Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1990-01-18
1992-10-20
Coles, Sr., Edward L.
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
371 1, H04J 1402, G06K 504
Patent
active
051575302
ABSTRACT:
Described are a technique and an apparatus for deskewing data transmitted via a dispersive medium such as a fiber optic link. The relative delays in arrival time for a plurality of bits, propagated in separate channels are measured. The relative delays are used to calculate the wavelength (.lambda.) of one channel and the zero dispersion wavelength (.lambda..sub.0) of the medium. The relative delays in arrival times for the remaining bits in a group of bits are predicted using the measured relative delays, the spacing (.delta.) between the transmitters and the calculated wavelengths. An adjustable delay for storing data bits is provided in each channel. The relative delays are used to deskew the individual bits.
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L. B. Jeunhomme, `Single Mode Fiber Optics, Principles & Applications` 1983, pp. 112-114.
Journal of Lightwave Technology, vol. 8, No. 2, Feb. 1990, pp. 239-242.
Loeb Mitchell L.
Stilwell, Jr. George R.
Cockburn Joscelyn G.
Coles Sr. Edward L.
International Business Machines - Corporation
Negash Kinfe-Michael
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