Integrated Wavelength-Tuned Optical mm-Wave Beamformer With Doubled Delay Resolution
| Autor: | A.M.J. Koonen, Xuebing Zhang, Yuqing Jiao, Mingyang Zhao, Zizheng Cao |
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| Přispěvatelé: | Eindhoven Hendrik Casimir institute, Electro-Optical Communication, Photonic Integration, Optical Access and Indoor Networks |
| Rok vydání: | 2020 |
| Předmět: |
Router
Physics looped-back AWG integrated photonics optical mm-wave beamformer business.industry Beam steering Phase (waves) Physics::Optics Indoor fiber-wireless communications 02 engineering and technology wavelength-tuned True time delay Atomic and Molecular Physics and Optics Arrayed waveguide grating law.invention 020210 optoelectronics & photonics Modulation law Broadband 0202 electrical engineering electronic engineering information engineering Electronic engineering Photonics business |
| Zdroj: | Journal of Lightwave Technology, 38(8):8985297, 2353-2359. IEEE/LEOS |
| ISSN: | 1558-2213 0733-8724 |
| Popis: | Integrated optical true time delay lines attract lots of attention for optically controlled mm-wave beam steering due to its low-loss/broadband performance and stable/compact system architecture. However, for remotely-controlled networks, the techniques that require local-site actively-tuned elements would make the network control more complicated. A passive design using wavelength-tuning is regarded as a promising candidate. In this paper, an integrated wavelength-tuned optical mm-wave beamformer with doubled delay resolution is proposed and demonstrated in a generic InP platform. A bidirectional looped-back arrayed waveguide grating (AWG) module acts as the stepwise tunable delay unit. By introducing an extra AWG router for delay mode (positive/negative) selection and a bidirectional optical interface, a pure λ-tuned, resolution-doubled optical delay network is realized without using any active component (e.g. heaters, current injection) at the local site. This photonic passive design is more beneficial to the remotely-controlled mm-wave beam steering system. Furthermore, the AWG router potentially allows multi-port wavelength switching to support the scaling-up of the network. The fabrication-caused delay error of |
| Databáze: | OpenAIRE |
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