Visible Phase Modulators
Covesion’s visible phase modulators deliver broadband, high-speed electro-optic performance, enabling operation at shorter wavelengths with increased optical power handling compared to conventional telecom devices. Available in fiber-coupled configurations, they offer low-loss, compact integration with optimized waveguide design, supporting reliable, application-specific performance across visible and near-infrared photonics systems.
Visible Amplitude Modulators
Covesion’s visible amplitude modulators provide high-speed, fiber-coupled amplitude modulation across visible and near-infrared wavelengths, enabling precise control of optical intensity. Designed for low Vπ, low insertion loss, and high extinction ratio, these compact, integration-ready devices extend modulation beyond telecom bands, supporting emerging applications in quantum technologies, sensing, and advanced photonics systems.
Telecom Modulators
Covesion’s telecom modulators deliver reliable, high-performance electro-optic modulation at telecom wavelengths, engineered for low insertion loss, low Vπ, and minimal residual amplitude modulation. Designed for operation at 100’s of MHz, they support demanding applications including fiber sensing and precision metrology, with fiber-coupled, integration-ready formats and customizable solutions tailored to specific wavelength and performance requirements.
Custom Modulator Solutions
Covesion’s custom modulator solutions are developed in collaboration with customers to meet specific wavelength, speed, and integration requirements. Combining in-house expertise in waveguide design, RF electrode engineering, and advanced packaging, these solutions support applications from research to OEM production, delivering tailored performance where standard devices are not suitable.
Engineering on your wavelength
390nm
6μm
Unsure of which solution is right for you? Our technical sales team will help you find the right solution for your application.
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Relevant resources
TECHNICAL GUIDE: Covesion Guide to PPLN: Introduction
TECHNICAL GUIDE: Covesion Guide to PPLN: Introduction
WHITE PAPER: Wavelength Engineering Using Non-Linear Optical...
In this white paper, Dr Stuart Coomber, Global Head of OEM Sales discusses wavelength engineering using non-linear optic...
WHITE PAPER: Wavelength Conversion in Harsh Environments
In this white paper, Dr Stuart Coomber, Global Head of OEM Sales, discusses wavelength conversion in harsh environments ...
WHITE PAPER: MgO:PPLN Applications
In this white paper, Dr RongRong Xu, Head of Scientific Sales, discusses the applications of MgO:PPLN.
CASE STUDY: The UK Quantum Technology Hub
The research at QuantIC is creating visible and infrared light using Covesion’s non-linear, PPLN crystals to provide a...
CASE STUDY: ID Quantique
ID Quantique (IDQ) are global leaders in Quantum-Safe Security and Quantum Sensing, harnessing light to develop and indu...
What our customers say about us
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Dr. Félix Bussières
ID Quantique, VP Research & Technology
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Dr Jefferson Florez Gutierrez
Imperial College London, Research Assistant
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Dr. Adetunmise Dada
University of Glasgow, Lecturer in Optics School of Physics and Astronomy
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Jeff Thompson
Princeton University, Associate Professor of Electrical and Computer Engineering
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As Covesion’s products are so well documented, we were able to easily select the waveguide we needed and discussions with Covesion’s team were helpful and clear. The product works well and is used regularly by the team here at IDQ.
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One of the main reasons we purchased PPLN products from Covesion is that they provided all the information we needed for understanding the crystal, and the sales team at Covesion made the purchase and the subsequent use of the product very simple. The company stands out because their poling technique is so good.
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The customer service from Covesion has always been excellent. We have a great rapport with Corin (ProfessorCorin Gawith, CTO, Covesion) and the team, and their knowledge is invaluable. I have had occasion to use Covesion crystals twice during my research at The University of Glasgow and the turnaround for the custom products was very quick, meaning the research could continue without delay.
Specifically with regards to our area of interest, the PPLN crystals are periodically poled, and the period of poling needs to be optimised to ensure the best performance of the source, enhancing the efficiency of the generation. Covesion gave us various options rather than just one specific period for the poling. For example, in one of the devices there were different groups of poling periods and that allowed us to optimise for best performance and find the configuration that worked the best.
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Compared to some other nonlinear mediums, Covesion’s PPLN product provides much higher nonlinear coefficient and good optical qualities that are suitable for high power laser applications.
Covesion has good reputation in the community, they provide good quality products as well as excellent technical support for the materials and technologies used in our laser system. They offer a range of standard in-stock products, together with providing bespoke products and customised services.
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