- Date: February 4, 2019
Where: Scientific Reports, open-access journal from Nature Research
MERL Contacts: Devesh K. Jha; Toshiaki Koike-Akino; Chungwei Lin; Kieran Parsons; Bingnan Wang
Research Areas: Artificial Intelligence, Electronic and Photonic Devices, Machine Learning
Brief - MERL researchers developed a novel design method enhanced by modern deep learning techniques for optimizing photonic integrated circuits (PIC). The developed technique employs residual deep neural networks (DNNs) to understand physics underlaying complicated lightwave propagations through nano-structured photonic devices. It was demonstrated that the trained DNN achieves excellent prediction to design power splitting nanostructures having various target power ratios. The work was published in Scientific Reports, which is an online open access journal from Nature Research, having high-impact articles in the research community.
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- Date: January 10, 2019
Where: Tokyo, Japan
MERL Contacts: Mouhacine Benosman; Philip V. Orlik; Koon Hoo Teo
Research Areas: Communications, Electronic and Photonic Devices, Machine Learning, Signal Processing
Brief - Mitsubishi Electric Corporation announced today its development of the world's first ultra-wideband digitally controlled gallium nitride (GaN) amplifier, which is compatible with a world-leading range of sub-6GHz bands focused on fifth-generation (5G) mobile communication systems. With a power efficiency rating of above 40%, the amplifier is expected to contribute to large-capacity communication and reduce the power consumption of mobile base stations.
MERL and Mitsubishi Electric researchers collaborated to develop digital control methods for amplifiers achieving high-efficiency of 40% and above, with 110% of the fractional bandwidth over frequency range 1.4-4.8 GHz. The digital control signals are designed using a learning-function based on Maisart®.
Please see the link below for the full Mitsubishi Electric press release text.
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- Date & Time: Thursday, November 29, 2018; 4-6pm
Location: 201 Broadway, 8th floor, Cambridge, MA
MERL Contacts: Elizabeth Phillips; Anthony Vetro
Research Areas: Applied Physics, Artificial Intelligence, Communications, Computational Sensing, Computer Vision, Control, Data Analytics, Dynamical Systems, Electric Systems, Electronic and Photonic Devices, Machine Learning, Multi-Physical Modeling, Optimization, Robotics, Signal Processing, Speech & Audio
Brief - Snacks, demos, science: On Thursday 11/29, Mitsubishi Electric Research Labs (MERL) will host an open house for graduate+ students interested in internships, post-docs, and research scientist positions. The event will be held from 4-6pm and will feature demos & short presentations in our main areas of research including artificial intelligence, robotics, computer vision, speech processing, optimization, machine learning, data analytics, signal processing, communications, sensing, control and dynamical systems, as well as multi-physyical modeling and electronic devices. MERL is a high impact publication-oriented research lab with very extensive internship and university collaboration programs. Most internships lead to publication; many of our interns and staff have gone on to notable careers at MERL and in academia. Come mix with our researchers, see our state of the art technologies, and learn about our research opportunities. Dress code: casual, with resumes.
Pre-registration for the event is strongly encouraged:
merlopenhouse.eventbrite.com
Current internship and employment openings:
www.merl.com/internship/openings
www.merl.com/employment/employment
Information about working at MERL:
www.merl.com/employment.
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- Date: June 13, 2018
Where: Philadelphia, PA
MERL Contact: Philip V. Orlik
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Invited by IEEE MTT-S (Microwave Theory and Techniques Society), Researcher Dr. Rui Ma attended and presented MERL's cutting edge technology demonstration on real-time of multi-band All-Digital Transmitter at 5G Interactive Theater, which was held during IMS2018 in Philadelphia, PA on June 13th 2018. All-digital transmitter (ADT) is envisioned as a key enabling technology for next generation software defined radio.
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- Date: March 11, 2018 - March 15, 2018
Where: Optical Fiber Communication Conference and Exhibition (OFC)
MERL Contacts: Toshiaki Koike-Akino; Kieran Parsons
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Six papers from the Optical Comms team will be presented at OFC2018 to be held in San Diego from 11-15 March 2018. The papers relate to high performance modulation formats, error correction coding and optimized pulse shape filtering for coherent optical links, and optical devices.
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- Date: January 31, 2018
Where: SPIE Photonics West
MERL Contact: Bingnan Wang
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - MERL presents two invited papers at SPIE Photonics West 2018, to be held in San Francisco from Jan 27 to February 1. MERL researchers Bingnan Wang and Keisuke Kojima will give an talk on "Metamaterial absorber for THz polarimetric sensing" and "System and device technologies for coherent optical communications", respectively.
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- Date: February 14, 2018
Where: Tokyo, Japan
MERL Contacts: Mouhacine Benosman; Philip V. Orlik; Koon Hoo Teo
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - MERL machine learning power amplifier and all-digital transmitter technologies that enable future intelligent wireless communications were reported at a recent press release event in Tokyo. Please see the link below for the full Mitsubishi Electric press release text.
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- Date: September 17, 2017 - September 21, 2017
Where: 2017 European Conference on Optical Communication (ECOC), Sweden
MERL Contacts: Toshiaki Koike-Akino; Kieran Parsons; Ye Wang
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Two papers from the Optical Communications team were presented at the 2017 European Conference on Optical Communication (ECOC) held in Gothenburg, Sweden in September 2017. The papers relate to enhanced error correction coding for coherent optical links and advanced precoding for optical data center networks. The invited paper studied irregular polar coding to reduce computational complexity, decoding latency, and bit error rate at the same time. In addition to two papers, the team member was invited to talk about constellation shaping as a workshop panelist.
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- Date: June 5, 2017
Where: Honolulu, HI
MERL Contacts: Philip V. Orlik; Koon Hoo Teo
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - MERL researcher Dr. Rui Ma, is organizing a Workshop in collaboration with Dr. SungWon Chung of the University of Southern California (USC) on advanced digital transmitters. This workshop overviews recent advances in digital-intensive wireless transmitter R&D for both base-stations and mobile devices. The focus will be on the digital signal processing techniques and related digital-intensive transmitter circuits and architectures for advanced modulation, linearization, spur cancellation, high efficiency encoding, and parallel processing. This workshop takes place on Monday, June 5th 2017 at International Microwave Week, in Honolulu, HI. In total, 8 technical presentations from world leading research groups will be given.
Dr. Ma will present a talk titled, "Advanced Power Encoding and Non-Contiguous Multi-Band Digital Transmitter Architectures".
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- Date: March 19, 2017 - March 23, 2017
Where: Optical Fiber Communication Conference and Exhibition (OFC)
MERL Contacts: Toshiaki Koike-Akino; Kieran Parsons
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Five papers from the Optical Comms team will be presented at OFC2017 to be held in Los Angeles from 19-23 March 2017. The papers relate to 1Tb/s optical transmission, high performance modulation formats and error correction coding for coherent optical links and precoding for plastic optical fiber links.
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- Date: January 12, 2017
Where: Tokyo, Japan
Research Areas: Communications, Electronic and Photonic Devices
Brief - Mitsubishi Electric Corporation and Mitsubishi Electric Research Laboratories (MERL) announced today the development of an ultra-wideband gallium nitride (GaN) Doherty power amplifier for next generation base stations that is compatible with a world-leading range (company estimate) of frequency bands above 3GHz to cover an operating bandwidth of 600MHz. The technology is expected to help reduce the size and energy consumption of next generation wireless base stations.
Please see the link below for the full Mitsubishi Electric press release text.
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- Date: October 11, 2016
Where: MIT Lincoln Laboratory
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Dr. Rui Ma was invited to give a talk on Modern Topics in Power Amplifier, which was IEEE Chapter course organized by IEEE Boston Section.
This five week lecture series intended to give a tutorial overview of the latest developments in power amplifier technology. It began with a review of RF power amplifier concepts then teaches the modern MMIC design flow process. Efficiency, and linearization techniques were discussed in the following weeks. The course was concluded with a hands on demonstration and exercise.
Dr. Ma was addressing the advancement of Digital Transmitter as a enabling technology for next generation wireless communications.
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- Date: September 19, 2016
Where: 2016 European Conference on Optical Communication, Dusseldorf Germany
MERL Contacts: Toshiaki Koike-Akino; Kieran Parsons
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Four papers from the Optical Comms team will be presented at ECOC2016 to be held in Dusseldorf, Germany from 19-21 September 2016. A fifth paper in collaboration with our colleagues in Japan will also be presented. ECOC is the largest conference on optical communication in Europe. The papers relate to high performance modulation formats, nonlinearity compensation and error correction coding for coherent optical links.
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- Date & Time: Wednesday, August 17, 2016; 1 PM
Speaker: Gilles Zerah, Centre Francais en Calcul Atomique et Moleculaire-Ile-de-France (CFCAM-IdF)
Research Areas: Applied Physics, Electronic and Photonic Devices
Abstract - The first part of the talk is a high-level review of modern technologies for atomic-level modelling of materials. The second part discusses band gap calculations and MERL results for semi-conductors.
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- Date: May 1, 2016
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - EC researcher Dr. Rui Ma is recently elected to serve on IEEE Microwave Theory and Techniques Society(MTT-S) Technical Committee (TC-20) on Wireless Communications.
The MTT-20 committee is responsible for all technical activities related to wireless communications for the Microwave Theory and Techniques Society. This includes, Internet of Things (IoTs), Next-Generation/5G communications, Machine-to-Machine Communications, Emergency Communications, Satellite Communications, Internet of Space, Space Communications and all aspects related to architecture and system level theoretical and practical issues.
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- Date: March 24, 2016
Awarded to: Toshiaki Koike-Akino, Keisuke Kojima, David S. Millar, Kieran Parsons, Tsuyoshi Yoshida, Takashi Sugihara
MERL Contacts: Toshiaki Koike-Akino; Kieran Parsons
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Five papers from the Optical Comms team were presented at the 2016 Optical Fiber Conference (OFC) held in Anaheim, USA in March 2016. The papers relate to enhanced modulation formats, constellation shaping, chromatic dispersion estimation, low complexity adaptive equalization and coding for coherent optical links. The top-scored paper studied optimal selection of coding and modulation sets to jointly maximize nonlinear tolerance and spectral efficiency.
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- Date: June 4, 2015
MERL Contact: Koon Hoo Teo
Research Areas: Applied Physics, Electronic and Photonic Devices
Brief - Li Zhu, Koon Hoo Teo and Qun Gao's paper, 'Dynamic On-resistance and Tunneling Based De-trapping in GaN HEMT,' was awarded the "Best Student Poster Award" at the IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC) 2015.
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- Date: June 1, 2015
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Rui Ma has been elected as Vice Chair of the IEEE Boston Section Microwave Theory and Techniques Society (MTT-S) Chapter.
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- Date: March 25, 2015
MERL Contacts: Kieran Parsons; Toshiaki Koike-Akino
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Six papers from the Optical Comms team will be presented at the 2015 Optical Fiber Conference (OFC) being held in LA, USA in March 2015. The papers relate to high-dimensional modulation, signal processing, coding for coherent optical links and semiconductor laser linewidth measurement.
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- Date: June 10, 2014
Where: European Conference on Optical Communication (ECOC)
MERL Contacts: Kieran Parsons; Toshiaki Koike-Akino
Research Areas: Communications, Electronic and Photonic Devices, Signal Processing
Brief - Four papers from the Optical Communications team have been accepted for publication and presentation at the European Conference on Optical Communication (ECOC) to be held in Cannes, France in September 2014. The papers relate to high-dimensional modulation, signal processing and coding for coherent optical links.
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- Date: June 2, 2013
Where: IEEE International Microwave Symposium (IMS)
Research Areas: Communications, Electronic and Photonic Devices
Brief - The paper "A 40-dBm High Voltage Broadband GaN Class-J Power Amplifier for PoE Micro-Basestations" by Ma, R., Goswami, S., Yamanaka, K., Komatsuzaki, Y. and Ohta, A. was presented at the IEEE International Microwave Symposium (IMS).
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- Date: May 26, 2013
Where: International Symposium on Power Semiconductor Devices and ICs (ISPSD)
MERL Contact: Koon Hoo Teo
Research Areas: Applied Physics, Electronic and Photonic Devices
Brief - The paper "Design of Enhancement Mode Single-gate and Double-gate Multi-channel GaN HEMT with Vertical Polarity Inversion Heterostructure" by Feng, P., Teo, K.H., Oishi, T., Yamanaka, K. and Ma, R. was presented at the International Symposium on Power Semiconductor Devices and ICs (ISPSD).
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- Date: March 17, 2013
Where: IEEE Applied Power Electronics Conference and Exposition (APEC)
MERL Contact: Koon Hoo Teo
Research Areas: Applied Physics, Electronic and Photonic Devices, Electric Systems
Brief - The paper "Generalized DC-link Voltage Balancing Control Method for Multilevel Inverters" by Deng, Y., Teo, K.H. and Harley, R.G. was presented at the IEEE Applied Power Electronics Conference and Exposition (APEC).
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- Date: March 1, 2013
Where: IEICE Technical Committee Conference (OCS/OFT/OPE)
MERL Contacts: Bingnan Wang; Toshiaki Koike-Akino; Kieran Parsons
Research Area: Electronic and Photonic Devices
Brief - The paper "An MMI-based Polarization Splitter using Patterned Metal and Angled Joint" by Kojima, K., Nishikawa, S., Yagyu, E., Yuan, W., Wang, B., Koike-Akino, T. and Parsons, K. was presented at the IEICE Technical Committee Conference (OCS/OFT/OPE).
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- Date: September 16, 2012
Where: European Conference on Optical Communication (ECOC)
MERL Contacts: Bingnan Wang; Toshiaki Koike-Akino; Kieran Parsons
Research Area: Electronic and Photonic Devices
Brief - The paper "An MMI-based Polarization Splitter Using Patterned Metal and Tilted Joint" by Yuan, W., Kojima, K., Wang, B., Koike-Akino, T., Parsons, K., Nishikawa, S. and Yagyu, E. was presented at the European Conference on Optical Communication (ECOC).
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