Optical: systems and elements – Deflection using a moving element – Using a periodically moving element
Patent
1997-08-27
2000-08-29
Negash, Kinfe-Michael
Optical: systems and elements
Deflection using a moving element
Using a periodically moving element
359114, 359110, H04J 1402
Patent
active
061116750
ABSTRACT:
A bi-directional telemetry service channel is provided on a single optical fiber using two wavelengths that are accessible through multiplexing devices. A bi-directional telemetry service channel is also provided on a single optical fiber using only a single wavelength. A fully protected bi-directional telemetry service channel can be provided using only two optical fibers. When a single wavelength is used, a time window is provided for transmission of telemetry service signals in one direction on the optical fiber at the single wavelength, and a second time-window is provided for transmission of telemetry service signals in the opposite direction on the same optical fiber using the same wavelength.
REFERENCES:
patent: 5113459 (1992-05-01), Grasso et al.
"High Capacity Optical Transmission Explained," Edited by D.M. Spirit and M.J. O'Mahony, 1995, pp. 22-24 and pp. 228-239.
Keong, "Optical Fiber System for Video and Telemetry Signal Transmission", Proceedings of IEEE Singapore Internationsl Conference on Networks/International Conference on Information Engineering '93, vol. 1, pp. 71-75, Sep. 1993.
Mao Xiaoping
Wellbrock Glenn
Wispell, II Harold Clay
MCIWorldCom, Inc.
Negash Kinfe-Michael
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