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Independent group delay and amplitude manipulation based on a micro-ring resonator for optical microwave beam-steering

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  • Communication
  • Design
  • Mathematics
  • Physics


Microsoft Word - Benelux2012_v2.2.docx Independent Group Delay and Amplitude Manipulation Based on Micro-Ring Resonator for Optical Microwave Beam-Steering Z. Cao, Y. Jiao, H.P.A. van den Boom, A. Rohit, E. Tangdiongga, S. Zou and A.M.J. Koonen COBRA Institute, Eindhoven University of Technology, NL 5600 MB Eindhoven, The Netherlands [email protected] Abstract: Optical microwave beam-steering (OMBS) is of interest for broadband wireless communication and phased array radar. Traditionally the optical all-pass filter (OAPF) based on micro-ring resonator (MRR) can only be used to manipulate group delay. Moreover, the requirement of lossless condition of the OAPF limits its potential of monolithic integration on InP platform. To overcome this limitation and also to provide freedom for amplitude manipulation, a novel loss-control MRR is proposed for both group delay and amplitude manipulation. A mathematical model is built up for analysis and then a simulation is carried out to study the proposed design. I Introduction Optical microwave beam-steering (OMBS) is of interest for the broadband phase antenna array due to its wide bandwidth, low loss and immunity to electromagnetic interference. In previous research, the most efforts are made for military application like broadband phase array radar. Recently, the utilization of OMBS for broadband fibre wireless communication attracts lots of interests. The key enable technique is the suitable optical delay unit (ODU). The micro-ring resonator (MRR) based ODU are gaining high interests in terms of integration capability, design flexibility and small footprint [1-3]. MRRs require no cleaved facets or grating couplers to realize optical feedback and are therefore particularly suited for monolithic integration with other components. These applications of MRRs are based on the concept of the optical all-pass filter (OAPF). Traditionally the optical all-pass filter (OAPF) based on micro-ring resonator (MRR) can only be use

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