Title:
WDM OPTICAL TRANSMISSION SYSTEM WITH PASSIVE HUB
Document Type and Number:
WIPO Patent Application WO2003061140
Kind Code:
A3
Abstract:
A method and apparatus for a wavelength division multiplexing (WDM) optical transmission system (200) wherein the optical transmission system (200) has an optical signal transmitter (220) which functions as a passive hub, in which only optical signal processing is performed, while associated electronic signal processing is performed outside the passive hub. The passive hub includes upconverter devices (225) that place the optical signal bands at frequencies that allow separation of the bands at a detector (461). The detectors (461) are thus loaded with more than one wavelength at a time. The optical transmission signals are optically combined and/or amplified onto a single fiber that is fed to a headend device (270), where the wavelengths of the optical transmission signals are demultiplexed and fed to the receivers (280).
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Inventors:
SCHEMMANN MARCEL F C
MUTALIK VENKATESH G
MUTALIK VENKATESH G
Application Number:
PCT/IB2002/005319
Publication Date:
January 20, 2005
Filing Date:
December 10, 2002
Export Citation:
Assignee:
KONINKL PHILIPS ELECTRONICS NV (NL)
International Classes:
H04L12/44; H04B10/27; H04B10/272; H04J14/00; H04J14/02; (IPC1-7): H04J14/02
Domestic Patent References:
| WO2000064087A1 | 2000-10-26 |
Other References:
REICHMANN K C ET AL: "OPERATIONAL DEMONSTRATION AND FILTER ALIGNMENT STUDY OF MULTIPLE BROADCAST VIDEO DELIVERY ON A WDM PASSIVE OPTICAL NETWORK", IEEE PHOTONICS TECHNOLOGY LETTERS, IEEE INC. NEW YORK, US, vol. 10, no. 9, 1 September 1998 (1998-09-01), pages 1331 - 1333, XP000783243, ISSN: 1041-1135
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