Low power autocorrelation technique based on the degree-of-polarization measurement |
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| Authors: | Junhao Hu Changyuan Yu |
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| Institution: | 1. Department of Electrical and Computer Engineering, National University of Singapore, Singapore 117576;2. Institute for Infocomm Research, (A*STAR) Agency for Science, Technology and Research, Singapore 138632;1. Department of Electrical and Electronic Engineering, Niigata University, 8050 Ikarashi-2, Niigata, Japan;2. Graduate School of Engineering, Niigata University, 8050 Ikarashi-2, Niigata, Japan;1. School of Mathematics & Physics Science and Engineering, Anhui University of Technology, Ma''anshan 243032, China;2. Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei 230031, China;3. Department of Automation, University of Science & Technology of China, Hefei 230027, China;1. Malaysia Japan International Institute of Technology, University Technology Malaysia International Campus, 54100, Kuala Lumpur, Malaysia;2. Department of Materials, Imperial College London, London, United Kingdom. SW7 2AZ;1. Information Engineering College, Jiangxi University of Technology, Nanchang 330098, China;2. Center for Quantum Science and Technology, Jiangxi Normal University, Nanchang 330022, China;3. College of Electrical and Optoelectronic Engineering, Changzhou Institute of Technology, Changzhou 213002, China |
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| Abstract: | Based on the degree-of-polarization (DOP) measurement, an autocorrelation technique to measure the pulse width of chirp-free optical short pulse with a very low optical power (<?60 dBm) is demonstrated. The impacts of chirp and misalignment of the input light are also discussed in detail. The pulse width measurement results are consistent with the conventional second-harmonic generation (SHG) autocorrelation, while our autocorrelation technique does not require high input power or rigid optical alignment. |
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