Optical fiber system

Details Optical fiber system Optical fiber system

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.

REFERENCES:
patent: 3792436 (1974-02-01), DeVoy et al.
patent: 4677618 (1987-06-01), Haas et al.
patent: 4829596 (1989-05-01), Barina
patent: 4905218 (1990-02-01), Takeuchi et al.
IBM Technical Disclosure Bulletin, vol. 10, No. 1, Jun. 1967, Giudi, A. M., pp. 37-39.
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.

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