Time division multiplexing of 106 weak fiber Bragg gratings using a ring cavity configuration

Abstract

A time division multiplexing of 106 weak fibers Bragg gratings (FBGs) based on a ring resonant-cavity is demonstrated. A semiconductor optical amplifier is connected in the cavity to function as an amplifier as well as a switch. The 106 weak FBGs are written along a SMF-28 fiber in serial with peak reflectivity of about −30 dB and equal separations of 5 m. The crosstalk and spectral distortion are investigated through both theoretical analysis and experiments.

Keywords

Fiber Bragg grating (FBG) / semiconductor optical amplifier (SOA) / time-division multiplexing (TDM)

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