Our Vision

To transform the future of photonic integrated circuits by developing our Silicon Photonics 2.0 platform to provide silicon based lasers and amplifiers.

Our Technology

There is an urgent need for improved transceiver technologies both in the datacentre environment and for the fronthaul in 5G networks. In the datacentre the requirement for low cost, low power, small form factor and high performance photonics to serve ever increasing data needs has already necessitated the deployment of advanced Silicon Photonics technologies. This has enabled many of the optical components required in transceivers to be integrated into silicon.

Silicon Photonics 1.0

However, current silicon photonics is missing a key ingredient – light generation and amplification. Laser sources and optical amplifiers are fabricated in different compound semiconductor material systems and then co-packaged with the silicon photonics. Integrated silicon-based lasers and amplifiers are therefore a holy grail in the industry with the promise of lower fabrication costs combined with significant reduction in power requirement, increases in efficiency and the realisation of complex photonic systems on chip.

Silicon Photonics 2.0

Chromosol, a spinout from QMUL, has developed a technology based on a 2-component optical gain and sensitizer system which can be co-evaporated on top of a silicon based waveguide finally delivering on the promise of photonic integration – Silicon Photonics 2.0. The pre-print of the original Nature Materials describes this unique system can be downloaded here.

Our People

Paul May - Chairman

Paul May


Paul has worked at board level with start-ups in the photonics, semiconductor and display sectors for over 25 years, and has guided many of these from early stage to successful exits. He first started working on silicon photonics at IBM’s Yorktown Heights in the late 1980’s!

Prof William Gillin - Director and CTO

Prof William Gillin

Director and CTO

Prof Gillin is a Professor of Physics at Queen Mary University of London who works primarily on the optical properties of materials. He has worked extensively on both traditional semiconductors and more recently on organic semiconductors which are the technology behind OLED displays. He pioneered work on integrating infrared emitting lanthanide ions into organic devices and it was this research that led to the technology utilised by Chromosol.

Dr Huanqing Ye - Research Scientist

Dr Huanqing Ye

Senior Research Scientist

Dr Huanqing Ye did his PhD in Prof Gillin’s group on the optical properties of organic lanthanide materials. Following his PhD he worked as a post-doctoral researcher at NTU in Singapore before returning to London to work for Chromosol Ltd.

Lee Thornton - Director for New Business at IP Group

Lee Thornton

Director for New Business at IP Group

Lee works at the coal-face of technology commercialisation by sourcing and developing commercialisable intellectual property across the physical sciences from leading UK universities through the formation, financing and management of early stage spin-out companies.

Jim Shaikh

Jim Shaikh

Commercialisation Manager at QMUL

Jim has over 18 years’ experience in early stage venture development having established and exited three businesses.  His last business was a consumer products company in which he developed the core technology, raised investment and established a presence in 20 international markets supported by an international supply chain.  He has a background in engineering having worked for BMW/Rover and in Engineering Consultancy and is now a Senior Commercialisation Manager at Queen Mary Innovation Ltd.


Career Opportunities

No vacancies currently available.

Career Opportunities

No vacancies currently available.

We are currently looking for an experienced Photonics Engineer to work with Prof William Gillin the CTO of Chromosol Ltd and Dr Huanqing Ye, Senior Research Scientist at Chromosol Ltd. This role will be to develop and test a new class of photonic integrated circuits (PICs), primarily on a Silicon Nitride platform but moving on to a Silicon Photonics platform. The successful applicant will be responsible for the specification, simulation, design and testing of PICs to be manufactured by commercial suppliers. The work will be performed within the Organic Photonics Clean-Room in the School of Physics and Astronomy at QMUL. Further information on this role can be downloaded here. Interested candidates who meet the specification should apply with a CV and cover letter to

Contact Us

Email: | Chromosol Ltd, The Walbrook Building, 25 Walbrook, London, United Kingdom, EC4N 8A

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