Optical bit stream reader system

Details Optical bit stream reader system Optical bit stream reader system

2007-06-19

2007-06-19

Sedighian, M. R. (Department: 2613)

Optical communications

Diagnostic testing

Determination of communication parameter

C398S013000, C398S028000, C398S151000, C385S122000, C385S141000

Reexamination Certificate

active

10277949

ABSTRACT:
An all optical fiber bit stream reader system for examining the data contents of an optical fiber involving the conversion of a temporal timing signal into a spatially located signal is provided. The invention generally comprises generating and detecting a signal indicating the presence of data, in a manner which is minimally destructive to the data.One embodiment comprises providing a piece of optical fiber that exhibits a nonlinear response through a two photon absorption process and subsequent emission of a photon corresponding to the two photon absorption process. Such a fiber could comprise a conventional doped silica fiber into which an additional dopant has been introduced.Another embodiment involves modifying the index of refraction of the cladding of the optical fiber line. This causes a fraction of the electric field or light pulse guided through the fiber (if present) to be coupled out of the fiber. Thereafter, the pulse can be detected.The optical bit steam reader can be used for important problems in optical communications such as switching, test-and-measurement, system housekeeping, data sampling, and fiber tapping for optical communications.

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