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Clock recovery from 40 Gbps optical signal with optical phase-locked loop based on a terahertz optical asymmetric demultiplexer |
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| Authors: | Young Min Jhon Ho Jin Ki Sun Ho Kim |
| Institution: | a Photonics Research Center, Korea Institute of Science and Technology, 39-1 Hawolgok, Seongbuk, Seoul 136-791, South Korea b Active Optical Network Team, Electronics and Telecommunications Research Institute, 161 Gajeong, Yuseong, Daejeon 305-350, South Korea |
| Abstract: | 10 GHz clock recovery from 40 Gbps optical time-division-multiplexed (OTDM) signal pulses is experimentally demonstrated using optical phase lock loop based on a terahertz optical asymmetric demultiplexer (TOAD) with a local-reference-oscillator-free electronic feedback circuit. The clock pulse that was used as the control pulse had energy of 800 fJ and the SNR of the time-extracted 10 GHz RF signal to the side components was larger than 40 dB. |
| Keywords: | Clock recovery Phase-locked loop 40 Gbps Terahertz optical asymmetric demultiplexer |
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