Performance influence of carrier absorption to the Mach-Zehnder-interference based silicon optical switches.
The free carrier absorption effect in silicon modulation is a detrimental behavior that can influence the crosstalk of interference-based optical switches. Based on the experimental analysis of a 2x2 p-i-n silicon switch, we give a conservative estimate of the crosstalk ability of Mach-Zehnder optical switches. Experimental result shows that, while using a 1475 microm-long phase shifter, the loss penalty almost reaches 1.45 dB/pi, which deteriorates the most ideal crosstalk to just 30 dB. The possible solutions to overcome this limitation are also discussed at the cost of the other device performance.
Zhou
Haifeng
H
Department of Information Science and Electronics Engineering, Zhejiang University, Hangzhou, 310027, China. hfzhou1984@gmail.com
Zhao
Yong
Y
Wang
Wanjun
W
Yang
Jianyi
J
Wang
Minghua
M
Jiang
Xiaoqing
X
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D007368:Interferometry / Q000295:instrumentation*; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D012825:Silicon / Q000737:chemistry*; D013685:Telecommunications / Q000295:instrumentation*
D012825:Silicon