公开(公告)号：US20250052948A1

公开(公告)日：2025-02-13

申请号：US18798735

申请日：2024-08-08

Applicant: Sterlite Technologies Limited

Inventor： APEKSHA MALVIYA ,  Harshika Digarse ,  Srinivas Munige ,  Anand Pandey

IPC: G02B6/036 ,  G02B6/02 ,  G02B6/44

Abstract: The present invention relates to an optical fiber (100, 101, 103, 105, 107) having a core region (102) and a cladding region (104). In particular, the cladding region (104) has exactly one down-doped region (210, 310) and an undoped region (212, 312). The down doped region (210, 310) is a continuous region adjacent to core region (102) such that radial position of minimum relative refractive index (214, 314) of the optical fiber (100, 101, 103, 105, 107) is within 3 micrometers (μm) from interface between the down doped region (210, 310) and the undoped region (212, 312). Further, the mode field diameter of the optical fiber (100, 101, 103, 105, 107) is in range of 8.8 μm to 9.6 μm at a wavelength 1310 nanometres (nm), and cable cut-off of the optical fiber (100, 101, 103, 105, 107) is less than or equal to 1260 nm.

公开(公告)号：US11573369B2

公开(公告)日：2023-02-07

申请号：US17316719

申请日：2021-05-11

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Munige ,  Apeksha Malviya ,  Anand Pandey

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

Abstract: The present disclosure provides an optical fibre (100). The optical fibre (100) includes a glass core (102), a trench region (106) and a cladding (108). The trench region (106) has a trench curve parameter αtrench in range of 5 to 8. The optical fibre (100) has a mode field diameter in range of 8.7 micrometers to 9.7 micrometers at wavelength of 1310 nanometer.

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：US20220003923A1

公开(公告)日：2022-01-06

申请号：US17316719

申请日：2021-05-11

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Munige ,  Apeksha Malviya ,  Anand Pandey

IPC: G02B6/02

Abstract: The present disclosure provides an optical fibre (100). The optical fibre (100) includes a glass core (102), a trench region (106) and a cladding (108). The trench region (106) has a trench curve parameter αtrench in range of 5 to 8. The optical fibre (100) has a mode field diameter in range of 8.7 micrometers to 9.7 micrometers at wavelength of 1310 nanometer.

公开(公告)号：US20220003922A1

公开(公告)日：2022-01-06

申请号：US17316717

申请日：2021-05-11

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Munige ,  Apeksha Malviya ,  Anand Pandey

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

Abstract: The present disclosure provides an optical fibre (100). The optical fibre (100) includes a glass core region (102). The glass core region (102) has a core relative refractive index profile. The core relative refractive index profile is a super Gaussian profile. In addition, the optical fibre (100) includes a glass cladding region (108) over the glass core region (102). The optical fibre (100) 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 (100) 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 (100) 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.

公开(公告)号：US11592616B2

公开(公告)日：2023-02-28

申请号：US17316717

申请日：2021-05-11

Applicant: Sterlite Technologies Limited

Inventor： Srinivas Munige ,  Apeksha Malviya ,  Anand Pandey

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

Abstract: The present disclosure provides an optical fibre (100). The optical fibre (100) includes a glass core region (102). The glass core region (102) has a core relative refractive index profile. The core relative refractive index profile is a super Gaussian profile. In addition, the optical fibre (100) includes a glass cladding region (108) over the glass core region (102). The optical fibre (100) 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 (100) 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 (100) 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.

公开(公告)号：US20210247566A1

公开(公告)日：2021-08-12

申请号：US17175326

申请日：2021-02-12

Applicant: Sterlite Technologies Limited

Inventor： Apeksha Malviya ,  Srinivas Munige ,  Anand Kumar Pandey

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

Abstract: An optical fibre includes a glass core defined by a central core region surrounded by an outer core region. The glass core has a core thickness of 3.5 to 6 micrometers. The central core region has a centerline dip. The central dip has a centerline width in range of about 0 to 3 micrometers. The outer core region has a core alpha in a range of 3-8. The optical fibre includes a buffer clad region, a trench region and an outer cladding region. The outer cladding region has at least one of an outer cladding thickness in range of 41.5 to 46.5 micrometers and an outer cladding relative refractive index near zero.

公开(公告)号：US20210048579A1

公开(公告)日：2021-02-18

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

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.