Title :
4 × 4 Nonblocking Silicon Thermo-Optic Switches Based on Multimode Interferometers
Author :
Liangjun Lu ; Linjie Zhou ; Shulin Li ; Zuxiang Li ; Xinwan Li ; Jianping Chen
Author_Institution :
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
We experimentally demonstrate a silicon 4 × 4 nonblocking thermo-optic (TO) switch using a generalized Mach-Zehnder interferometer constructed on multimode interferometers. All the 24 switching states for nonblocking switching are characterized. The device fabricated using CMOS technologies has a footprint of 2.8 × 0.65 mm2. The measured average on-chip insertion loss is 9 ± 2 dB and the crosstalk for all switching states is better than -12 dB. The average TO switching power consumption is 109 mW. The switching functionality is verified by transmission of a 40-Gb/s quadrature phase-shift keying optical signal.
Keywords :
Mach-Zehnder interferometers; integrated optics; optical switches; silicon; thermo-optical devices; CMOS technologies; Si; average TO switching power consumption; average on-chip insertion loss; generalized Mach-Zehnder interferometer; multimode interferometers; nonblocking silicon thermo-optic switches; quadrature phase-shift keying optical signal; switching functionality; switching states; Crosstalk; Optical attenuators; Optical crosstalk; Optical fibers; Optical switches; Integrated optics; integrated optics; optical interconnections; optical switches;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2014.2376933
