Automatic Tuning of Silicon Photonics Microring Filter Array for Hitless Reconfigurable Add–Drop
Advanced Photonics 2018 (BGPP, IPR, NP, NOMA, Sensors, Networks, SPPCom, SOF)(2018)
摘要
Given the escalation of demand for high-speed data interconnection, both between users and datacenters, high-capacity optical networks need a boost in capacity, flexibility, and efficiency. To stand up for those problems, the network reconfigurability is a key feature in a saturated and power hungry network operating scenario. In this paper, a reconfigurable optical node, using a commercial integrated photonics foundry, was conceived, fabricated, and tested. A novel application of automatic control of complex optical circuits involving locking and tuning of microring resonators is presented. The technique exploits a channel labeling strategy to identify a single optical channel amid a dense wavelength division multiplexing comb. The fabricated filter array provided add-drop ports with hitless channel reconfiguration and telecom graded specifications as 20 dB of in-band isolation, 40 GHz of channel bandwidth in a microring filter with 1 THz of free spectral range.
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关键词
Hitless filters,optical add drop,photonic integrated circuits,ring resonators,silicon photonics
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