Multiwavelength-Integrated Optical Beamformer Based on Wavelength Division Multiplexing for 2-D Phased Array Antennas
| Autor: | Leimeng Zhuang, Rene Heideman, Chris G. H. Roeloffzen, David Marpaung, M. R. H. Khan, Maurizio Burla, Marcel Hoekman, Arne Leinse, Willem P. Beeker |
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| Rok vydání: | 2014 |
| Předmět: |
Computer science
Phased array Optical cross-connect Optical ring resonators Data_CODINGANDINFORMATIONTHEORY Optical performance monitoring Waveguide (optics) Optical switch Atomic and Molecular Physics and Optics law.invention Optical delay lines law Microwave photonics Phased arrays Electronic engineering Resonators Tunable delay Optical beamforming Optical add-drop multiplexer Computer Science::Information Theory Optical communications repeater |
| Zdroj: | Journal of lightwave technology, 32(20), 3509-3520. IEEE |
| ISSN: | 1558-2213 0733-8724 |
| DOI: | 10.1109/jlt.2014.2332426 |
| Popis: | A novel, hardware-compressive architecture for broadband and continuously tunable integrated optical truetime- delay beamformers for phased array antennas is proposed and experimentally demonstrated. The novel idea consists in employing the frequency-periodic response of optical ring resonator (ORR) filters in conjunction with on-chip wavelength division multiplexing (WDM), in order to create multiple signal paths on an individual beamformer channel. This novel idea dramatically reduces the network complexity and, in turn, its footprint on the wafer. This allows the integration of an unprecedented number of delay channels on a single chip, ultimately overcoming the main limitation of integrated optical beamformers, that is, the difficulty to feed antenna arrays with many elements using a single integrated chip. A novel beamformer has been realized based on this technique, using the ultra-low-loss TriPleXTM waveguide platform with CMOScompatible fabrication equipment, and its functionality is demonstrated over an instantaneous bandwidth from 2 to 10 GHz. This result, at the best of our knowledge, represents at the same time the record instantaneous bandwidth (8 GHz) for an optical beamformer based on optical ring resonators (ORR), and the first demonstration of an integrated beamformer where the periodic response of ORRs is exploited to process signals from different antenna elements, simultaneously, using a single delay line. |
| Databáze: | OpenAIRE |
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