MERL - Mitsubishi Electric Research Laboratories

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Electronic and Photonic Devices

Pursuing theoretical and experimental research for next generation devices.

We explore various device technologies, material science and device architectures to dramatically improve power and RF device performance to achieve higher efficiency, high linearity and much wider frequency band. We develop novel photonic integrated circuits to improve performance and reduce cost in optical communications applications.

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  • Researchers

  • Awards


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  • News & Events

    •  NEWS   MERL Scientists Presented 5 Papers Including 2 Invited Talks at Optical Fiber Communications Conference (OFC) 2020
      Date: March 8, 2020 - March 13, 2020
      MERL Contacts: Devesh Jha; Toshiaki Koike-Akino; Keisuke Kojima; David Millar; Kieran Parsons; Ye Wang
      Research Areas: Communications, Electronic and Photonic Devices, Machine Learning, Signal Processing
      Brief
      • Due to COVID-19, MERL Optical Team scientists remotely presented 5 papers including 2 invited talks at the Optical Fiber Communications Conference (OFC) 2020, that was held in San Diego from March 8-13, 2020. Topics presented include recent advances in quantum signal processing, channel coding design, nano-optic power splitter, and deep learning-based integrated photonics. In addition, Dr. Kojima gave an invited workshop talk on deep learning-based nano-photonic device optimization.

        OFC is the largest global conference and exhibition for optical communications and networking professionals. The program is comprehensive from research to marketplace, from components to systems and networks and from technical sessions to the exhibition. For over 40 years, OFC has drawn attendees from all corners of the globe to meet and greet, teach and learn, make connections and move the industry forward. The five-day technical conference features peer reviewed presentations and more than 180 invited speakers, the thought leaders in the industry presenting the highlights of emerging technologies. Additional technical programming throughout the week includes special symposia, special sessions, in-depth tutorials, workshops, panels and the thought-provoking rump session.
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    •  NEWS   MERL researcher Keisuke Kojima appointed as an Associate Editor of IEEE/OSA Journal of Lightwave Technology
      Date: January 1, 2020
      Where: IEEE/OSA Journal of Lightwave Technology
      MERL Contact: Keisuke Kojima
      Research Areas: Communications, Electronic and Photonic Devices
      Brief
      • Dr. Keisuke Kojima, Senior Principal Research Staff of MERL and Fellow of The Optical Society of America (OSA), has been appointed as Associate Editor of IEEE/OSA Journal of Lightwave Technology.

        IEEE/OSA Journal of Lightwave Technology is a semi-monthly hybrid open-access journal, co-sponsored by seven IEEE technical societies and OSA, has been publishing leading work in optical waveguide technologies and their applications, from integrated photonics to optical networks.
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  • Internships

    • MD1441: Advanced Phased Array Transceiver

      MERL is looking for a highly motivated, and qualified individual to join our internship program of advanced phased array research. The ideal candidate should be a senior Ph.D. student with rich experience in beam forming technologies. Knowledge of wireless communication, transceiver architecture, and digital signal processing, FPGA and/or Matlab programming skills are required. RF circuits knowledge will be a plus. Duration is 3-6 months with a flexible start date.

    • MD1370: Machine Learning based DPD for Power Amplifier

      MERL is looking for a talented intern to work on the next generation Digital-predistortion algorithms for power amplifier linearization such as 5G. The development of a DPD system involves aspects of signal processing and statistical algorithm design, RF components and instrumentation, digital hardware and software. It is therefore both a challenging and intellectually rewarding experience. This will involve MATLAB coding, interfacing to test equipment such as power sources, signal generators and analyzers and construction and calibration of RF component assemblies. The ideal candidate should have knowledge and experience in adaptive signal processing, machine learning, and radio communication. Good practical laboratory skills are needed. RF semiconductor devices and circuit knowledge is a plus. Duration is 3 to 6 months.


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  • Recent Publications

    •  Zhang, S., Zhang, S., Wang, B., Habetler, T., "Deep Learning Algorithms for Bearing Fault Diagnostics – A Comprehensive Review", IEEE Access, March 2020.
      BibTeX Download PDFAbout TR2020-034
      • @article{Zhang2020mar,
      • author = {Zhang, Shen and Zhang, Shibo and Wang, Bingnan and Habetler, Thomas},
      • title = {Deep Learning Algorithms for Bearing Fault Diagnostics – A Comprehensive Review},
      • journal = {IEEE Access},
      • year = 2020,
      • month = mar,
      • url = {https://www.merl.com/publications/TR2020-034}
      • }
    •  Tang, Y., Kojima, K., Koike-Akino, T., Wang, Y., Wu, P., TaherSima, M., Jha, D., Parsons, K., Qi, M., "Deep Neural Network Inverse Design of Integrated Nanophotonic Devices", arXiv, March 2020.
      BibTeX Download PDFAbout TR2020-026
      • @article{Tang2020mar2,
      • author = {Tang, Yingheng and Kojima, Keisuke and Koike-Akino, Toshiaki and Wang, Ye and Wu, Pengxiang and TaherSima, Mohammad and Jha, Devesh and Parsons, Kieran and Qi, Minghao},
      • title = {Deep Neural Network Inverse Design of Integrated Nanophotonic Devices},
      • journal = {arXiv},
      • year = 2020,
      • month = mar,
      • url = {https://www.merl.com/publications/TR2020-026}
      • }
    •  Tang, Y., Kojima, K., Koike-Akino, T., Wang, Y., Wu, P., TaherSima, M., Jha, D., Parsons, K., Qi, M., "Generative Deep Learning Model for a Multi-level NanoOptic Broadband Power Splitter", Optical Fiber Communication Conference and Exposition (OFC), DOI: 10.1364/OFC.2020.Th1A.1, ISBN: 978-1-943580-71-2, March 2020, pp. Th1A.1.
      BibTeX Download PDFAbout TR2020-025
      • @inproceedings{Tang2020mar,
      • author = {Tang, Yingheng and Kojima, Keisuke and Koike-Akino, Toshiaki and Wang, Ye and Wu, Pengxiang and TaherSima, Mohammad and Jha, Devesh and Parsons, Kieran and Qi, Minghao},
      • title = {Generative Deep Learning Model for a Multi-level NanoOptic Broadband Power Splitter},
      • booktitle = {Optical Fiber Communication Conference and Exposition (OFC)},
      • year = 2020,
      • pages = {Th1A.1},
      • month = mar,
      • publisher = {OSA},
      • doi = {10.1364/OFC.2020.Th1A.1},
      • isbn = {978-1-943580-71-2},
      • url = {https://www.merl.com/publications/TR2020-025}
      • }
    •  Tang, Y., Kojima, K., Gotoda, M., Nishikawa, S., Hayashi, S., Koike-Akino, T., Parsons, K., Meissner, T., Song, B., Sang, F., Yi, X., Klamkin, J., "Design and Optimization of Shallow-Angle Grating Coupler for Vertical Emission from Indium Phosphide Devices", SPIE Photonics West, DOI: 10.1117/12.2545082, February 2020.
      BibTeX Download PDFAbout TR2020-024
      • @inproceedings{Tang2020feb,
      • author = {Tang, Yingheng and Kojima, Keisuke and Gotoda, Mitsunobu and Nishikawa, Satoshi and Hayashi, Shusaku and Koike-Akino, Toshiaki and Parsons, Kieran and Meissner, Thomas and Song, Bowen and Sang, Fengqiao and Yi, Xiongsheng and Klamkin, Jonathan},
      • title = {Design and Optimization of Shallow-Angle Grating Coupler for Vertical Emission from Indium Phosphide Devices},
      • booktitle = {Published in SPIE Proceedings Vol. 11283: Integrated Optics: Devices, Materials, and Technologies XXIV},
      • year = 2020,
      • month = feb,
      • publisher = {SPIE},
      • doi = {10.1117/12.2545082},
      • url = {https://www.merl.com/publications/TR2020-024}
      • }
    •  Liu, F., Zhu, H., Li, C., Li, J., Wang, P., Orlik, P.V., "Angular-Domain Channel Estimation for One-Bit Massive MIMO Systems: Performance Bounds and Algorithms", IEEE Transactions on Vehicular Technology, DOI: 10.1109/TVT.2020.2966003, ISSN: 0018-9545, Vol. 69, No. 3, January 2020.
      BibTeX Download PDFAbout TR2020-009
      • @article{Liu2020jan,
      • author = {Liu, Fangqing and Zhu, Heng and Li, Changheng and Li, Jian and Wang, Pu and Orlik, Philip V.},
      • title = {Angular-Domain Channel Estimation for One-Bit Massive MIMO Systems: Performance Bounds and Algorithms},
      • journal = {IEEE Transactions on Vehicular Technology},
      • year = 2020,
      • volume = 69,
      • number = 3,
      • month = jan,
      • doi = {10.1109/TVT.2020.2966003},
      • issn = {0018-9545},
      • url = {https://www.merl.com/publications/TR2020-009}
      • }
    •  Teng, M., Safian, R., Alahmadi, Y., Zhuang, L., Kojima, K., "Miniaturized silicon photonics devices for integrated optical signal processors", JLT (Invited Review Paper), January 2020.
      BibTeX Download PDFAbout TR2020-010
    •  Li, K., Teo, K.H., "Gate Leakage Mechanisms and Modeling in GaN based High Electron Mobility Transistors – Literature Survey," Tech. Rep. TR2019-160, Mitsubishi Electric Research Laboratories, December 2019.
      BibTeX Download PDFAbout TR2019-160
      • @techreport{Li2019sep,
      • author = {Li, Kexin and Teo, Koon Hoo},
      • title = {Gate Leakage Mechanisms and Modeling in GaN based High Electron Mobility Transistors – Literature Survey},
      • institution = {Mitsubishi Electric Research Laboratories},
      • year = 2019,
      • month = dec,
      • url = {https://www.merl.com/publications/TR2019-160}
      • }
    •  Teo, K.H., "Report on ISPSD 2019," Tech. Rep. TR2019-161, Mitsubishi Electric Research Laboratories, December 2019.
      BibTeX Download PDFAbout TR2019-161
      • @techreport{Teo2019dec,
      • author = {Teo, Koo Hoo},
      • title = {Report on ISPSD 2019},
      • institution = {Mitsubishi Electric Research Laboratories},
      • year = 2019,
      • month = dec,
      • url = {https://www.merl.com/publications/TR2019-161}
      • }
    See All Publications for Electronic and Photonic Devices