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3. Decentralized frequency stabilization scheme for a dense OFDM system involving simple filters and an absolute reference

Author

U. Kruger, R.A.J.C.M. van Gils, G. Depovere, K. Kruger, E. Pawlowski, C. von Helmolt, R.G.J.J. Witlox, and Publica

Subjects
Discriminator, absolute reference, optical films, grin lenses, Orthogonal frequency-division multiplexing, gradient index optics, Automatic frequency control, Optical communication, simple optical filters, absolute stability, coupler-based michelson interferometers, optical transmitters, frequency division multiplexing, Frequency-division multiplexing, lenses, frequency control, Optics, optical couplers, dense ofdm system, frequency control scheme, michelson interferometers, Electronic engineering, Astronomical interferometer, silica based optical frequency discriminator, ofdm based optical crossconnect-demonstrator, optical filters, Optical filter, optical fibre networks, Mathematics, coated gradient-index lenses, business.industry, Transmitter, frequency-determining elements, cobra, transmitter frequency referencing, Atomic and Molecular Physics, and Optics, absolute reference frequency, decentralized frequency stabilization scheme, race 2065, business
Abstract

A frequency control scheme is introduced where within each transmitter its frequency is referenced to a silica based optical frequency discriminator, which in addition is locked to an absolute reference frequency. An absolute stability of /spl plusmn/1 GHz was achieved. As frequency-determining elements, coupler-based Michelson interferometers or coated gradient-index (GRIN) lenses were used. The described set-up is employed in an OFDM based optical crossconnect-demonstrator (RACE 2065; COBRA).

Published
1996
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