公开(公告)号：US20250132833A1

公开(公告)日：2025-04-24

申请号：US18493593

申请日：2023-10-24

Applicant: Nokia Solutions and Networks Oy

Inventor： ROBERT BORKOWSKI ,  Kovendhan Vijayan

IPC: H04B10/2537 ,  H04B10/532 ,  H04Q11/00

Abstract: Various example embodiments supporting optical communications in an optical communication system may be configured to support joint stimulated Brillouin scattering (SBS) suppression and polarization tracking for a set of orthogonal polarization optical channels in an intensity modulated/direct detection (IM/DD) passive optical network (PON). Various example embodiments may be configured to support joint SBS suppression and polarization tracking for a set of orthogonal polarization optical channels based on a set of frequency tones (e.g., using a single frequency tone per optical channel in the set of orthogonal polarization optical channels, respectively) such that SBS suppression is supported for transmissions from the transmitter (e.g., based on application of the frequency tones to the optical channels) and polarization tracking is supported at the receiver (e.g., based on use of one or more of the frequency tones of the optical channels in the set of orthogonal polarization optical channels for polarization tracking).

公开(公告)号：US20250097612A1

公开(公告)日：2025-03-20

申请号：US18469515

申请日：2023-09-18

Applicant: Nokia Solutions and Networks Oy

Inventor： Kovendhan Vijayan ,  Robert Borkowski ,  Vincent Houtsma ,  Doutje Van Veen ,  Amitkumar Mahadevan

IPC: H04Q11/00 ,  G02B6/293 ,  H04B10/25

Abstract: Various example embodiments for providing a passive optical network (PON), supporting communications between an optical line terminal (OLT) and a set of optical network units (ONUs) of a PON, are presented. The PON may be enabled based on use of an optical frequency comb (OFC), generated at the OLT and reconstructed at the ONUs for locking the OFC at the ONUs to the OFC at the OLT. The OFC may include a set of optical frequency lines used as seed lines for reconstruction of the OFC at the ONUs (e.g., the pair of OFC lines at the center of the OFC which may be used to regenerate locked OFCs at the ONUs), a set of optical frequency lines used to support downstream communications from the OLT to the ONUs, and a set of optical frequency lines used to support upstream communications from the ONUs to the OLT.

公开(公告)号：US20240413902A1

公开(公告)日：2024-12-12

申请号：US18331919

申请日：2023-06-08

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Robert Borkowski ,  Vincent Houtsma ,  Doutje Van Veen ,  Amitkumar Mahadevan ,  Kovendhan Vijayan

IPC: H04B10/079

Abstract: Various example embodiments of a signal analysis capability are presented herein. The signal analysis capability may be configured to support analysis of a signal for determining the signal integrity of the signal, where the signal integrity of the signal corresponds to a set of one or more measures of the quality of an electrical signal (e.g., one or more signal integrity metrics indicative of the signal integrity of the signal). The signal analysis capability may be configured to support analysis of a signal for determining the signal integrity of the signal for various types of signals which may be communicated within various types of communication networks. The signal analysis capability may be configured to support analysis of a signal for determining the signal integrity of the signal where the signal may include various types of data traffic (e.g., live data traffic, user data traffic, test data traffic, or the like).

公开(公告)号：US20250097002A1

公开(公告)日：2025-03-20

申请号：US18469524

申请日：2023-09-18

Applicant: Nokia Solutions and Networks Oy

Inventor： Kovendhan Vijayan ,  Robert Borkowski

IPC: H04L7/00 ,  H04Q11/00

Abstract: Various example embodiments for supporting optical communications in an optical communication system are presented. Various example embodiments for supporting optical communications in an optical communication system may be configured to support optical communications in a passive optical network (PON). Various example embodiments for supporting optical communications in an optical communication system such as a PON may be configured to support clock synchronization in the PON and polarization tracking in the PON. Various example embodiments for supporting optical communications in a PON may be configured to support joint clock synchronization and polarization tracking the PON. Various example embodiments for supporting optical communications in an optical communication system such as a PON may be configured to support clock synchronization in the PON and polarization tracking in the PON, along with various other functions (e.g., symbol rate sampling and so forth).

公开(公告)号：US20250096903A1

公开(公告)日：2025-03-20

申请号：US18469532

申请日：2023-09-18

Applicant: Nokia Solutions and Networks Oy

Inventor： Doutje Van Veen ,  Vincent Houtsma ,  Robert Borkowski ,  Kovendhan Vijayan

IPC: H04B10/532 ,  H04B10/50 ,  H04B10/60 ,  H04Q11/00

Abstract: Various example embodiments for supporting optical communications in an optical communication system may be configured to support dual-polarization based communications within the context of a direct detection based point-to-multipoint optical network (e.g., a passive optical network (PON) based on direction detection). Various example embodiments for supporting optical communications in an optical communication system may be configured to support optical communications based on application of dual polarizations to each of one or more wavelengths within the context of a direct detection based point-to-multipoint optical network to support multiple optical channels within the direct detection based point-to-multipoint optical network (e.g., a single wavelength with two polarizations to provide two optical channels, two wavelengths each with two polarizations to provide four optical channels, three wavelengths each with two polarizations to provide six optical channels, and so forth) and, thus, support increased data carrying capacity within the direct detection based point-to-multipoint optical network.