Performance limitations of a Y-branch directional-coupler-based polymeric high-speed electro-optical modulator

Qingjun Zhou; Jianyi Yang; Zhong Shi; Yongqiang Jiang; Brie Howley; Ray T. Chen

doi:10.1117/1.1666865

1 April 2004 Performance limitations of a Y-branch directional-coupler-based polymeric high-speed electro-optical modulator

Qingjun Zhou, Jianyi Yang, Zhong Shi, Yongqiang Jiang, Brie Howley, Ray T. Chen

Author Affiliations +

Optical Engineering, Vol. 43, Issue 4, (April 2004). https://doi.org/10.1117/1.1666865

Abstract

To find the optimal driving voltage and bandwidth for electro-optic polymer-waveguide-based directional couplers, four electrode structures are investigated. They are the microstrip line (MSL), the asymmetric coplanar waveguide with ground (ACWG), the coplanar waveguide with ground (CPWG), and the edge-coupled microstrip line (CMSL). UV15:Polymethyl methacrylate/dispersed-red 1:UV11-3-based directional couplers are evaluated. The CPWG and the ACWG have almost the same driving voltages, which are about twice the driving voltage of the CMSL. The MSL has the largest driving voltage, which is 20 to 25% higher than the diving voltages of the CPWG and ACWG. Simulation results further conclude that the MSL has the largest bandwidth, and its bandwidth is about 1.6 times that of the bandwidth of the CMSL, which has the narrowest bandwidth. The bandwidths of the ACWG and CPWG are 1.4 and 1.2 times that of the CMSL, respectively. The driving voltages for the four different devices are experimentally confirmed.

©(2004) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Qingjun Zhou, Jianyi Yang, Zhong Shi, Yongqiang Jiang, Brie Howley, and Ray T. Chen "Performance limitations of a Y-branch directional-coupler-based polymeric high-speed electro-optical modulator," Optical Engineering 43(4), (1 April 2004). https://doi.org/10.1117/1.1666865

Published: 1 April 2004

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