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Single-chip optical beam forming network in LPCVD waveguide technology based on optical ring resonators

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6 Author(s)
L. Zhuang ; University of Twente, Faculty of Electrical Engineering, Mathematics and Computer Science, Telecommunication Engineering group, PO Box 217, 7500 AE, Enschede, The Netherlands ; C. G. H. Roeloffzen ; R. G. Heideman ; A. Borreman
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Optical ring resonators (ORRs) can be used as continuously tunable delay elements in a beam forming network for a phased-array antenna system. The bandwidth of such delay elements can be enhanced by cascading multiple ORRs. When delays and splitting/combining circuitry are integrated in one optical circuit, an optical beam forming network (OBFN) is obtained. In this paper, the principles of optical beam forming using ORRs are explained and demonstrated, by presenting measurements on a 1times4 OBFN chip, realized in LPCVD waveguide technology. To our knowledge, this is the first single-chip demonstration of continuous optical beam forming

Published in:

2006 International Topical Meeting on Microwave Photonics

Date of Conference:

Oct. 2006