Abstract: Compositions and methods for reducing or eliminating biofilm formation are disclosed. The compositions include an O-glycan substituted silk fibroin with a predetermined degree and distribution of O-glycan substitution. The O-glycan substituted silk fibroin is not cytotoxic to the population of biofilm-forming microbes, but it reduces or prevents biofilm formation, nonetheless.

Abstract: Saccharide-substituted silk fibroin compositions as well as methods for making and using the same are provided. The compositions can include at least one saccharide coupled to silk fibroin. The coupling can be via various residues on the silk fibroin.

Abstract: Methods, spray devices, and kits for the in situ formation of silk fibroin fibers and/or aerosols are disclosed. Rapidly mixing a silk fibroin solution and a beta sheet initiation solution forms a mixed solution, which is rapidly expanded to form the silk fibroin fibers and/or aerosols. The beta sheet initiation solution includes a hygroscopic polymer having a molecular weight of between 7.5 kDa and 15.0 kDa. The rapid mixing and rapid expanding occur within one second of one another. Silk fibroin aerosols are formed when a molecular weight distribution of fragments in the silk fibroin solution is below an aerosol-fiber threshold. Silk fibroin fibers are formed when the molecular weight distribution is below the aerosol-fiber threshold.

Abstract: The present disclosure provides an optical fibre cable. The optical fibre cable includes a plurality of buffer tubes and a plurality of interstitial fillers in spaces between the plurality of buffer tubes. The plurality of interstitial fillers is arranged in spaces between the plurality of buffer tubes. The optical fibre cable may include a plurality of water swellable yarns. There is an optical fibre ribbon stack including a plurality of optical fibre ribbons. The plurality of optical fibre ribbons are stacked to form the optical fibre ribbon stack. The present disclosure provides a fire retardant optical fibre cable includes the plurality of buffer tubes and one or more numbers of interstitial fillers and includes at least one of a thermal resistant water blocking tape, a fire resistant water blocking tape and a Mica tape wrapped over the core of the fire retardant optical fibre cable.

Abstract: The present disclosure provides an optical fibre ribbon. The optical fibre ribbon includes a plurality of optical fibres. The plurality of optical fibres is in range of about 4 to 12. In addition, each of the plurality of optical fibres is characterized by diameter. Further, the optical fibre ribbon has a pitch dpitch. Furthermore, the optical fibre ribbon is compatible with standard 250 micron optical fibre for fusion splicing. Also, the optical fibre ribbon is characterized by planarity. Also, the optical fibre ribbon is characterized by a cured coating. Also, the cured coating has characteristic of a glass transition temperature. Also, the glass transition temperature facilitates change in state of the optical fibre ribbon from hard brittle state to soft rubbery state.

Abstract: Saccharide-substituted silk fibroin compositions as well as methods for making and using the same are provided. The compositions can include at least one saccharide coupled to silk fibroin. The coupling can be via various residues on the silk fibroin.

Abstract: The method for creating an optical fiber ribbon of the present disclosure includes a first step of arranging a plurality of optical fibers in parallel to each other for creating the optical fiber ribbon. In addition, the method includes a second step of intermittently bonding the plurality of optical fibers partially at specific intervals using a matrix material. Further, intermittent bonding of the plurality of optical fibers is in pattern of text. Furthermore, intermittent bonding of the plurality of optical fibers allows the optical fiber ribbon to bend along preferential axis. Moreover, intermittent bonding of the plurality of optical fibers is in pattern of text.

Abstract: The present disclosure provides a micro sheath buffer tube with rollable optical fiber ribbons for optical fiber cable to reduce the overall cable diameter. The buffer tube indicates one or more subunits, a micro sheath layer and a plurality of water swellable yarns. The one or more subunits encloses a plurality of optical fiber ribbons. Each optical fiber ribbon of the plurality of optical fiber ribbons includes 12 optical fibers. Further, each of a plurality of optical fibers is a colored optical fiber. In addition, the micro sheath layer surrounds the one or more subunits. Furthermore, the one or more subunits has a coating layer of low smoke zero halogen material.

Abstract: An optical fiber cable with movable rip cord is provided. The optical fiber cable (100, 200, 300) comprises a core (110) having one or more optical transmission elements (114), a first layer (106) surrounding the core, a second layer (102) surrounding the first layer, wherein the second layer is relatively harder than the first layer and one or more rip cords (108) placed between the first layer and the second layer such that the one or more rip cords have a degree-of-angular movement less than ±d, wherein d is an angular distance between two consecutive rip cords of the optical fiber cable. The first layer is deformed radially towards a central axis (X) of the optical fiber cable in vicinity of the one or more rip cords, wherein deformation (116) of the first layer is equal to or greater than a diameter of the one or more rip cords.

Abstract: The present invention relates to an optical fiber cable (200) with a different binder pitch comprising a plurality of tubes (204) with one or more optical transmission elements (202), a first binder (208) and a second binder (210) wound around the plurality of tubes (204) helically. The first lay length of the first binder (208) is different than a second lay length of the second binder (210) and a lay ratio of the first lay length to the second lay length is equal to or more than 1.2. And the difference between a first stranding angle and a second stranding angle of the first binder (208) and the second binder (210) respectively is greater than or equal to 5 degrees.

Abstract: An optical fiber cable with movable rip cord is provided. The optical fiber cable (100, 200, 300) comprises a core (110) having one or more optical transmission elements (114), a first layer (106) surrounding the core, a second layer (102) surrounding the first layer, wherein the second layer is relatively harder than the first layer and one or more rip cords (108) placed between the first layer and the second layer such that the one or more rip cords have a degree-of-angular movement less than ±d, wherein d is an angular distance between two consecutive rip cords of the optical fiber cable. The first layer is deformed radially towards a central axis (X) of the optical fiber cable in vicinity of the one or more rip cords, wherein deformation (116) of the first layer is equal to or greater than a diameter of the one or more rip cords.

Abstract: A gas leak proof corrugated sheath design for reducing friction in an optical fiber cable (100) includes a plurality of ribbons (102) in a plurality of ribbon bundles (104), one or more water swellable yarns (110), a first layer (106), one or more ripcords (108), one or more strength members (112) and a second layer (114). The first layer, surrounding the plurality of ribbon bundles by the second layer having a plurality of ribs (116) and a plurality of grooves (118) to reduce number of contact points between the optical fiber cable and a duct to reduce coefficient of friction between the second layer and an inner surface of the duct.

Abstract: A ribbed and grooved fiber cable (100) includes a core with a plurality of optical fibers, a sheath (102) enveloping the core and one or more strength members (108) embedded in the sheath (102). The strength members (108) are coated with a water blocking coating material having at least one of an ultraviolet (UV) curable water swellable resin composition and a layer of ethylene acrylic acid (EAA). Particularly, the water blocking coating material applied over the strength members (108) has a thickness of 50±10 microns. The sheath (102) of the cable (100) has at least one of a plurality of ribs (104) and grooves (106) on an external surface of the sheath (102), and a plurality of ribs (104a) and grooves (106a) on an internal surface of the sheath (102). The plurality of ribs (104) have variable height.

Abstract: The present disclosure provides an intermittently bonded optical fibre ribbon. The intermittently bonded optical fibre ribbon includes a plurality of optical fibres. The plurality of optical fibres has bonded regions and un-bonded regions between adjacent optical fibres of the plurality of optical fibres. The bonded regions have a plurality of bonds. Each bonded region has a bond of the plurality of bonds joining the adjacent optical fibres such that the bond does not cover a top optical fibre region and a bottom optical fibre region of the plurality of optical fibres.

Abstract: The present disclosure provides a method for stacking of a plurality of optical fibre ribbons (106). The plurality of optical fibre ribbons (106) is defined by a top surface (S1) and a bottom surface (S2). The top surface (S1) and bottom surface (S2) are defined by a plurality of elevated regions and a plurality of groove regions. The method for stacking of the plurality of optical fibre ribbons (106) includes arranging the plurality of optical fibre ribbons (106) over each other such that the plurality of elevated regions of each of the plurality of optical fibre ribbons fits over the plurality of groove regions of an adjacent optical fibre ribbon of the plurality of optical fibre ribbons (106). In addition, arrangement of the plurality of optical fibre ribbons forms an optical fibre ribbon stack (200).

Abstract: The present disclosure relates to method for underground installation of a pre-ducted optical fiber cable assembly. The method includes a first step of drilling a first pilot bore from a second manhole to a first manhole. In addition, the method includes a second step of pulling the pre-ducted optical fiber cable assembly. Further, the method includes a third step of drilling a second pilot bore from a third manhole to the second manhole. Furthermore, the method includes a fourth step of pulling the pre-ducted optical fiber cable assembly from the second manhole to the third manhole. Moreover, the method of underground installation of the pre-ducted optical fiber cable assembly eliminates the need for blowing the pre-ducted optical fiber cable assembly with a cable blowing machine.

Abstract: A gas leak proof corrugated sheath design for reducing friction in an optical fiber cable (100) includes a plurality of ribbons (102) in a plurality of ribbon bundles (104), one or more water swellable yarns (110), a first layer (106), one or more ripcords (108), one or more strength members (112) and a second layer (114). The first layer, surrounding the plurality of ribbon bundles by the second layer having a plurality of ribs (116) and a plurality of grooves (118) to reduce number of contact points between the optical fiber cable and a duct to reduce coefficient of friction between the second layer and an inner surface of the duct.

Abstract: An intermittently bonded optical fibre ribbon includes a plurality of optical fibres. The plurality of optical fibres is defined by at least two adjacent central optical fibers, a first plurality of optical fibers and a second plurality of fibers. The at least two adjacent central optical fibers are sandwiched between the first plurality of optical fibers and the second plurality of optical fibers. The at least two adjacent central optical fibers are fully bonded along length of the at least two central fibres. The first plurality of fibers and the second plurality of optical fibers are bonded partially along non-central length of the plurality of optical fibres.

Abstract: The present disclosure provides an optical fiber cable (100). The optical fiber cable (100) includes a first layer (108) and a second layer (110). The second layer (110) surrounds the first layer (108). The first layer (108) includes a first plurality of buffer tubes (122). The second layer (110) comprises a second plurality of buffer tubes (124). Each buffer tube of the first plurality of buffer tubes (122) and the second plurality of buffer tubes (124) has a thickness of at most 0.15 millimeter. Each buffer tube of the first plurality of buffer tubes (122) and the second plurality of buffer tubes (124) includes a first material layer (126) and a second material layer (128). The second material layer (128) surrounds the first material layer (126). The first material layer (126) is made of polybutylene terephthalate. The second material layer (128) is made of polycarbonate.

Abstract: The present disclosure provides an optical fiber cable. The optical fiber cable includes at least one optical fiber ribbon stack. In addition, the at least one optical fiber ribbon stack includes a plurality of stacked ribbons. Further, each ribbon of the plurality of stacked ribbons includes a plurality of optical fibers. The plurality of optical fibers includes edge fibers. The edge fibers are defined as the at least one optical fiber having a mach number of at most 7.2 disposed at a first end and a second end of a first ribbon and a last ribbon of the plurality of stacked ribbons.