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：US20230324602A1

公开(公告)日：2023-10-12

申请号：US18176565

申请日：2023-03-01

Applicant: Sterlite Technologies Limited

Inventor： Apeksha Malviya ,  Janarthanan Balakrishnan ,  Priya Gupta ,  Shubham Kumar ,  Srinivas Reddy ,  Anand Pandey

IPC: C03B37/012 ,  G02B6/02 ,  G02B6/036

CPC classification number: G02B6/02042 ,  C03B37/01222 ,  G02B6/02009 ,  G02B6/03638

Abstract: The present invention relates to an optical fiber with improved bend performance and manufacturing method thereof. The optical fiber (100) comprises a core region (108) defined by a core refractive index profile (200) and a cladding region (106) surrounding the core region defined by a cladding refractive index profile (400). Particularly, the core region has a first core (102) defined by a first core refractive index (RI) profile (202) and a first core RI max (Δpeak) and a second core (104) defined by a second core RI profile (204) and a second core RI max (Δcore). Moreover, the cladding region further comprises a first cladding (106) and a third cladding (110) composed of pure silica and a second cladding (108) composed of a down-doped silica, where the down-dopant is fluorine.

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.

公开(公告)号：US20230314698A1

公开(公告)日：2023-10-05

申请号：US18177061

申请日：2023-03-01

Applicant: Sterlite Technologies Limited

Inventor： Apeksha Malviya ,  Priya Gupta ,  Srinivas Reddy ,  Anand Pandey

IPC: G02B6/028 ,  G02B6/02

CPC classification number: G02B6/0281 ,  G02B6/02004

Abstract: The present invention relates to an optical fiber (100) comprising a core region (102) having radius R1 and a cladding region (104) having a radius R3. In particular, the core region (102) is defined along a central longitudinal axis (110) and the cladding region (104) is defined along the central longitudinal axis (110) of the optical fiber (100). Moreover, the optical fiber (100) has a Mode Field Diameter in a range of 8.5+/−0.3 microns at a wavelength of 1310 nanometers, a micro-bending loss of less than equal to 0.5 dB/Km at a wavelength of 1550 nanometers, macro-bending loss of less than 1 dB/Km at a wavelength 1550 nanometers. Further, the optical fiber (100) has a diameter of less than 210 microns.

公开(公告)号：US20220315474A1

公开(公告)日：2022-10-06

申请号：US17485495

申请日：2021-09-26

Applicant: Sterlite Technologies Limited

Inventor： Anand Pandey ,  Ranjith Balakrishnan ,  Srinivas Reddy ,  Apeksha Malviya

IPC: C03B37/027 ,  C03B37/012 ,  G02B6/02

Abstract: The present invention relates to 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.

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：US12195380B2

公开(公告)日：2025-01-14

申请号：US17485495

申请日：2021-09-26

Applicant: Sterlite Technologies Limited

Inventor： Anand Pandey ,  Ranjith Balakrishnan ,  Srinivas Reddy ,  Apeksha Malviya

IPC: C03B37/012 ,  C03B37/027 ,  G02B6/02

Abstract: 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.

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.