公开(公告)号：US20210033782A1

公开(公告)日：2021-02-04

申请号：US16849526

申请日：2020-04-15

Applicant: Sterlite Technologies Limited

Inventor： Anand Kumar Pandey ,  Apeksha Malaviya ,  Malleswara Rao Lanke ,  Srinivas Reddy

IPC: G02B6/02 ,  G02B6/028

Abstract: The present disclosure provides an optical fibre. The optical fibre includes a core region, a primary trench region and a secondary trench region. The core region has a radius r1. In addition, the core region has a relative refractive index Δ1. Further, the primary trench region has a relative refractive index Δ3. Furthermore, the primary trench region has a curve parameter αtrench-1. Moreover, the secondary trench region has a relative refractive index Δ4. Also, the secondary trench region has a curve parameter αtrench-2.

公开(公告)号：US20190162897A1

公开(公告)日：2019-05-30

申请号：US15942274

申请日：2018-03-30

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Reddy Munige ,  Anand Kumar Pandey

IPC: G02B6/028 ,  G02B6/02 ,  G02B6/036 ,  H04J14/04

Abstract: The present disclosure provides a few mode optical fiber. The few mode optical fiber includes a core region. A core region defined by a region around a central longitudinal axis of the few mode optical fiber. In addition, the core region has a first annular region extended from central longitudinal axis to radius r1, a second annular region extended from radius r1 to radius r2, a third annular region extended from radius r2 to radius r3, a fourth annular region extended from radius r3 to radius r4 and a fifth annular region extended from radius r4 to radius r5. Also, the few mode optical fiber has a cladding defined by the sixth annular region extended from radius r5 to radius r6.

公开(公告)号：US20250002391A1

公开(公告)日：2025-01-02

申请号：US18747864

申请日：2024-06-19

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Reddy Munige ,  Ranjith Balakrishnan ,  Anand Kumar Pandey

IPC: C03B37/012 ,  C03B37/014 ,  C03B37/027 ,  G02B6/028

Abstract: The present invention relates to a method (300) for drawing an optical fiber (101) having step of stacking (302) at least two glass sub-preforms of a plurality of glass sub-preforms (114a-114n) inside a hollow cylindrical glass tube (108) to form a master glass preform (130) and melting (304) the bottom end (134) of the master glass preform (130) in a furnace (110) to continuously draw an optical fiber (101). In particular, the at least two glass sub-preforms are stacked in such that the master glass preform has a top end (132) and a bottom end (134) and each of the glass sub-preforms is defined by a first end (126) and a second end (128). Further, the first end (126) of a successive glass sub-preform is stacked on the second end (128) of a previous glass sub-perform such that the successive glass sub-preform rests on the previous glass sub-preform.

公开(公告)号：US11327222B2

公开(公告)日：2022-05-10

申请号：US16849526

申请日：2020-04-15

Applicant: Sterlite Technologies Limited

Inventor： Anand Kumar Pandey ,  Apeksha Malaviya ,  Malleswara Rao Lanke ,  Srinivas Reddy

IPC: G02B6/02 ,  G02B6/028 ,  G02B6/036

Abstract: The present disclosure provides an optical fibre. The optical fibre includes a core region, a primary trench region and a secondary trench region. The core region has a radius r1. In addition, the core region has a relative refractive index Δ1. Further, the primary trench region has a relative refractive index Δ3. Furthermore, the primary trench region has a curve parameter αtrench-1. Moreover, the secondary trench region has a relative refractive index Δ4. Also, the secondary trench region has a curve parameter αtrench-2.

公开(公告)号：US10520670B2

公开(公告)日：2019-12-31

申请号：US15942274

申请日：2018-03-30

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Reddy Munige ,  Anand Kumar Pandey

IPC: G02B6/028 ,  G02B6/036 ,  G02B6/02 ,  H04J14/04

Abstract: The present disclosure provides a few mode optical fiber. The few mode optical fiber includes a core region. A core region defined by a region around a central longitudinal axis of the few mode optical fiber. In addition, the core region has a first annular region extended from central longitudinal axis to radius r1, a second annular region extended from radius r1 to radius r2, a third annular region extended from radius r2 to radius r3, a fourth annular region extended from radius r3 to radius r4 and a fifth annular region extended from radius r4 to radius r5. Also, the few mode optical fiber has a cladding defined by the sixth annular region extended from radius r5 to radius r6.

公开(公告)号：US11714227B2

公开(公告)日：2023-08-01

申请号：US16528808

申请日：2019-08-01

Applicant: Sterlite Technologies Limited

Inventor： Apeksha Malaviya ,  Srinivas Reddy Munige ,  Anand Kumar Pandey

IPC: G02B6/02 ,  G02B6/028 ,  G02B6/036

CPC classification number: G02B6/028 ,  G02B6/0365 ,  G02B6/03694

Abstract: The present disclosure provides a universal optical fiber (100). The universal optical fiber (100) includes a core (102) extended from a central longitudinal axis (110) to a first radius r1. In addition, the universal optical fiber (100) includes a buffer clad (104) region extending from the first radius r1 to a second radius r2. Further, the universal optical fiber (100) includes a trench region (106) extending from the second radius r2 to a third radius r3. Furthermore, the universal optical fiber (100) includes a cladding (108) extending from the third radius to a fourth radius r4. Moreover, the core (102), the buffer clad region (104), the trench region (106) and the cladding (108) are concentrically arranged.

公开(公告)号：US11573368B2

公开(公告)日：2023-02-07

申请号：US17316725

申请日：2021-05-11

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Reddy Munige ,  Apeksha Malviya ,  Anand Kumar Pandey

IPC: G02B6/02 ,  G02B6/036 ,  G02B6/36

Abstract: 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.

公开(公告)号：US20210033781A1

公开(公告)日：2021-02-04

申请号：US16942443

申请日：2020-07-29

Applicant: Sterlite Technologies Limited

Inventor： Apeksha Malaviya ,  Srinivas Reddy ,  MalleshwaraRao Lanke ,  Anand Kumar Pandey

IPC: G02B6/02 ,  G02B6/028 ,  G02B6/036

Abstract: The present disclosure provides an optical fibre. The optical fibre includes a core extended from a central longitudinal axis to a first radius r1. Further, the optical fibre includes a first trench region extended from a second radius r2 to a third radius r3, a second trench region extended from the third radius r3 to a fourth radius r4 and a cladding region extended from the fourth radius r4 to a fifth radius r5.

公开(公告)号：US12032203B2

公开(公告)日：2024-07-09

申请号：US16993215

申请日：2020-08-13

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Munige ,  Milind Patil ,  Malleswararao Lanke ,  Anand Kumar Pandey ,  Anant Pawale

IPC: G02B6/02

CPC classification number: G02B6/02395

Abstract: The present disclosure provides an optical fibre. The optical fibre includes a glass core, a glass cladding, a primary coating layer, and a secondary coating layer. The glass cladding surrounds the glass core. In addition, the primary coating layer sandwiched between the glass cladding and the secondary coating layer. Further, the secondary coating layer surrounds the primary coating layer. The primary coating layer has diameter of up to is in the range of 130 to 155 micrometers. Furthermore, the secondary coating layer has diameter in a range of about 160 micrometers to 180 micrometers. Moreover, diameter of the optical fibre is about 190 micrometers.

公开(公告)号：US11561341B2

公开(公告)日：2023-01-24

申请号：US16942443

申请日：2020-07-29

Applicant: Sterlite Technologies Limited

Inventor： Apeksha Malaviya ,  Srinivas Reddy ,  MalleshwaraRao Lanke ,  Anand Kumar Pandey

IPC: G02B6/036 ,  G02B6/028 ,  G02B6/02

Abstract: The present disclosure provides an optical fibre. The optical fibre includes a core extended from a central longitudinal axis to a first radius r1. Further, the optical fibre includes a first trench region extended from a second radius r2 to a third radius r3, a second trench region extended from the third radius r3 to a fourth radius r4 and a cladding region extended from the fourth radius r4 to a fifth radius r5.