Intellex Acquires Expert by Big Village

We're thrilled to announce that Intellex has acquired Expert by Big Village, effective March 22, 2024. This strategic move enhances our capabilities and strengthens our commitment to delivering exceptional solutions to our customers.

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Expert Details

Semiconductor Distributed Feedback (DFB) Laser Technologies, especially Design

ID: 726284 California, USA

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He has expertise in design and modeling of semiconductor lasers, especially distributed feedback (DFB) lasers, with more than 20 years experience in industries. He made a number of product laser designs for optical transmitters in the real field. He developed theoretical models of semiconductor lasers, and implemented them to industries as laser design tools. He is one of the first who made the three dimensional analysis of multi-quantum-well DFB lasers.

He has expertise of photonic integration such as electro-absorption modulator integrated laser, DFB laser arrays, semiconductor optical amlifier integration, and multi-section tunable lasers. He is one of the demostraters of cascaded DFB lasers for tunable laser applications.

He provided the design and simulation of the active layers for 1.3 um, 1.49 um, and 1.55 um wavelength semiconductor distributed feedback (DFB) lasers. He gave a novel approach idea to improve the yield of single-mode operation, which was demonstrated experimentally. He also provided a theoretical DFB laser model and explained the physics.


Year Degree Subject Institution
Year: 1980 Degree: PhD Subject: Electronics Engineering Institution: Kyoto University, Japan
Year: 1973 Degree: MS Subject: Electronics Engineering Institution: Kyoto University, Japan
Year: 1970 Degree: BS Subject: Electrical Engineering Institution: Kyoto University, Japan

Work History

Years Employer Title Department
Years: 2007 to 2009 Employer: Applied Optoelectronics Inc. Title: Chief Scientist Department:
He was responsible for the design and development of new semiconductor laser products with modeling and simulation. He was also in charge of making a future technology direction.
Years Employer Title Department
Years: 1998 to 2002 Employer: Fujitsu Compound Semiconductor Inc. Title: Senior Director Department:
He was reponsible for all the lightwave R&D projects for 10 Gb/s and 40 Gb/s transmitter and receiver modules, as well as technical support for the customers.
Years Employer Title Department
Years: 1988 to 1998 Employer: Nortel Networks Title: Manager Department:
He was responsible for the design of semiconductor laser products (chip), as well as university collaboation projects (as representative).
Years Employer Title Department
Years: 1973 to 1985 Employer: Panasonic Title: Superviser Department:
He was responsible for the design and development of 12 GHz microwave solid-state oscillators for satelite TV broad casting systems. He was also in charge of coordinating the Japanese Government Project for optical measurement system.

International Experience

Years Country / Region Summary
Years: 1973 to 1985 Country / Region: Japan Summary: He joined Panasonic, and worked at its research laboratory on the SHF to UHF down converter for satelite TV broad casting systems. He developed novel microwave solid-state oscillators and new compact dielectric resonators, which were used in the first field applications in Japan.

Career Accomplishments

Associations / Societies
Fellow of IEEE Laser Electro Optics Society (LEOS)
Awards / Recognition
He is an IEEE Fellow for the contribution to the theory and commercialization of gain-coupled distributed feedback lasers.
Publications and Patents Summary
He is an author of two book chapters, and he has more than 170 publications, more than 10 US patents and more than 40 patents applied in Japan.

Additional Experience

Training / Seminars
He has produced several seminars on semiconductor distributed feedback lasers, and technical presentation materials (model, design, measurement methods in semiconducto laser areas).
Vendor Selection
Strong connections to Japanese optoelectronics industries, such as Mitsubishi, Sumitomo, NEC, Hitachi, Furukawa etc.
Marketing Experience
Optoelectronics component for optical fiber communications. Optical communication systems (access to long-haul).
Other Relevant Experience
Laser performance simulation by MatLab and Fortran programming.
Translation between English and Japanese (language).
Patent writing and application.

Language Skills

Language Proficiency
Japanese Japanese is his native language. English is his second-language. Since 1985, he has been in North America, and working using English.

Fields of Expertise

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