Title :
Decentralized frequency stabilization scheme for a dense OFDM system involving simple filters and an absolute reference
Author :
Kruger, Uwe ; Kruger, Kleber ; von Helmolt, C. ; Pawlowski, E. ; Depovere, G.F.G. ; Witlox, R.G.J.J. ; van Gils, R.A.J.C.M.
Author_Institution :
Heinrich-Hertz-Inst., Berlin, Germany
fDate :
5/1/1996 12:00:00 AM
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 ±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)
Keywords :
Michelson interferometers; absolute stability; frequency control; frequency division multiplexing; gradient index optics; lenses; optical couplers; optical fibre networks; optical films; optical filters; optical transmitters; COBRA; GRIN lenses; OFDM based optical crossconnect-demonstrator; RACE 2065; absolute reference; absolute reference frequency; absolute stability; coated gradient-index lenses; coupler-based Michelson interferometers; decentralized frequency stabilization scheme; dense OFDM system; frequency control scheme; frequency-determining elements; silica based optical frequency discriminator; simple optical filters; transmitter frequency referencing; Interferometers; OFDM; Optical filters; Optical interferometry; Optical network units; Optical receivers; Optical transmitters; Optical variables control; Silicon compounds; Temperature control;
Journal_Title :
Lightwave Technology, Journal of
