Open AccessLow power and compact reconfigurable multiplexing devices based on silicon microring resonators
Author(s) -
Po Dong,
Wei Qian,
Hong Liang,
Roshanak Shafiiha,
NingNing Feng,
Dazeng Feng,
Xuezhe Zheng,
Ashok V. Krishnamoorthy,
Mehdi Asghari
Publication year - 2010
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.18.009852
Subject(s) - resonator , multiplexing , materials science , optics , free spectral range , silicon , crosstalk , optoelectronics , wavelength division multiplexing , thermal , optical ring resonators , wavelength , physics , electronic engineering , engineering , meteorology
We present thermally reconfigurable multiplexing devices based on silicon microring resonators with low tuning power and low thermal crosstalk. Micro-heaters on top of the rings are employed to tune the resonant wavelengths through the thermo-optic effect of silicon. We achieve a low tuning power of 21 mW per free spectral range for a single ring by exploiting thermal isolation trenches close to the ring waveguides. Negligible thermal crosstalk is demonstrated for rings spaced by 15 microm, enabling compact multiplexing devices. The tuning time constant is demonstrated to be less than 10 micros.