Spectral shaping for optical OFDM transmission

Optical communications – Diagnostic testing – Determination of communication parameter

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C398S028000, C398S038000, C398S076000, C398S193000, C398S197000, C398S198000

Reexamination Certificate

active

07580630

ABSTRACT:
A transmitter for an optical transmission system transmits an optical sub carrier multiplexed signal comprising number of sub-carriers, onto an optical transmission path, and provides spectral shaping by different magnitudes of the sub-carriers, or different modulation formats for different sub carriers. This spectral shaping can reduce performance degradation by Kerr effect optical non linearities. This can mean higher input powers may be launched. The magnitudes can provide a signal spectrum which is lower near a center of a band of sub carriers than near an edge of the band. Such spectral shaping can be provided in the receiver either to undo the pre emphasis in the transmitter, or to reduce non linearities from components at the receiving side.

REFERENCES:
patent: 4581730 (1986-04-01), Ozeki et al.
patent: 5566381 (1996-10-01), Korotky
patent: 5850303 (1998-12-01), Yamamoto et al.
patent: 5896211 (1999-04-01), Watanabe
patent: 5999300 (1999-12-01), Davies et al.
patent: 6275313 (2001-08-01), Denkin et al.
patent: 6469812 (2002-10-01), McKiel, Jr.
patent: 6525857 (2003-02-01), Way et al.
patent: 6626592 (2003-09-01), Watanabe
patent: 7012912 (2006-03-01), Naguib et al.
patent: 7076169 (2006-07-01), Shpantzer et al.
patent: 04054034 (1992-02-01), None
patent: 03/028252 (2003-04-01), None
U.S. Appl. No. 10/679,824, filed Oct. 6, 2003, Rickard et al.
U.S. Appl. No. 10/780,430, filed Feb. 17, 2004, Feced et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Spectral shaping for optical OFDM transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Spectral shaping for optical OFDM transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Spectral shaping for optical OFDM transmission will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-4079066

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.