Title:
イーサネット(登録商標)受動光ネットワークにおけるラマンクロストークを軽減させるための方法およびシステム
Document Type and Number:
Japanese Patent JP4819882
Kind Code:
B2
Abstract:
One embodiment of the present invention provides a system for mitigating Raman crosstalk between downstream data and video transmission in an Ethernet passive optical network (EPON), wherein the EPON includes an optical line terminal (OLT) and one or more optical network units (ONU's). During operation, the system transmits a data stream from the OLT to the ONU's on a first wavelength that is substantially at 1490 nm. The system also transmits a video signal stream from the OLT to the ONU's on a second wavelength that is substantially at 1550 nm. The system modifies the bit sequence for the data stream to change the power spectral distribution (PSD) for the data stream, thereby reducing power spectral content in the frequency range where significant Raman crosstalk can occur between data and video signal streams.
Inventors:
Hilt, Ryan Yee.
Rum, Lowell Dee.
Glenn Kramer
Brown, Benjamin Jay.
Rum, Lowell Dee.
Glenn Kramer
Brown, Benjamin Jay.
Application Number:
JP2008511372A
Publication Date:
November 24, 2011
Filing Date:
May 10, 2006
Export Citation:
Assignee:
Techno Bus, Incorporated
International Classes:
H04B10/00; H04B10/02; H04B10/18; H04B10/20; H04B10/2581; H04J14/00; H04J14/02; H04J14/08; H04L12/44
Domestic Patent References:
| JP2006101358A | 2006-04-13 |
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita