Wide-range and fast thermally-tunable silicon photonic microring resonators using the junction field effect

Tunable silicon microring resonators with small, integrated micro-heaters which exhibit a junction field effect were made using a conventional silicon-on-insulator (SOI) photonic foundry fabrication process. The design of the resistive tuning section in the microrings included a "pinched"...

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Bibliographic Details
Published in:Optics express 2016-10, Vol.24 (20), p.23081-23093
Main Authors: Wang, Xiaoxi, Lentine, Anthony, DeRose, Christopher, Starbuck, Andrew L, Trotter, Douglas, Pomerene, Andrew, Mookherjea, Shayan
Format: Article
Language:English
Subjects:
Coupled resonators
Integrated optics devices
OTHER INSTRUMENTATION
Wavelength filtering devices
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Summary:Tunable silicon microring resonators with small, integrated micro-heaters which exhibit a junction field effect were made using a conventional silicon-on-insulator (SOI) photonic foundry fabrication process. The design of the resistive tuning section in the microrings included a "pinched" p-n junction, which limited the current at higher voltages and inhibited damage even when driven by a pre-emphasized voltage waveform. Dual-ring filters were studied for both large (>4.9 THz) and small (850 GHz) free-spectral ranges. Thermal red-shifting was demonstrated with microsecond-scale time constants, e.g., a dual-ring filter was tuned over 25 nm in 0.6 μs 10%-90% transition time, and with efficiency of 3.2 μW/GHz.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.24.023081