flanges (19B3 and 19B4) which have the shafts (19B1 and 19B2) coupled to them respectively; the shaft (19B2) has a gear (19B5) fixed at one of its ends; the reel (19B) has a cylindrical tube (19B6) preferably made of plastic, aluminum, steel or wood having a cut (19B7) in the direction of its length, and this tube (19B6) is fitted into the two flanges (19B3 and 19B4) using the circular fittings (19B8) which have the same thickness as the cylindrical tube (19B6); The two edges (19B3 and 19B4) have a semicircular oblong hole (19B9) on their respective faces;and the reel support (19) is preferably made of plastic, aluminum, steel or wood and has a support (19A), with two other supports (19C) coupled to this support (19A); with the reel shafts (19B1 and 19B2) housed in the supports (19C) and coupled respectively to their edges (19B3 and 19B4), and with the shafts (19B1 and 19B2) rotating freely; at the end of the shaft (19B2) a gear (19B5) is coupled, this gear (19B5) being coupled to another gear (21C) by a toothed belt (21D); The gear (21C) is coupled to a motor (21), preferably electric, which is controlled by a control unit (21A), and the motor (21) and the control unit (21A) are connected via an electric cable (21B). 7) METHOD OF USING THE SELF-SUPPORTING DOUBLE OPTICAL FIBER PRODUCTION APPARATUS, using the apparatus of claim 1, characterized by inserting two optical fiber reels (5 and 7) with acrylate coating into the reel support (3); the fibers of the reels (5 and 7) are pulled by motors (17 and 21); the fibers then pass through a set of pulleys (13E), Petition 870240110382, dated 12 / 26 / 2024, p. 21 / 57 4 / 5 (13F), (13L) of the assembler and counter (13), keeping the fibers (9 and 11) in parallel, and also passing through the turn counter sensor (13O) which sends its obtained data to a turn counter (13Q), which calculates the amount of fiber (9 and 11) already removed from the reels (5 and 7) by calculating the circumference of the circle using the data from the counter sensor (13O) and pulley diameter (13F);the fibers (9 and 11) passing through fiber spreader (15), entering orifice (15B) of a roller with grooves (15C), this roller (15C) rotating by the action of the motor (17) of the spreader (15) and then pulling the fibers (9 and 11), with the horizontal back and forth displacement mechanism of the roller (15C) performing uniform filling of the reel (19B) contained in the reel support (19); and then the fibers arrive at a reel (19B) housed in a reel holder (19) in a uniform manner, the reel (19B) rotating under the action of the motor (21) of the reel holder (19), and when the desired length of parallel fibers (9 and 11) is reached and already stored on the reel (19B), the motors (17 and 21) are stopped, the lengths of fibers (9 and 11) already wound on the reel (19B) are separated from the lengths of fibers (9 and 11) remaining on the reels (5 and 7) and the reel (19B) is removed from the reel holder (19);the coiled fibers (9 and 11), after removal of the reel support (19) constituting the self-supporting coil of double optical fibers (23), and then at least three adhesive tapes (29), preferably of paper or plastic, with one of the surfaces covered by an adhesive substance, completely encircle at least three parts of the inner and outer regions of the coil (23).; 8) COIL RESULTING FROM THE METHOD OF USING THE SELF-SUPPORTING COIL OF DOUBLE OPTICAL FIBER PRODUCTION APPARATUS, obtained from the method of claim 7, characterized in that the self-supporting coil of double optical fibers (23) has a cylindrical shape and is constituted of two optical fibers (9 and 11) wound in parallel along its entire length and distributed homogeneously throughout the height (25) of said coil (23), constituting one or more layers of fibers (9 and 11); the coil (23) has ends (9A and 11A) of the optical fibers on the outside of the coil (23), and ends (9B and 11B) of the optical fibers on the inside of the coil (23); the coil (23) has an empty cylindrical region of diameter (27) inside; and with adhesive tape (29), preferably paper or plastic, Petition 870240110382, of 12 / 26 / 2024, page 22 / 57 5 / 5 completely encircling at least three parts of the inner and outer regions of the coil (23). Petition 870240110382, of 12 / 26 / 2024, page23 / 57.

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