Richard Soref: The new frontiers of silicon photonics

Silicon photonics luminaries series

Interview 4: Professor Richard Soref

John Bowers acknowledges him with ‘kicking off’ silicon photonics some 30 years ago, while Andrew Rickman refers to him as the ‘founding father of silicon photonics’. An interview with Richard Soref. 

It was fibre-optic communications that started Professor Richard Soref on the path to silicon photonics.

“In 1985, the only photonic chip that could interface to fibre was the III-V semiconductor chip,” says Soref. He wondered if an elemental chip such as silicon could be used, and whether it might even do a better job. He had read in a textbook that silicon is relatively transparent at the 1.30-micron and 1.55-micron wavelengths used for telecom and it inspired him to look at silicon as a material for optical waveguides.

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US invests $610 million to spur integrated photonics

The US government has set up its latest manufacturing initiative, the sixth of nine, to address photonic integrated circuits (PICs). The $610 million venture is a combination of public and private funding: $110 million from the Department of Defense, $250 million from the state of New York and the rest private contributions.

Prof. Duncan Moore

Dubbed the American Institute for Manufacturing Integrated Photonics (AIM Photonics), the venture has attracted 124 partners includes 20 universities and over 50 companies.

The manufacturing innovation institute will be based in Rochester, New York, and will be led by the Research Foundation for the State University of New York. A key goal is that the manufacturing institute will continue after the initiative is completed in early 2021.

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Q&A with Richard Soref - Final Part

In the final part of the interview with Gazettabyte, Richard Soref talks about hybrid and monolithic integration, mid-infrared optics, how his photonics predictions made in a 2006 paper have fared, 2-micron-based optical communications, and his talk at OFC in March.

"In a rosy future, every smart phone, tablet, wrist watch, and hand-held device would contain one of these chemical-medical-physical sensors."

Richard Soref

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Q&A with photonics pioneer, Richard Soref - Part 1

Richard Soref has spent over 50 years researching photonics, contributing groundbreaking work in the areas of liquid crystals, silicon photonics and the broader topic of mid-infrared wavelengths and Group IV photonics. For 27 years he was employed at the Air Force Research Laboratory. He has also worked at the Sperry Research Center, the MIT Lincoln Laboratory, and is now a research professor at the University of Massachusetts in Boston.

In part 1 of a two-part interview with Gazettabyte, he details his research interests, explains what is meant by Group IV photonics, and discusses why photonics has not matched the semiconductor industry in terms of integration, and how that could change. 

Optics is a seemingly small subset of physics but really optics is a huge field with a deep, variegated nature waiting to be discovered

Richard Soref

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