Open AccessWide-range and fast thermally-tunable silicon photonic microring resonators using the junction field effect
Author(s) -
Xiaoxi Wang,
Anthony L. Lentine,
Christopher T. DeRose,
Andrew Starbuck,
Douglas C. Trotter,
Andrew Pomerene,
Shayan Mookherjea
Publication year - 2016
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.24.023081
Subject(s) - materials science , resonator , silicon on insulator , optoelectronics , silicon , optics , photonics , free spectral range , photonic integrated circuit , optical ring resonators , silicon photonics , physics
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.