Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-07-31
2007-07-31
Kianni, K. Cyrus (Department: 2883)
Optical waveguides
With optical coupler
Input/output coupler
C385S018000, C385S010000
Reexamination Certificate
active
11444428
ABSTRACT:
An encoder according to the present invention is an encoder for encoding an optical wavelength-multiplexed signal compliant with optical CDMA into a code having a code pattern, including: L optical fibers36and42(where L is an integer equal to or greater than two) each having a plurality of gratings37to47; and a circulator52for coupling the plurality of optical fibers36and42. The code pattern contains time bins t1to t3. A plurality of wavelengths λ1, λ4and λ5are assigned to the time bin t1. If a sum of an optical path difference in each optical fiber from the grating which reflects the optical signal of the wavelength λ1to the grating which reflects the optical signal of the wavelength λ4is calculated for all of the optical fibers36and42, the sum equals zero.
REFERENCES:
patent: 5793907 (1998-08-01), Jalali et al.
patent: 6314220 (2001-11-01), Mossberg et al.
patent: 6594421 (2003-07-01), Johnson et al.
patent: 6711313 (2004-03-01), Takiguchi et al.
patent: 6892001 (2005-05-01), Ohta et al.
patent: 2001/0010739 (2001-08-01), Takiguchi et al.
patent: 2003/0128917 (2003-07-01), Turpin et al.
patent: 2003/0161636 (2003-08-01), Ohta et al.
patent: 2006/0056764 (2006-03-01), Adachi et al.
patent: 2005-72868 (2005-03-01), None
Habib Fathallah, et al., “Passive Optical Fast Frequency-Hop CDMA Communications System,” Journal of Lightwave Technology, Mar. 1999, pp. 397-405, vol. 17, No. 3, IEEE.
Habib Fathallah, et al., “Robust Optical FFH-CDMA Communications: Coding in Place of Frequency and Temperature Controls,” Journal of Lightwave Technology, Aug. 1999, pp. 1284-1293, vol. 17, No. 8.
Adachi Jingo
Itoh Akihiro
Wakabayashi Shinichi
Kianni K. Cyrus
McDermott Will & Emery LLP
LandOfFree
Encoder/decoder for optical CDMA does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Encoder/decoder for optical CDMA, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoder/decoder for optical CDMA will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3738818