Sterlite Technologies Limited

Other

Vikash Shukla

Kishore Chandra Sahoo

Sravan Kumar

Atul Kumar Mishra

Hemanth Kondapalli

Atulkumar Mishra

Venkatesh Murthy

Kavya Chintada

Swapnil Sharma

Sharun Kuhar

Pavan Kumar Moturu

Pramod Marru

Sravan Kumar Peraka

Kishore Sahoo

Aparna Nath

Atul Mishra

Bhaskar Sarkaar

Akhil Garg

Gahininath Shinde

Mahesh Deshpande

Prassana Pardeshi

Santosh Akundi

Sharma Swapnil

Sahoo Kishore

Prasanna Pardeshi

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.

Cable with interstitial fillers and edge ribbons

The present disclosure provides an optical fiber cable () with a compressed core () and manufacturing method thereof. The method includes bundling a plurality of optical transmission elements () to form a core () of the optical fiber cable () and compressing the core (). The method further includes extruding a sheath () around the compressed core (), wherein the core () is compressed to a smaller diameter by a compression tool. The compression tool has a cylindrical cavity, wherein an internal diameter of the cylindrical cavity gradually decreases from a first end to a second end of the compression tool. The core enters from the first end of the compression tool with a diameter d and exits from the second end with a diameter d-Δd, such that Δd/d is greater than or equal to 0.05.

Optical fiber cable with compressed core and manufacturing method thereof

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 are bonded intermittently along the length by a plurality of bonded portions spaced apart by a plurality of un-bonded portions. The plurality of bonded portions is defined by a bonded length Land the plurality of un-bonded portions is defined by an un-bonded length. In addition, at least one of the bonded length Land the un-bonded length varies along a predefined length of adjacent optical fibres of the plurality of optical fibres.

Intermittently bonded optical fibre ribbon with unequal bond and gap lengths

A gas leak proof corrugated sheath design for reducing friction in an optical fiber cable () includes a plurality of ribbons () in a plurality of ribbon bundles (), one or more water swellable yarns (), a first layer (), one or more ripcords (), one or more strength members () and a second layer (). The first layer, surrounding the plurality of ribbon bundles by the second layer having a plurality of ribs () and a plurality of grooves () 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.

Gas leak proof corrugated sheath design for reducing friction in optical fiber cables

A ribbed and grooved fiber cable () includes a core with a plurality of optical fibers, a sheath () enveloping the core and one or more strength members () embedded in the sheath (). The strength members () 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 () has a thickness of 50&#xb1;10 microns. The sheath () of the cable () has at least one of a plurality of ribs () and grooves () on an external surface of the sheath (), and a plurality of ribs () and grooves () on an internal surface of the sheath (). The plurality of ribs () have variable height.

Ribbed and grooved cable having embedded strength member with water blocking coating

The method provided by the present disclosure is for performing curing during manufacturing of an optical fibre ribbon. The method of the present disclosure performs a first stage of curing and a second stage of curingon a matrix material of the optical fibre ribbon. The first stage of curing is performed using a ribbon die and one or more ultraviolet light emitting diode (UV LED) units. Further, the second stage of curing is performed using a source of the one or more ultraviolet lamps (UV lamps) in an UV chamber.

Method for performing curing during manufacturing of an optical fibre ribbon

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.

Installation of pre-ducted optical fiber cable assembly

The present disclosure provides an optical fibre ribbon. The optical fibre ribbon includes a plurality of optical fibres bonded with a matrix material. The matrix material is applied along a longitudinal length of the plurality of optical fibres. Further, the plurality of optical fibres is defined by a geometrical centre and diameter. Further, the plurality of optical fibres has a predefined distance between geometrical centres of any two adjacent optical fibres of the plurality of optical fibres. Moreover, the predefined distance between geometrical centres of any two adjacent optical fibres of the plurality of optical fibres is less than 200 microns. Further, the optical fibre ribbon provides the optical fibre ribbon cable that is flexible and easy to install in space constraint regions and allows ribbons to bend easily at non-preferential axis. Furthermore, the optical fibre ribbon with reduced weight and with high mass fusion splicing capability.

Optical fiber ribbon cable

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

Dual layer micro optical fiber cable

The present disclosure provides an optical fiber cable. The optical fiber cable includes a central strength member. The central strength member lies substantially along a longitudinal axis of the optical fiber cable. The optical fiber cable includes at least one buffer tube. The at least one buffer tube is stranded helically around the central strength member. Each of the at least one buffer tube encapsulates at least one optical fiber. The optical fiber cable includes a first layer. The first layer circumferentially surrounds a core of the optical fiber cable. The optical fiber cable includes a second layer. The second layer is formed of high density polyethylene. The optical fiber cable includes at least one set of water swellable yarn and a plurality of ripcords.

Fiber multitube optical fiber cable

The present disclosure provides a stacking arrangement of an optical fiber ribbon in a buffer tube of an optical fiber cable. The stacking arrangement includes optical fiber ribbon stack, first bendable optical fiber ribbon, second bendable optical fiber ribbon, third bendable optical fiber ribbon, fourth bendable optical fiber ribbon and optical fiber ribbons. The optical fiber ribbon stack includes at least four corners. Each optical fiber at the corresponding four corners of the optical fiber ribbon stack is a bend insensitive optical fiber. One or more optical fibers are placed adjacent to each other at the corresponding four corners of the optical fiber ribbon stack.

Growing community of inventors

Aurangabad, India

Vikash Shukla