Sterlite Technologies Limited

Sravan Kumar

Kishore Chandra Sahoo

Atul Kumar Mishra

Vikash Shukla

Kavya Chintada

Seldon David Benjamin

Anand Kumar Pandey

Venkatesh Murthy

Hemanth Kondapalli

Pavan Kumar Moturu

Pramod Marru

Atulkumar Mishra

Vikas Shukla

Mahesh Deshpande

Phill Coppin

Shivam Srivastava

Kangabam Tenzing

Atul Mishra

Manoj Mittal

Dnyaneshwar Wagh

Kishore Sahoo

Kangbang Singh Tenzing

Neha Thakur

Gahininath Shinde

Akhil Garg

Parag Gawande

Sashanka Some

Vishnu Rajsekar

Liu Buyong

Roshan Kumar

Steve Bullock

Seldon Benjamin

Prasanna Pardeshi

The present disclosure provides a method of single ring marking of an optical fiber. The method includes a first step of marking a first single ring marking of the optical fiber. In addition, the method includes a second step of marking a second single ring marking of the optical fiber. Further, the present disclosure provides a method of double ring marking of an optical fiber. Furthermore, the method includes a first step of marking a first ring marking, a second step of marking a second ring marking and a third step of marking a third ring marking.

Method of ring marking of an optical fiber and optical fiber thereof

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 (). The optical fiber cable () includes one or more optical fiber (), one or more loose tube () surrounding the one or more optical fiber () and an outer sheath () surrounding the one or more loose tube (). The material composition of the one or more loose tube () is a mixture of a first material and a second material. The flexural modulus of the first material is at least 1000 MPa. The flexural modulus of the second material is at most 50 MPa. The material composition of the outer sheath () is a mixture of a first material and a second material. The flexural modulus of the first material is at least 500 MPa. The flexural modulus of the second material is at most 50 MPa.

Flexible optical fiber cable

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 d. 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.

Flexible optical fiber ribbon

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.

Intermittently bonded optical fibre ribbon

A buffer tube for an optical fiber cable provided by the present disclosure includes an optical fiber ribbon stack, a first layer, a second layer, an optical fiber cable, a central strength member, a plurality of buffer tubes, a water blocking layer, and a sheath and plurality of rip cords. The first layer is an inner layer of the buffer tube. The first layer is made of a soft material. The soft material of the first layer is one of low smoke zero halogen, thermoplastic elastomers and thermoplastic polyurethane. The second layer is an outer layer of the buffer tube. The second layer surrounds the first layer. The second layer is made of a hard material. The hard material of the second layer is one of polypropylene, polybutylene terephthalate, and nylon.

Dual layer buffer tube

The present disclosure provides a matrix material for a rollable optical fibre ribbon. The rollable optical fibre ribbon includes a plurality of optical fibres and the matrix material. In addition, each of the plurality of optical fibres is placed parallel to other optical fibres of the plurality of optical fibres. Further, the matrix material joins the plurality of optical fibres. Furthermore, the matrix material has different glass transition temperature at different pressures.

Matrix material for rollable optical fiber ribbons

The optical fibre ribbon of the present disclosure has one or more base access. The optical fibre ribbon of the present disclosure includes a plurality of optical fibres, a coating layer bonding the plurality of optical fibres, and a slit. The slit in the optical fibre ribbon is made between two optical fibres of the plurality of the optical fibres. The optical fibre ribbon has flat surface on top and corrugated surface in bottom. The optical fibre ribbon has a coating layer that is a layer of matrix material. The coating layer is made of single layer of matrix material.

Arrangement of optical fibre ribbon stack and an optical fibre ribbon thereof

The present disclosure provides a method for stacking of a plurality of optical fibre ribbons (). The plurality of optical fibre ribbons () is defined by a top surface (S) and a bottom surface (S). The top surface (S) and bottom surface (S) 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 () includes arranging the plurality of optical fibre ribbons () 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 (). In addition, arrangement of the plurality of optical fibre ribbons forms an optical fibre ribbon stack ().

Optical fibre ribbon and optical fibre cables thereof

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 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.

Multi loose tube ribbon 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.

Bendable optical fiber ribbon

The present disclosure provides an optical fiber cable (). The optical fiber cable () includes a plurality of optical fibers ribbons () lying substantially along a longitudinal axis () of the optical fiber cable (). Further, the optical fiber cable () includes a first layer () surrounding the plurality of optical fibers ribbons (). Furthermore, the optical fiber cable () includes a second layer () surrounding the first layer (). Furthermore, the optical fiber cable () includes a third layer () surrounding the second layer (). Moreover, the optical fiber cable () includes a fourth layer () surrounding the third layer (). The first layer () is a water blocking tape. The third layer () is sandwich of water blocking material and ECCS steel tape. Moreover, the optical fiber cable () includes two pairs of strength members (--) embedded inside the second layer ().

Growing community of inventors

Aurangabad, India

Sravan Kumar