Optical communications – Diagnostic testing – Determination of communication parameter
Reexamination Certificate
2006-11-28
2006-11-28
Chan, Jason (Department: 2613)
Optical communications
Diagnostic testing
Determination of communication parameter
C398S097000, C398S159000, C398S079000, C359S334000, C359S337200
Reexamination Certificate
active
07142782
ABSTRACT:
The invention is aimed at providing a simple noise light elimination technique capable of eliminating noise light components contained in a signal light, together with wavelength components same as for the signal wavelength, with the condition of the light remaining as is, and an optical transmission system. To this end, an optical transmission system applied with a noise light elimination method according to the present invention comprises a high output type optical repeater and a noise light elimination unit for each required repeating span. This noise light elimination unit includes a dummy transmission path that, when a light of a power exceeding a threshold value is input, generates a return light due to stimulated Brillouin scattering (SBS). The signal light amplified in the optical repeater up to the power exceeding the threshold value is input to the dummy transmission path via an optical input/output section of the noise light elimination unit. The return light due to SBS generated in the dummy transmission path is extracted via the optical input/output section. As a result, the noise light components contained in the signal light are eliminated.
REFERENCES:
patent: 6462844 (2002-10-01), Kai et al.
patent: 6549696 (2003-04-01), Uetsuka et al.
patent: 6580536 (2003-06-01), Chraplyvy et al.
patent: 2001/0017729 (2001-08-01), Sugaya et al.
patent: 2002/0131104 (2002-09-01), Johnson et al.
patent: 07-199244 (1995-08-01), None
patent: 7-199244 (1995-08-01), None
patent: 07199244 (1995-08-01), None
patent: 10-308703 (1998-11-01), None
Chan Jason
Staas & Halsey , LLP
Wang Quan-Zhen
LandOfFree
Noise light elimination method, noise light elimination... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Noise light elimination method, noise light elimination..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Noise light elimination method, noise light elimination... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3664831