A novel method for chromatic-dispersion monitoring |
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| Authors: | Lijun Li Ge Fan |
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| Institution: | 1. Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 120-749, South Korea;2. Solar Cell Research Group, Korea Institute of Industrial Technology, Gwangju 500-480, South Korea;1. Institute of Applied Physics, University of Hamburg, 20355 Hamburg, Germany;2. National Center for Materials Study and Testing, Technical University of Moldova, 2004 Chisinau, Republic of Moldova;3. Institute of Solid State Physics, University of Bremen, 28334 Bremen, Germany |
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| Abstract: | A novel method for chromatic-dispersion monitoring based on PM–AM conversion is presented. A nonlinear element (NLE) was used as phase-modulator to improve the monitoring performance. The method was investigated numerically and experimentally for 40-Gbit/s signals in NRZ/RZ and CSRZ formats. The monitoring range was enlarged to 1670 ps/nm, and the monitoring sensitivity was improved to 0.012 dB/(ps/nm) for the NRZ signal. The corresponding values for the RZ50 signal were 680 ps/nm and 0.0046 dB/(ps/nm), respectively, and, for the CSRZ signal, 620 ps/nm and 0.0092 dB/(ps/nm), respectively. |
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