Fourier analysis of a polymer directional coupler electro-optic switch with two-section cosine-transitive CPWG electrodes: A new theoretical view |
| |
| Authors: | Rui Wang Chuan-Tao Zheng Qiang Song Lei Liang Chun-Sheng Ma Zhan-Chen Cui Da-Ming Zhang |
| |
| Institution: | 1. State Key Laboratory on Integrated Optoelectronics, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China;2. State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China;1. Institute of Lightwave Technology, Key Lab of All Optical Network and Advanced Telecommunication of EMC, Beijing Jiaotong University, Beijing, China;2. Safety Engineering Department, Beijing Vocational College of Labor and Social Security, Beijing, China;1. Department of Physics, Faculty of Science, University of Guilan, Namjoo Avenue, P.O. Box 413351914, Rasht, Iran;2. Department of Physics, Faculty of Science, Islamic Azad University, Lahijan Branch, P.O. Box 1616, Lahijan, Iran;3. IESL/FORTH and Department of Physics, University of Crete, 7110 Heraklion, Crete, Greece;1. Photonic Communications Research Laboratory, National Technical University of Athens, GR15773, Greece;2. LioniX B.V., Enschede 2083, Netherlands |
| |
| Abstract: | By using two-section cosine-transitive coplanar waveguide grounded (CPWG) electrodes, a polymer directional coupler (DC) electro-optic (EO) switch is optimally designed with both relaxed fabrication tolerance under cross-state and high switching speed over 100 GHz. As a new theoretical view, based on Fourier transformation, a Fourier analysis technique and related formulas are presented with respect to the time- and frequency-domain responses under high-speed modulating and switching operations. Under 1550 nm, the bar- and cross-state voltages are 0 and 2.669 V, respectively, for the switch with a total length of 8378 μm. The insertion loss and crosstalk are less than 3.887 and ? 30 dB, respectively. The 3-dB modulating bandwidth and cutoff switching frequency are about 110 and 131.6 GHz, respectively, and the 10–90% rise time and fall time are both about 3.80 ps. Owning to this configuration, its cutoff switching frequency is enhanced to 9 times of that of our previously reported EO switch with two-section separated reversed electrodes, which expands the ultra-high speed and large capacity applications for such switches. The proposed Fourier analysis method can also be adopted to evaluate the responses under the operation of any other form driving signals with Fourier transformation. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
