Sterlite Technologies Limited

Apeksha Malviya

Anand Kumar Pandey

Srinivas Reddy Munige

Ranjith Balakrishnan

Srinivas Reddy

Shubham

Janarthanan Balakrishnan

Anand Pandey

The present invention relates to an optical fiber () comprising a silica region (), a first coating (), and a second coating (). The first coating () is adapted to cover an outer circumference of the silica region (). The second coating () adapted to cover an outer surface of the first coating (). Moreover, the first coating () and the second coating () are adapted to cause a coating induced micro bend loss that is less than 2.2×10Nmm.

Optical fiber with improved microbending performance

The present invention discloses a preform assembly and a method for drawing a multicore optical fibre and a holey fibre. Particularly, the preform assembly includes a hollow cylindrical tube, a plurality of discs stacked inside the hollow cylindrical tube and a plurality of core rods inserted in a plurality of through holes in each of the plurality of discs.

Preform assembly for drawing multicore or holey optical fibre and method of manufacturing thereof

Disclosed is a multi-core optical fiber having a plurality of cores extending parallelly along a central axis of the multi-core optical fiber. Each core of the plurality of cores is up-doped with an up-dopant. The multi-core optical fiber further has a plurality of buffer layers such that each buffer layer of the plurality of buffer layers envelop a corresponding core of the plurality of cores. Each buffer layer of the plurality of buffer layers has a predefined buffer layer thickness. The multi-core optical fiber further has a plurality of trench layers such that each trench layer of the plurality of trench layers envelops a corresponding buffer layer of the plurality of buffer layers. Each trench layer of the plurality of trench layers is down-doped with a down-dopant. The multi-core optical fiber has an inter-core crosstalk of less than −30 decibel/kilometres (dB/km) at a wavelength of 1550 nanometres (nm).

Trench assisted multi-core optical fiber with reduced crosstalk

The present disclosure provides an optical fibre (). The optical fibre () includes a glass core region (). The glass core region () has a core relative refractive index profile. The core relative refractive index profile is a super Gaussian profile. In addition, the optical fibre () includes a glass cladding region () over the glass core region (). The optical fibre () has at least one of a mode field diameter in a range of 8.7 micrometers to 9.7 micrometers at wavelength of 1310 nanometers and an attenuation up to 0.18 dB/km. The optical fibre () has at least one of macro-bend loss up to 0.5 decibel per turn corresponding to wavelength of 1550 nanometer at bending radius of 7.5 millimeter. The optical fibre () has a macro-bend loss up to 1.0 decibel per turn corresponding to wavelength of 1625 nanometer at bending radius of 7.5 millimeter.

Universal optical fibre with super Gaussian profile

The present disclosure provides an optical fibre (). The optical fibre () includes a glass core (), a trench region () and a cladding (). The trench region () has a trench curve parameter &#x3b1;in range of 5 to 8. The optical fibre () has a mode field diameter in range of 8.7 micrometers to 9.7 micrometers at wavelength of 1310 nanometer.

Universal optical fibre compatible with rod-in-cylinder

The present disclosure provides an optical fibre. The optical fibre includes a core, an inner cladding, a first trench region, an intermediate cladding, a second trench region, and an outer cladding. The core has a first radius. The inner cladding is defined by the first radius and a second radius of the optical fibre. The first trench region is defined by the second radius and a third radius. The first trench region. The intermediate cladding is defined by the third radius and a fourth radius. The second trench region is defined by the fourth radius and a fifth radius. The outer cladding is defined by the fifth radius and a sixth radius.

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Gurugram, India

Apeksha Malviya