Abstract: A communication cable can comprise optical fibers protected by an armor, such as a corrugated metallic tube. An outer jacket can cover the armor to provide environmental protection. A tape located between the outer jacket and the armor can comprise holes, with the outer jacket extending into the holes, towards the armor. The tape can be wrapped around the armor to form a tube, for example. The holes can control coupling between the outer jacket and the armor, for example providing a desired level of friction, bonding, adhesion, adherence, fusion, and/or contact between the outer jacket and the armor.

Abstract: An armored fiber optic cable includes fiber optic assembly, including at least one optical fiber, and dielectric armor in the form of an extruded polymeric tube surrounding the fiber optic assembly. The dielectric armor has at least one layer formed from a rigid material having a Shore D hardness of about 65 or greater. Further, the dielectric armor has an armor profile such that the dielectric armor has an undulating surface along its length.

Abstract: A method and apparatus for preventing erosion of a cable for use in a wellbore is described herein. The cable has one or more optical fibers adapted to monitor and/or control a condition in the wellbore. The cable includes a layer of elastomeric material at least partially located on an outer surface of the cable. The elastomeric material is adapted to absorb energy due to the impact of particles in production fluid or wellbore fluid against the cable.

Abstract: Armored fiber optic assemblies and methods are disclosed that include a dielectric armor and at least one bend-resistant multimode optical fiber. The dielectric armor has an armor profile, thereby resembling conventional metal armored cable to the craft. The dielectric armor provides additional crush and impact resistance and the like for the optical fibers and/or fiber optic assembly therein. The dielectric armor is advantageous to the craft since it provides the desired mechanical performance without requiring the time and expense of grounding like conventional metal armored cables. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space. The use of at least one bend-resistant multimode optical fiber allows for improved bend performance for the armored fiber optic assemblies, allowing for tighter cable routing as compared to armored fiber optic assemblies having conventional multimode optical fiber.

Abstract: Cables have dielectric armor with an armor profile that resembles conventional metal armored cable. The dielectric armor provides additional crush and impact resistance for the optical fibers and/or fiber optic assembly therein. The armored cables recover substantially from deformation caused by crush loads. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space.

Abstract: Armor, configured for use with a fiber optic assembly, includes a dielectric tube having an armor profile and a length, where the dielectric tube has at least one layer formed from a rigid material. The armor profile is undulating along the length, and the armor profile has a band thickness and a web thickness. The band thickness is between about 0.5 millimeters and about five millimeters. The web thickness is less than the band thickness, and the web thickness is greater than or equal to 0.1 times the band thickness.

Abstract: A multi-fiber cable assembly includes a plurality of optical fibers and at least two fiber grouping members disposed in a reverse double helical configuration about the plurality of optical fibers. An outer jacket surrounds the fiber grouping members and the plurality of optical fibers.

Abstract: An optical fiber cable includes an elongated optical element portion having an optical fiber, a pair of tensile strength members and an outer jacket. The optical fiber is composed of one or more plastic coated optical fibers, tight-buffered optical fibers or optical ribbon fibers. The pair of tensile strength members is arranged in parallel at both sides of the optical fiber in a width direction of the optical fiber. The outer jacket covers outer circumferences of the optical fiber and the pair of tensile strength members. A frictional coefficient of the outer jacket is equal to or less than 0.20. Shore D hardness of the outer jacket is equal to or more than 60.

Abstract: It is an object of the present invention to provide an optical fiber cable which can reliably prevent increased transmission loss due to damage of the optical fiber as a result of the egg-laying behavior of cicadas. The cable includes at least an optical fiber 1, tension members 6 and a sheath 3. The sheath 3 has a shore D hardness of 55 or more and a minimum distance L from a surface of the optical fiber 1 to an outer surface of the sheath 3 of greater than 0.3 mm. Further, in the cable, the surface of sheath 3 has a coefficient of friction of 0.45 or less and the sheath 3 has a shore D hardness of 57 or more. In addition, the cable is made by using a specific flame retardant composition (P) as the sheath material.

Abstract: An optical fiber cable includes an unbuffered optical fiber, a tensile reinforcement member surrounding the unbuffered optical fiber, and a jacket surrounding the tensile reinforcement member. The jacket is suitable for outside plant environment. A water blocking material is placed between the unbuffered fiber and the jacket. The unbuffered optical fiber comprises an ultra bend-insensitive fiber that meets the requirements of ITU-T G.657.B3 and exhibits an additional loss of less than approximately 0.2 dB/turn when the fiber is wrapped around a 5 mm bend radius mandrel. The optical fiber cable also exhibits an additional loss of less than approximately 0.4 dB/km at 1550 nm when the cable is subjected to ?20° C. outside plant environment.

Abstract: A low cost, high performance, low profile flexible reinforcement member that can be used for both optical and copper communications cable. The reinforcement members made according to the preferred process are more rigid than known reinforcement members, but are less rigid than glass pultruded rods. Communications cables utilizing these members are lightweight and exhibit an improved combination of strength and flexibility compared to traditional communications cables. Further, these communication cables may then be installed into underground ducts using more economical and faster installation techniques.

Abstract: A fiber optic cable assembly includes a connector and a fiber optic cable. The connector includes a housing having a first axial end and an oppositely disposed second axial end. A ferrule is disposed in the housing. A plurality of optical fibers is mounted in the ferrule. The fiber optic cable includes an outer jacket defining a fiber passage that extends longitudinally through the outer jacket and a window that extends through the outer jacket and the fiber passage. First and second strength members are oppositely disposed about the fiber passage in the outer jacket. A plurality of optical fibers is disposed in the fiber passage. The optical fibers are joined at splices to the optical fibers of the connector. A splice sleeve is disposed over the splices. The splice sleeve is disposed in the window of the outer jacket.

Abstract: A rack cabling system including a rack having mounted thereon a first hardware component and a patch panel housing mounted on the rack adjacent the first hardware component. The patch panel housing populates no more than a three rack unit (RU space), the patch panel housing including a front end having cable pathway openings and a rear end having connector coupler plates mounted therein. The patch panel may have a first cable pathway opening located adjacent the first side of the housing and defining a primary position and a first connector coupler plate mounted on the rear adjacent on the first side and the first connector plate having a first position corresponding to the primary position of the first cable pathway opening. Cable harnesses are routed with less than three bends of the cables between the first hardware component and the patch panel housing, so that the first cable harness is terminated at the first coupler plate in the first position.

Abstract: A bend-insensitive optical cable for transmitting optical signals includes an optical cable having a length, extending from an input end adapted to receive the optical signals, to an output end and including at least one single-mode optical fiber having a cable cut-off wavelength, of 1290 nm to 1650 nm. The at least one optical fiber is helically twisted around a longitudinal axis with a twisting pitch, for a twisted length, extending along at least a portion of the length, of the optical cable, wherein the twisted length and the twisting pitch are selected such that the optical cable exhibits a measured cut-off wavelength equal to or lower than 1260 nm. Preferably, the at least one fiber has a mode-field diameter of 8.6 ?m to 9.5 ?m. According to a preferred embodiment, the optical cable includes two optical fibers twisted together along the longitudinal axis, each of the two optical fibers having a cable cut-off wavelength of 1290 nm to 1650 nm.

Abstract: Downhole cables are described that are configured to protect internal structures that may be detrimentally impacted by exposure to the downhole environment, by protecting such structures by at least two protective layers. In some examples, the structures to be protected may be housed in a protective tube housed within the protective outer sheath. The described configuration enables the use of structures such as polymer fibers in the cables for strength and load-bearing capability by protecting the fibers, by multiple protective layers, from exposure to gases or fluids within a wellbore.

Abstract: A fiber optic cable assembly includes an outer jacket defining a first passage and a second passage disposed adjacent to the first passage. The outer jacket includes a wall disposed between an outer surface of the outer jacket and the first passage. A plurality of optical fibers is disposed in the first passage. A reinforcing member is disposed in the second passage. An access member is disposed in the wall of the outer jacket.

Abstract: Described is an optical fiber cable designed for drop cable applications that has a compact profile, and is suitable for both the indoor and outdoor portions of the installation. The new design has three functional units, an optical fiber subunit, and two strength members arranged side-by side on either side of the optical fiber. The overall cable cross section round. In a preferred embodiment, the optical fiber module of the cable has a coupled fiber design.

Abstract: Armored fiber optic assemblies and methods are disclosed that include a dielectric armor and at least one bend-resistant multimode optical fiber. The dielectric armor has an armor profile, thereby resembling conventional metal armored cable to the craft. The dielectric armor provides additional crush and impact resistance and the like for the optical fibers and/or fiber optic assembly therein. The dielectric armor is advantageous to the craft since it provides the desired mechanical performance without requiring the time and expense of grounding like conventional metal armored cables. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space. The use of at least one bend-resistant multimode optical fiber allows for improved bend performance for the armored fiber optic assemblies, allowing for tighter cable routing as compared to armored fiber optic assemblies having conventional multimode optical fiber.

Abstract: An example fiber optic cable includes an outer jacket having an elongated transverse cross-sectional profile defining a major axis and a minor axis. The transverse cross-sectional profile has a maximum width that extends along the major axis and a maximum thickness that extends along the minor axis. The maximum width of the transverse cross-sectional profile is longer than the maximum thickness of the transverse cross-sectional profile. The outer jacket also defines first and second separate passages that extend through the outer jacket along a lengthwise axis of the outer jacket. The second passage has a transverse cross-sectional profile that is elongated in an orientation extending along the major axis of the outer jacket. The fiber optic cable also includes a plurality of optical fibers positioned within the first passage a tensile strength member positioned within the second passage.

Abstract: The multicore fiber comprises 7 or more cores, wherein diameters of the adjacent cores differ from one another, wherein each of the cores performs single-mode propagation, wherein a relative refractive index difference of each of the cores is less than 1.4%, wherein a distance between the adjacent cores is less than 50 ?m, wherein, in a case where a transmission wavelength of each of the cores is ?, the distance between the adjacent cores is , a mode field diameter of each of the cores is MFD, and a theoretical cutoff wavelength of each of the cores is ?c, (/MFD)·(2?c/(?c+?))?3.95 is satisfied, and wherein a distance between the outer circumference of the coreand an outer circumference of the clad is 2.5 or higher times as long as the mode field diameter of each of the cores.

Abstract: Armor, configured for use with a fiber optic assembly, includes a dielectric tube having an armor profile and a length, where the dielectric tube has at least one layer formed from a rigid material. The armor profile is undulating along the length, and the armor profile has a band thickness and a web thickness. The band thickness is between about 0.5 millimeters and about five millimetres. The web thickness is less than the band thickness, and the web thickness is greater than or equal to 0.1 times the band thickness.

Abstract: An example fiber optic cable includes an outer jacket having an elongated transverse cross-sectional profile defining a bowtie shape. The outer jacket defines at least first and second separate passages that extend through the outer jacket along a lengthwise axis of the outer jacket. The fiber optic cable includes a plurality of optical fibers positioned within the first passage and a tensile strength member positioned within the second passage. The tensile strength member has a highly flexible construction and a transverse cross-sectional profile that is elongated in the orientation extending along the major axis.

Abstract: A fiber optic cable includes an inner jacket and an outer jacket. The inner jacket surrounds an optical fiber and a strength layer positioned between the optical fiber and the inner jacket. The inner jacket includes a liquid crystal polymer within a base polymeric material. The outer jacket defines an elongate transverse cross-sectional profile. A strength member is positioned outside the inner jacket. The outer jacket is removable from the inner jacket such that the fiber optic cable forms a first cable portion that extends from a first end of the fiber optic cable to an intermediate location of the fiber optic cable and a second cable portion that extends from the intermediate location to a second end of the fiber optic cable. The first cable portion is more rugged than the second cable portion.

Abstract: Armored fiber optic assemblies are disclosed that include a dielectric armor along with methods for manufacturing the same. The dielectric armor has an armor profile, thereby resembling conventional metal armored cable to the craft. The dielectric armor provides additional crush and impact resistance and the like for the optical fibers and/or fiber optic assembly therein. The dielectric armor is advantageous to the craft since it provides the desired mechanical performance without requiring the time and expense of grounding like conventional metal armored cables. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space.

Abstract: There is provided an optical fiber cable having a plurality of optical fiber members. Each optical fiber member includes an optical fiber and a protective coating surrounding the optical fiber. A polymer coating surrounds the plurality of optical fiber members and a portion of the polymer coating is located between at least some of the optical fiber members. The optical fiber members and the polymer coating form an optical fiber unit. A tight buffer surrounds the optical fiber unit.

Abstract: The present disclosure relates to a fiber optic cable including an outer jacket having an elongated transverse cross-sectional profile defining a major axis and a minor axis. The transverse cross-sectional profile has a maximum width that extends along the major axis and a maximum thickness that extends along the minor axis. The maximum width of the transverse cross-sectional profile is longer than the maximum thickness of the transverse cross-sectional profile. The outer jacket also defines first, second and third separate passages that extend through the outer jacket along a lengthwise axis of the outer jacket. The third passage has a transverse cross-sectional profile that is elongated in an orientation extending along the major axis of the outer jacket. The first, second and third passages are generally aligned along the major axis with the third passage being positioned between the first and second passages.

Abstract: Disclosed is a cable for use in a concentrating photovoltaic module. The cable includes at least one strand wrapped with an optically pervious or reflective sheath. The pervious sheath is made of a material that exhibits a penetration rate of 90% and survives a temperature of at least 140 degrees Celsius. The reflective sheath is made of a material that exhibits a reflection rate of 95% and survives a temperature of at least 140 degrees Celsius. The cable is used to connect an anode of the concentrating photovoltaic module to a cathode of the same. The material of the reflective sheath may be isolating.

Abstract: A low cost, high performance, low profile flexible reinforcement member that can be used for both optical and copper communications cable. The reinforcement members made according to the preferred process are more rigid than known reinforcement members, but are less rigid than glass pultruded rods. Communications cables utilizing these members are lightweight and exhibit an improved combination of strength and flexibility compared to traditional communications cables. Further, these communication cables may then be installed into underground ducts using more economical and faster installation techniques.

Abstract: A fiber optic cable assembly includes an optical fiber, a strength layer surrounding the optical fiber and an outer jacket surrounding the strength layer. The outer jacket includes a base material having a Shore D Hardness of at least 85 and liquid crystal polymer embedded in the base material. The liquid crystal polymer constitutes less than 2% of the outer jacket by weight.

Abstract: When transmitting in higher-order modes (HOMs), the chances of dielectric breakdown in the bulk glass can be reduced by judicious selection of the mode of transmission. Since energy distributions in the HOM profile change with the mode order, one can calculate the peak intensity for any given HOM. Correspondingly, one can calculate whether any portion of the transmitted pulse will exceed the breakdown threshold for the optical fiber through which the HOM signal is being transmitted. Should the calculated energy exceed the dielectric breakdown threshold, another HOM with a lower peak intensity can be selected for signal transmission. Disclosed are systems and methods for selecting an appropriate HOM to reduce the likelihood of dielectric breakdown.

Abstract: A fiber optic cable is provided having a at least one fiber element, a layer of aramid strength members, and a jacket disposed over said layer of aramid strength members. The layer of aramid strength members is wound at a lay length that is equal to or lesser than a predetermined bend radius.

Abstract: The bond between an armor and a cable covering jacket is controlled by introducing intervening material at the interface of the layers along selected bond regions. The intervening material can comprise particulate matter or a strip of material introduced at selected locations of the armor perimeter to allow ease of access at the selected regions.

Abstract: The bond between abutting layers is controlled by introducing particulate matter at the interface of the layers.

Abstract: A leak detection apparatus comprising an optical fiber sensor (2) arranged to detect leakage of fluid through a hose carcass (6, 8), wherein the sensor is arranged to detect the location of the leak along a section (4) of the hose.

Abstract: According to some embodiments, the optical fiber comprises: (i) a core having a first index of refraction n1; (ii) a cladding surrounding the core and having a second index of refraction n2, such that n1>n2, wherein cladding has at two sets of stress rods extending longitudinally through the length of the optical fiber, wherein the two sets of stress rods have CTE coefficients and/or softening points different from one another and different from that of cladding.

Abstract: Cables have dielectric armors with armor profiles that provide additional crush and impact resistance for the optical fibers and/or fiber optic assembly therein, while retaining flexibility to aid during installation. The armored cables recover substantially from deformation caused by crush loads.

Abstract: The present disclosure relates to a fiber optic cable including an outer jacket having an elongated transverse cross-sectional profile defining a major axis and a minor axis. The transverse cross-sectional profile has a maximum width that extends along the major axis and a maximum thickness that extends along the minor axis. The maximum width of the transverse cross-sectional profile is longer than the maximum thickness of the transverse cross-sectional profile. The outer jacket also defines first and second separate passages that extend through the outer jacket along a lengthwise axis of the outer jacket. The second passage has a transverse cross-sectional profile that is elongated in an orientation extending along the major axis of the outer jacket. The fiber optic cable also includes a plurality of optical fibers positioned within the first passage a tensile strength member positioned within the second passage.

Abstract: In order to improve a cable, comprising an inner cable body, in which at least one conductor strand of an optical and/or electrical conductor runs in the longitudinal direction of the cable, an outer cable sheath, enclosing the inner cable body and lying between an outer sheath surface of the cable and the inner cable body, and at least one information carrier unit, disposed within the outer sheath surface of the cable such that the cable also comprises a shielding, the invention proposes that the information carrier unit having an antenna unit lying in an antenna surface running approximately parallel to the longitudinal direction of the cable, by the antenna surface running at a distance from an electrical shielding of the cable and by providing, between the antenna surface and the shielding, a spacing layer, in which the electromagnetic field that couples to the antenna unit and passes through the antenna surface can extend between the antenna unit and the shielding.

Abstract: Generic tow lead-in for streamers providing communication between the seismic systems and the streamers, consisting of at least four wire power quad, at least four multimode optical fibers and at least one signal pair, where the at least one signal line do not utilize a screen.

Abstract: An armored optical fiber cable may include a core cable portion and an armored cable portion surrounding the core cable portion. The core cable portion may include, among other layers, a steel tape layer wrapped around an insulation layer surrounding a conductive sheath. The steel tape layer improves armored resistance to dragging and abrasion caused by fishing gear by protecting the insulation layer surrounding the sheath.

Abstract: A fiber optic cable comprises a cable core comprising at least one optical fiber and one of at least one electrical conductor and at least one strength member disposed adjacent the at least one optical fiber, at least one polymeric inner layer enclosing the cable core, and at least one polymeric outer layer enclosing the cable core and the inner layer to form the fiber optic cable, the outer layer operable to maintain integrity of the cable within a predetermined temperature range.

Abstract: A method for forming an armored cable assembly includes: forming an armor sheath using an armor sheath forming apparatus, the armor sheath defining a sheath passage; forcibly feeding a transmission cable into the sheath passage upstream of an exit capstan to provide an excess length of the transmission cable in the armor sheath upstream of the exit capstan; and drawing the armor sheath downstream of the armor sheath forming apparatus using the exit capstan.

Abstract: A fiber optic cable includes at least one optical fiber, at least one strength member, armor components, and a cable jacket. The cable jacket has a cavity with a generally rectangular cross-section with the armor components disposed on opposite sides of the cavity.

Abstract: Cables have dielectric armor with an armor profile that resembles conventional metal armored cable. The armor can be formed as a single layer, without requiring an outer jacket layer. The dielectric armor provides additional crush and impact resistance for the optical fibers and/or fiber optic assembly therein. The armored cables recover substantially from deformation caused by crush loads. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space. The assemblies can additionally be lightweight and relatively inexpensive to manufacture.

Abstract: Cables have dielectric armor with an armor profile that resembles conventional metal armored cable. The dielectric armor provides additional crush and impact resistance for the optical fibers and/or fiber optic assembly therein. The armored cables recover substantially from deformation caused by crush loads. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space.

Abstract: The invention consists of a secure data transmission cable for electronically transmitting secure data between remote locations in an exposed condition. The data transmission cable comprises a tubular outer protective layer, an inner core disposed within the outer protective layer, a data transmission line carried within the inner core for transmitting secure data between the remote locations, and a fiber optic sensor line included in the outer protective layer for detecting unauthorized activity relative to the transmission line. The fiber optic data transmission line comprises a plurality of optical fibers for transmitting data between remote locations and for detecting unauthorized activity relative to the transmission line. A protective casing surrounds the data transmission line for protecting the fiber optic data transmission line from contacting the outer protective layer. An outer protective casing braided around the core in which the sensor line is enclosed provides strength to the cable.

Abstract: Armored fiber optic assemblies are disclosed that include a dielectric armor along with methods for manufacturing the same. The dielectric armor has an armor profile, thereby resembling conventional metal armored cable to the craft. The dielectric armor provides additional crush and impact resistance and the like for the optical fibers and/or fiber optic assembly therein. The dielectric armor is advantageous to the craft since it provides the desired mechanical performance without requiring the time and expense of grounding like conventional metal armored cables. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space.

Abstract: A telecommunication fiber optic cable for gas pipeline application has a built-in leakage detecting device. The cable has an optical core including a number of telecommunication optical fibers, an outer jacket covering the optical core, and one or more gas leakage detector optical fibers. One or more gas leakage detector optical fibers are enclosed within the outer jacket. Preferably, the cable has a linearly extending rod reinforcing system having strength rods that force the cable to bend in a preferential bending place. Preferably, the leakage detector optical fibers are located at, or close to, a plane that is substantially orthogonal to the preferential bending plane and passing through the cable neutral axis.

Abstract: Armored fiber optic assemblies are disclosed that include a dielectric armor along with methods for manufacturing the same. The dielectric armor has an armor profile, thereby resembling conventional metal armored cable to the craft. The dielectric armor provides additional crush and impact resistance and the like for the optical fibers and/or fiber optic assembly therein. The dielectric armor is advantageous to the craft since it provides the desired mechanical performance without requiring the time and expense of grounding like conventional metal armored cables. Additionally, the armored fiber optic assemblies can have any suitable flame and/or smoke rating for meeting the requirements of the intended space.

Abstract: A cable component is provided that includes at least one optical fiber; and a plurality of shaped profiles having inner and outer surfaces such that the inner surfaces combine to from an enclosure for the at least one optical fiber.