Open AccessA high-speed, tunable silicon photonic ring modulator integrated with ultra-efficient active wavelength control
Author(s) -
Xuezhe Zheng,
Eric Y. Chang,
Philip Amberg,
Ivan Shubin,
Jon Lexau,
Frankie Liu,
Hiren Thacker,
Stevan S. Djordjevic,
Shiwei Lin,
Ying Luo,
Jin Yao,
Jinhyoung Lee,
Kannan Raj,
Ron Ho,
J. E. Cunningham,
Ashok V. Krishnamoorthy
Publication year - 2014
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.22.012628
Subject(s) - materials science , photonics , optics , optoelectronics , photonic integrated circuit , tuner , cmos , modulation (music) , wavelength , silicon photonics , signal (programming language) , computer science , physics , radio frequency , telecommunications , acoustics , programming language
We report the first complete 10G silicon photonic ring modulator with integrated ultra-efficient CMOS driver and closed-loop wavelength control. A selective substrate removal technique was used to improve the ring tuning efficiency. Limited by the thermal tuner driver output power, a maximum open-loop tuning range of about 4.5nm was measured with about 14mW of total tuning power including the heater driver circuit power consumption. Stable wavelength locking was achieved with a low-power mixed-signal closed-loop wavelength controller. An active wavelength tracking range of > 500GHz was demonstrated with controller energy cost of only 20fJ/bit.