Theoretical analysis and realization of optoelectrical predistortion optical transmitter for the simultaneous suppression of IM3 and IM5 signal |
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| Authors: | Tae-Kyeong Lee Yon-Tae Moon Hong-Seung Kim Young-Wan Choi |
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| Institution: | 1. Electrical Engineering Department, K.N. Toosi University of Technology, Tehran 1969764499, Iran;2. Electrical Engineering Department, University of Shahrood, Shahrood 3619995161, Iran;1. Université de Lyon, F-42023 Saint Etienne, France;2. Université de Saint Etienne, Jean Monnet, F-42023 Saint Etienne, France;3. LT2C, F-42023 Saint Etienne, France;4. Laboratoire Ampère INSA-Lyon, 20 avenue Einstein, 69621 Villeurbanne Cedex, France;1. Key Laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Dingxi Road, Shanghai 200050, People''s Republic of China;2. University of the Chinese Academy of Sciences, Beijing 100049, People''s Republic of China;1. Physics Department, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan;2. Physics Department, Hashemite University, P.O. Box 150459, Zarqa 13115, Jordan;3. Department of Chemical Engineering, Jordan University of Science and Technology, P.O. Box 3030, Irbid 22110, Jordan;1. School of Energy and Power Engineering, Beihang University, Beijing, China;2. Collaborative Innovation Center for Advanced Aero-Engine, Beijing, China;3. Laboratoire de Tribologie et Dynamique des Systèmes (LTDS), UMR 5513, Ecole Centrale de Lyon, Ecully, France;1. College of Materials Science and Engineering, Hunan University, Changsha, 410082, China;2. Hunan Province Key Laboratory for Spray Deposition Technology and Application, Hunan University, Changsha, 410082, China |
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| Abstract: | We present an opto-electrical predistortion optical transmitter showing significant reductions in both 3rd-order and 5th-order intermodulations (IM3 and IM5). The simultaneous reductions of IM3 and IM5 are achieved by choosing an appropriate bias current and RF input power for the LD, obtained by the analysis of the 3rd-order to 5th-order intermodulation distortion ratio (TFR). In our experiments, two DFB-LDs (master and slave LDs) with a similar performance are used; the matching circuits of the two LDs are designed to have equal properties. The experimental results show that reductions of 30 dB in the IM3 and 12 dB in the IM5 are achieved simultaneously under the optimum TFR conditions of a 12 mA bias current and a 0 dBm RF power at 2.2 GHz. |
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