Optical communications – Multiplex – Wavelength division or frequency division
Reexamination Certificate
2007-04-17
2007-04-17
Payne, David C. (Department: 2613)
Optical communications
Multiplex
Wavelength division or frequency division
C398S065000
Reexamination Certificate
active
10636735
ABSTRACT:
A polarization mode dispersion compensation apparatus using a photonic crystal structure includes an optical signal splitter for splitting and outputting incident optical signals into optical signals of a first and second polarization state; an optical signal combiner for combining and outputting the optical signals of the first and second polarization states; an optical signal guide having a photonic crystal structure having a first waveguide and a longer and variable second waveguide; a signal tab for externally outputting a portion of the optical signals and for outputting a portion of the optical signals to a feedback unit; a feedback unit for measuring a dispersion degree of the first and second polarization states inputted from the signal tab, and for outputting a feedback signal for removing the polarization mode dispersion; and an effective optical path length variation unit for varying an effective optical path length of the second waveguide.
REFERENCES:
patent: 5930414 (1999-07-01), Fishman et al.
patent: 6175671 (2001-01-01), Roberts
patent: 6493473 (2002-12-01), Wooten
patent: 2002/0021878 (2002-02-01), Allan et al.
patent: 2002/0075477 (2002-06-01), Yu et al.
patent: 0 964 237 (1999-12-01), None
patent: 11-196046 (1999-07-01), None
patent: 2000-131522 (2000-05-01), None
patent: 2001-021848 (2001-01-01), None
patent: 2002-131794 (2002-05-01), None
patent: 2002-196296 (2002-07-01), None
Winters et al “Experimenteal Equalization . . . ”, IEEE Photonics Tech. Letters, 2(8):591-593, (Aug. 1990).
Hakki, “Polarization Mode Dispersion . . . ” IEEE Photonics Tech. Letters, 9(1):121-123 (Jan. 1997).
Jiang, et al., “Silicon-based photonic crystal heterostructure”, Applied Physics Letters, vol. 79, No. 21, pp. 3395-3397 (Nov. 19, 2001).
Kim Ji-deog
Lee Hong-seok
Lee Suk-han
Moon Il-kwon
Lee & Morse P.C.
Payne David C.
LandOfFree
Polarization mode dispersion compensation apparatus using a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Polarization mode dispersion compensation apparatus using a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Polarization mode dispersion compensation apparatus using a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3796803