Chin. Phys. Lett.  2011, Vol. 28 Issue (11): 114207    DOI: 10.1088/0256-307X/28/11/114207
An InP-Based Dual-Depletion-Region Electroabsorption Modulator with Low Capacitance and Predicted High Bandwidth
SHAO Yong-Bo1**, ZHAO Ling-Juan1, YU Hong-Yan1,2, QIU Ji-Fang1, QIU Ying-Ping1, PAN Jiao-Qing1, WANG Bao-Jun1, ZHU Hong-Liang1, WANG Wei1
1Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, P.O. Box 912, Beijing 100083
2School of Space Science and Physics, Shandong University at Weihai, Weihai 264209
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SHAO Yong-Bo, ZHAO Ling-Juan, YU Hong-Yan et al  2011 Chin. Phys. Lett. 28 114207
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Abstract A novel dual-depletion-region electroabsorption modulator (DDR-EAM) based on InP at 1550 nm is fabricated. The measured capacitance and extinction ratio of the DDR-EAM reveal that the dual depletion region structure can reduce the device capacitance significantly without any degradation of extinction ratio. Moreover, the bandwidth of the DDR-EAM predicted by using an equivalent circuit model is larger than twice the bandwidth of the conventional lumped-electrode EAM (L-EAM).
Keywords: 42.79.Hp      81.07.St      84.37.+q     
Received: 12 April 2011      Published: 30 October 2011
PACS:  42.79.Hp (Optical processors, correlators, and modulators)  
  81.07.St (Quantum wells)  
  84.37.+q (Measurements in electric variables (including voltage, current, resistance, capacitance, inductance, impedance, and admittance, etc.))  
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SHAO Yong-Bo
ZHAO Ling-Juan
YU Hong-Yan
QIU Ji-Fang
QIU Ying-Ping
PAN Jiao-Qing
WANG Bao-Jun
ZHU Hong-Liang
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