Recent advances in ultra-high-bandwidth coherent driver modulator

H. Wakita; Y. Ogiso; M. Nagatani; H. Yamazaki; M. Nakamura; T. Kobayashi; J. Ozaki; Y. Ueda; S. Kanazawa; T. Fujii; Y. Hashizume; H. Tanobe; N. Nunoya; M. Ida; Y. Miyamoto; M. Ishikawa

doi:10.1117/12.2511119

1 February 2019 Recent advances in ultra-high-bandwidth coherent driver modulator

H. Wakita, Y. Ogiso, M. Nagatani, H. Yamazaki, M. Nakamura, T. Kobayashi, J. Ozaki, Y. Ueda, S. Kanazawa, T. Fujii, Y. Hashizume, H. Tanobe, N. Nunoya, M. Ida, Y. Miyamoto, M. Ishikawa

Author Affiliations +

Proceedings Volume 10947, Next-Generation Optical Communication: Components, Sub-Systems, and Systems VIII; 109470L (2019) https://doi.org/10.1117/12.2511119
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

We report a coherent driver modulator sub-assembly for 100-Gbaud class transmitter. The sub-assembly employs a codesigned high-speed driver IC and optical modulator, where the designs for the characteristic impedance between the driver IC and IQ modulator and for the RF pads are optimized. The EO bandwidth is over 67 GHz. This response is sufficient for 100-Gbaud-class operation even if we consider RF losses caused by a package, PCB, and DAC. We also demonstrated QPSK and 16-QAM at the speed of 128 and 112 Gbaud, respectively.

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H. Wakita, Y. Ogiso, M. Nagatani, H. Yamazaki, M. Nakamura, T. Kobayashi, J. Ozaki, Y. Ueda, S. Kanazawa, T. Fujii, Y. Hashizume, H. Tanobe, N. Nunoya, M. Ida, Y. Miyamoto, and M. Ishikawa "Recent advances in ultra-high-bandwidth coherent driver modulator", Proc. SPIE 10947, Next-Generation Optical Communication: Components, Sub-Systems, and Systems VIII, 109470L (1 February 2019); https://doi.org/10.1117/12.2511119

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