Classifications

• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
  • G02B6/24—Coupling light guides
  • G02B6/255—Splicing of light guides, e.g. by fusion or bonding
• • G—PHYSICS
  • G02—OPTICS
  • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
  • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
  • G02B6/24—Coupling light guides
  • G02B6/36—Mechanical coupling means
  • G02B6/38—Mechanical coupling means having fibre to fibre mating means

Definitions

• the object of the present invention is to present an optical device for the external field mounting connection to an optical outdoor connection cable used in a fiber optic access network.
• a fiber optic connector is available for connection between optical cables, between an optical cable and an optical to electrical component and between optical to electrical components.
• the connecting device interconnects the ends of two optical fibers, so that the optical energy output by a transmission optical fiber can be optimally coupled to a receiving optical fiber.
• optical connectors there are several types of optical connectors and among them:
• the Subscriber Connector or SC Connector (“Subscriber Connector” or “Square Connector” in English) is a snap connector, with a splint ("splint”, in English) of 2.5 mm., Standardized in TIA-568-A and Widely used for its excellent performance. It connects with a simple insertion movement that binds the connector. And it also exists with a duplex configuration. It is widely used in SM installations and Network and CATV applications.
• the LC connector is a small form factor connector that uses a 1.25 mm splint, half the size of the SC. It is a connector that uses a ceramic splint as standard, easily terminated with any adhesive. Good performance, highly favored for use single mode Especially used in transceivers and high data density communication equipment.
• PC Physical Contact
• APC Angle Physical Contact
• UPC Ultra Physical Contact
• the objective technical problem that arises is to eliminate the need to have different lengths of preconnected outdoor optical connection, facilitating the logistics and the work of the installer, while ensuring a quick, simple and reliable connector mounting method.
• the present invention serves to solve the problem mentioned above, solving the problems presented by the solutions mentioned in the state of the art, by means of an SC connector for an outdoor field assembly that allows for easy and rapid connectorization, at the time of installation , of the optical cable of external connection (until of 5 mm of diameter), so that it is only necessary to have a coil of cable of external connection and the elements that constitute the connector, together with the necessary tools for its assembly.
• the present invention relates to an outdoor field mounting connector, which can be of the bayonet type or of other types, such as threaded, being in any case the solution proposed here agnostic with respect to the type of anchoring of the connector.
• the proposed external field mounting connector (for example, in a possible embodiment, of the bayonet type) is composed of several elements which, together with the external supply cable, are properly assembled.
• One aspect of the invention relates to a device for optical connection comprising the following components:
• a splint-fiber assembly comprising:
• a splint that constitutes an inner body of connector SC or and a fiber segment to be fused with an outer fiber optic cable having a cover of a given diameter, a support located at the back of the optical connector that has a slot to anchor the splint-fiber assembly with the other components of the optical connector and which are the following:
• a reinforced connector assembly that constitutes an outer connector body to be mounted on the splint-fiber assembly and provide environmental protection to the splint-fiber assembly
• a crimping ring for engaging at one end to the connector assembly and sealing the reinforced connector assembly by crimping on the fiber optic cable cover introduced by said end
• the components reinforced connector set, crimp ring and boot of the proposed optical connector have an inner diameter greater than the given diameter of the fiber optic cable cover, whereby said components can be traversed by the fiber optic cable without tearing the cover .
• US7377699 where the concept of field mounting proposed in this invention is not shown, the main difference is that the present invention is about an SC connector, while US7377699 refers to an LC connector.
• US7377699 is related to a part of the splint and how to terminate the fiber inside, requiring a short fiber.
• the present invention does not need the fiber for connectorization to be so short.
• the present invention allows the standard main part of an SC connector to be fixed to a housing that will provide reinforcement and protection against outdoor environmental conditions. More specifically, in the proposed connector only the internal component that allows the SC / APC type connectorization with a piece of fiber is specified, but the internal shape of the splint support itself or the method of fixing it, is somewhat open to different configurations, leaving the manufacturer free for a design suited to his particular purposes.
• the present invention solves the easy field mounting of a reinforced outdoor connector by allowing a standard SC / APC connector to be partially mounted on a 900 ⁇ bracket, which instead of being prepared to crimp the cable, is adapted to be anchored to the connector reinforcement housing.
• FIGURE 1. Shows a side view of the reinforced field-mount optical connector, with all its components mounted, according to a preferred embodiment of the invention.
• FIGURE 2. Shows an exploded view of the reinforced optical connector with the separate components, according to a preferred embodiment of the invention.
• FIGURE 3.- Shows an inside view of the outer body of the reinforced optical connector, according to a preferred embodiment of the invention.
• FIGURE 4. Shows an exterior view of the outer body of the optical connector reinforced with a plug, according to a preferred embodiment of the invention.
• FIGURE 5. Shows a sectioned inside view of the outer body of the reinforced optical connector pierced by the rush fiber, according to a preferred embodiment of the invention.
• An embodiment of an optical connection device (10), as shown in Figure 1, is then proposed for outdoor field mounting.
• the external field mount connector is based on fusion technology, in which the optical continuity of the connector is achieved by the fusion of the optical fiber of the outdoor supply cable with the optical fiber previously cut and terminated at the factory in the other end in a polished ceramic splint with APC finish.
• a fiber optic fuser must be used with the appropriate removable skates, depending on the type and type of fuser.
• This connector is compatible with a wide variety of existing fusers in the fiber optic plant of a telecommunications operator. Additionally, tools are used for the preparation of the connection, stripping and cutting of optical fiber, as well as crimping the connector with the reinforcement elements of the supply cable.
• FIG. 1 shows the components of the optical connector (10), illustrated separately, which are the following: (1): Splint-Fiber set.
• Crimp metal insert for example, aramid.
• a connector plug (7) can be added to the reinforced connector assembly (3), as shown in Figure 4, providing the following elements for coupling:
• O-ring seal for example, 15mm
• the Splint-Fiber Assembly (1) comprises a splint, preferably ceramic and angularly polished at the factory, with APC finish, which guarantees a Return Loss PR ⁇ 60 dB.
• the splint of the outer field mounting connector basically constitutes the inner body of the SC connector. This splint is housed inside a plastic body, defined in the SC standard. This plastic body incorporates an internal spring that facilitates the contact and alignment of the splint surface of a first field-mount connector during a connection with the splint of a second connector.
• a small length of fiber is defined in 900 ⁇ and bare fiber, cut perpendicularly and that it is a segment of fiber (12) that allows directly, by means of skates compatible with the existing fusers in the plant, its fusion with the optical fiber (1 1) of the connection.
• a plastic part is incorporated that allows the splint to be compatible with the rest of the components of the connector (10). All these parts are factory assembled in order to simplify the assembly process of the connector.
• the splice guard (2) is long enough to protect the length of the exposed melt between 900 ⁇ of the splint and 900 ⁇ of the fiber cable (11) of the external connection.
• a suitable length is 25 mm and having an outside diameter of 2.4 mm.
• This element consists of the central body of the connector (10), preferably of the bayonet type, although it can be threaded or of another type, making its connection compatible with the existing bayonet type adapters and allowing the adequate crimp of the cable reinforcement elements and connector seal. All these parts are factory assembled in a single element in order to simplify the assembly process of the connector.
• the inner diameter of the reinforced connector assembly (3) allows it to be completely traversed with the external fiber optic cable (11), with a diameter of up to 5.0 mm. Since it is not necessary to tear the cable cover, it is easy to assemble and seal the connector.
• the Crimp Ring (4) is a metallic element that allows the crimping of the reinforcement elements of the cable on the body of the reinforced connector (3), of the bayonet type or another. On the other hand it allows the sealing of the reinforced connector (3), by means of the crimp on the cover of the fiber optic cable (11) of external connection of up to 5.0 mm. Additionally, it allows the connector boot to be fixed
• Connector boot (5) This element, fixed on the Crimp Ring (4) facilitates the sealing of the outdoor field mounting connector (10) on the body thereof. Additionally, the boot of the connector (5) protects against lateral loads, giving mechanical consistency to the connector.
• the three pieces have a sufficient internal diameter so that the external connection cable of up to 5 mm can be inserted through them without the need to tear the cover.
• the roof must be stripped at a certain distance (for example, about 75 mm) from the end of the fiber optic (1 1).
• the reinforcing elements are cut at a certain distance (for example, the aramid splint is cut about 30 mm) from the cable cover (1 1).
• the splice protector (2) is inserted through 900 ⁇ and fixed on a skid compatible with the fiber optic fuser:
• the fiber optic (1 1) of the connection is cut.
• the optical fiber (1 1) is fused with the fiber segment (12) already prepared from the splint.
• Connector body The body of the reinforced connector assembly (3) is mounted on the splint of the Splint-Fiber assembly (1), the connector body being fixed internally by means of a clip system. 2 or. Crimp Ring (4)
• Connector boot (5) Finally the connector boot (5) is mounted on the crimp ring (4), achieving the sealing of the reinforced connector (3) on the body of the connector.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Optics & Photonics (AREA)
• Engineering & Computer Science (AREA)
• Plasma & Fusion (AREA)
• Mechanical Coupling Of Light Guides (AREA)

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Applications Claiming Priority (2)

Publications (1)

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Citations (3)

• 2015
  • 2015-02-17 ES ES201530189U patent/ES1137083Y/es active Active
• 2016
  • 2016-02-17 BR BR112017017230-5A patent/BR112017017230B1/pt active IP Right Grant
  • 2016-02-17 WO PCT/ES2016/070097 patent/WO2016132008A1/es active Application Filing
  • 2016-02-17 AR ARP160100417A patent/AR103717A1/es active IP Right Grant

Patent Citations (3)

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