As the link capacity increases dramatically, it is also becoming more and more important to develop smart photonic networks-on-chip so that the bandwidth/channels can be utilized optimally and flexibly. One of the keys for realizing smart (reconfigurable) photonic networks is reconfigurable photonic integrated devices and circuits. As silicon has a large thermo-optic (TO) coefficient as well as a high heat conductivity, it is promising to realize efficient thermallyreconfigurable silicon photonic integrated devices and circuits with simple fabrication processes. This paper gives a review of our recent work on reconfigurable photonic integrated devices and circuits on silicon, including: (1) tunable microring-resonator (MRR)-based optical filters; (2) ultra-broadband optical switches; (3) monolithically-integrated reconfigurable optical add-drop multiplexers (ROADMs) for wavelength-division-multiplexing (WDM), mode-divisionmultiplexing (MDM), as well as hybrid WDM-MDM systems.
Daoxin Dai, Haifeng Shan, Lijia Song, and Shipeng Wang, "Reconfigurable silicon photonics: devices and circuits," Proc. SPIE 10242, Integrated Optics: Physics and Simulations III, 1024207 (Presented at SPIE Optics + Optoelectronics: April 24, 2017; Published: 17 May 2017); https://doi.org/10.1117/12.2265209.
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