DocumentCode
9512
Title
Broadband 4 
4 Nonblocking Silicon Electrooptic Switches Based on Mach–Zehnder Interferometers
Author
Liangjun Lu ; Linjie Zhou ; Zuxiang Li ; Xinwan Li ; Jianping Chen
Author_Institution
Dept. of Electron. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Volume
7
Issue
1
fYear
2015
fDate
Feb. 2015
Firstpage
1
Lastpage
8
Abstract
We report a broadband 4 × 4 nonblocking optical switch with Mach-Zehnder interferometers (MZIs) as switch elements on a silicon platform. Silicon resistive heaters are used for phase error correction of MZI arms with total thermooptic power consumption of 33.7 mW. Fast switching is enabled by p-i-n diodes, with average electrooptic tuning power of 14.3 mW for the 24 essential switching states as required for nonblocking routing. The average on-chip insertion loss is 5.8-7.7 dB and crosstalk better than -12 dB at wavelength of 1550 nm. Optical transmission experiments using a high-throughput 50 Gb/s quadrature phase-shift keying (QPSK) optical signal reveal that no significant deterioration is observed on constellation diagrams.
Keywords
Mach-Zehnder interferometers; electro-optical switches; elemental semiconductors; integrated optics; integrated optoelectronics; optical communication equipment; optical crosstalk; optical losses; p-i-n photodiodes; quadrature phase shift keying; silicon; telecommunication network routing; thermo-optical devices; MZI; Mach-Zehnder interferometers; QPSK; Si; broadband nonblocking silicon electrooptic switches; constellation diagrams; loss 5.8 dB to 7.7 dB; nonblocking routing; on-chip insertion loss; optical crosstalk; optical transmission; p-i-n diodes; phase error correction; power 14.3 mW; power 33.7 mW; quadrature phase-shift keying; silicon resistive heaters; total thermooptic power consumption; wavelength 1550 nm; Adaptive optics; Crosstalk; Optical switches; Optical waveguides; Silicon; Tuning; Silicon nanophotonics; integrated nanophotonic systems; optical interconnects;
fLanguage
English
Journal_Title
Photonics Journal, IEEE
Publisher
ieee
ISSN
1943-0655
Type
jour
DOI
10.1109/JPHOT.2015.2390195
Filename
7004851
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