Electro-optic directed logic circuit based on microring resonators for XOR/XNOR operations.
We report the implementation of the XOR and XNOR operations using an electro-optic directed logic circuit based on two cascaded silicon microring resonators (MRRs), which are both modulated through the plasma dispersion effect. PIN diodes are embedded around the MRRs to achieve the carrier-injection modulation. The inherent resonance wavelength mismatch between the two nominally identical MRRs caused by fabrication errors is compensated by two local microheaters above each MRR through the thermo-optic effect. Two electrical modulating signals applied to the MRRs represent the two operands of the two operations. Simultaneous bitwise XOR and XNOR operations at 100 Mbit/s are demonstrated.
State Key Laboratory on Integrated Optoelectronics and Optoelectronic System Laboratory, Institute of Semiconductors, Chinese Academy of Sciences, PO Box 912, Beijing 100083, China.
Lei
L
Zhang
Jianfeng
J
Ding
Yonghui
Y
Tian
Ruiqiang
R
Ji
Lin
L
Yang
Hongtao
H
Chen
Ping
P
Zhou
Yangyang
Y
Lu
Weiwei
W
Zhu
Rui
R
Min
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007909:Lenses; D008904:Miniaturization; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D020349:Surface Plasmon Resonance / Q000295:instrumentation*; D014159:Transducers