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Flexible high-order QAM transmitters for elastic optical networks

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Abstract

In order to adapt to the dynamics in the future optical networks, we propose and experimentally demonstrate two flexible high-order quadrature amplitude modulation (QAM) transmitter schemes: (a) a flexible transmitter using a tandem in-phase/quadrature modulators for generating 16QAM, 32QAM, 64QAM signals; and (b) a scheme based on monolithically integrated quad-Mach–Zehnder in-phase/quadrature with binary driving electronics for synthesizing minimum phase-shift keying (MSK), quadrature phase-shift-keying (QPSK), 8-ary phase-shift keying (8PSK), and 16QAM. These schemes provide different approaches to configure a flexible high-order QAM transmitter, either using cascaded off-the-shelf modulators or via highly integrated monolithic modulator. These flexible and reconfigurable transmitter schemes exhibit different characteristics in terms of system performance, which provides the network operators different flexible transmitter solutions suitable for different application scenarios in elastic optical networks.

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Acknowledgments

The work was supported in part by Grant-in-Aid for Young Scientist (A) (25709031) from the Ministry of Education, Culture, Sports, Science, and Technology, Japan.

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Authors and Affiliations

  1. Institute of Innovative Science of Technology, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japan

    Guo-Wei Lu

  2. National Institute of Information and Communications Technology (NICT), 4-2-1 Nukui-Kitamachi, Koganei, Tokyo, 184-8795, Japan

    Guo-Wei Lu, Takahide Sakamoto & Tetsuya Kawanishi

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  1. Guo-Wei Lu
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  2. Takahide Sakamoto
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  3. Tetsuya Kawanishi
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Correspondence to Guo-Wei Lu.

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Lu, GW., Sakamoto, T. & Kawanishi, T. Flexible high-order QAM transmitters for elastic optical networks. Photon Netw Commun 31, 345–352 (2016). https://doi.org/10.1007/s11107-015-0548-5

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  • DOI: https://doi.org/10.1007/s11107-015-0548-5

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