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Optical frequency stabilisation scheme for an OFDM network based on widely spaced optical crossconnects

: Kruger, U.; Kruger, K.; Helmolt, C.; Pawlowski, E.

	Interuniversity Micro-Electronics Center -IMEC-, Louvain: 21st European Conference on Optical Communication, ECOC '95. Proceedings. Vol.2: Regular papers & invited papers : Including Symposium on Photonic versus Electronic Technologies in Switching and Interconnection, Symposium on Broadband Networks for Video and Multimedia Services, ECOC 95 EEOC, Brussels, Belgium, 17 - 21 September 1995 Piscataway, NJ: IEEE, 1995 ISBN: 90-9008471-1 ISBN: 0-7803-2938-4 pp.697-700
	European Conference on Optical Communication (ECOC) <21, 1995, Brüssel> Symposium on Photonic versus Electronic Technologies in Switching and Interconnection <1995, Brüssel> Symposium on Broadband Networks for Video and Multimedia Services <1995, Brüssel> European Exhibition on Optical Communication (EEOC) <1, 1995, Brüssel>

	English
	Conference Paper
	Fraunhofer HHI ()
	absolute stability; frequency control; frequency division multiplexing; frequency stability; gradient index optics; lenses; optical filters; optical switches; optical transmitters; wavelength division multiplexing; optical frequency stabilisation; ofdm network; widely spaced optical crossconnects; transmitter; silica based optical frequency discriminator; absolute reference frequency; optical crossconnect demonstrator; race 2065; cobra; wdm networks; grin lens based filter

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. The described set-up is employed in an OFDM based optical crossconnect- demonstrator (RACE 2065; COBRA). An absolute stability of +or-1GHz was achieved.