FAQ Photonics

What makes glass the ideal substrate for fiber-connectivity in integrated photonics?

Glass provides exceptional optical transparency and low propagation loss.Its thermal expansion coefficient is highly compatible with optical fibers, and its unique structure allows for high-precision 3D waveguide inscription, making it the superior choice for high-density interconnects.

Can waveguides be written directly into the glass volume?

Yes. Using Femtosecond Laser Direct Writing (FLDW), we can create complex 3D waveguides directly inside the glass. This allows for multi-layer optical routing and true 3D photonic integrated circuits (PICs) that are impossible with traditional 2D lithography.

Which wavelengths are supported by glass photonic devices?

Our glass-based photonics typically support a broad spectrum from UV to Near-IR. While our waveguides are frequently optimized for C-band and L-band (Near-IR) for telecommunications, we can also develop custom fabrication processes for Visible (VIS) light applications.

Are glass photonic devices thermally stable?

Extremely. Glass maintains a consistent refractive index and geometric stability even under high-temperature operations. This thermal robustness is critical for maintaining optical alignment in high-power laser systems and co-packaged optics.

How precise is the alignment in photonic glass chips?

We achieve micrometer-level positional accuracy. This high precision is fundamental to ensuring low insertion loss and optimized mode-field matching when coupling light between fibers, waveguides, and active components.

Can electrical and optical functions coexist in a single glass chip?

Yes. Through our vertical integration, we combine 3D optical routing with precision metallization. This enables hybrid opto-electronic integration, allowing electrodes and sensors to operate alongside optical waveguides in a monolithic device.

What surface quality is required for low-loss photonics?

To minimize scattering and optical loss, we deliver surface roughness levels from 50nm down to < 10nm Ra. This ultra-smooth finish is essential for high-Q resonators and low-loss waveguides.

Is glass compatible with advanced fiber coupling solutions?

Absolutely. We fabricate high-precision glass ferrules, including V-grooves and complex 1D/2D hole arrays. These can be seamlessly combined with micro-optics and waveguides within the same substrate for automated, low-loss fiber alignment.

How scalable is the fabrication of glass photonic components?

Our technology is designed for the entire product lifecycle. Our wafer-level production allows customers to move seamlessly from rapid prototyping to mass manufacturing, ensuring consistent quality and cost-efficiency at scale.

What are the typical applications for photonics?

Our solutions power the most demanding sectors, including Data Centers (Data-/Tele-com), Co-Packaged Optics (CPO), Photonic Computing, Quantum Optics, and advanced sensing for Aerospace and Defense.

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