Novel 2N bit bipolar photonic digital-to-analog converter based on optical DQPSK modulation coupled with differential detection |
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| Authors: | Liao Jinxin Wen He Zheng Xiaoping Zhang Hanyi Guo Yili Zhou Bingkun |
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| Institution: | Tsinghua National Laboratory for Information Science and Technology, State Key Laboratory on Integrated Optoelectronics, Tsinghua University, Beijing, China. |
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| Abstract: | A novel 2N bit bipolar photonic digital-to-analog converter (PDAC) scenario based on the optical differential quadrature phase shift keying (ODQPSK) modulation coupled with differential detection is proposed. Compared with other proposed schemes, this bipolar PDAC has a greater dynamic range and a larger noise margin with good scalabilities both in speed and resolution. We demonstrate a 4 bit PDAC in a proof-of-principle experiment at a sampling rate of 2.5 GS/s. |
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