Silica PCF

Silica glass has excellent transparency in the visible and near IR, as well as good drawing properties and excellent mechanical strength. As a result it is the material most commonly used to form PCF. We routinely fabricate a wide range of different PCF structures for use in many different projects throughout the Division. The technology permits a wide range of different structures to be realised, from periodic lattices of air channels to nanoweb structures and more complicated architectures. High quality hollow-core PCF is essential for the projects on gas-laser devices, optical sensors and particle guidance. Solid-core structures include dual-nanoweb fibre, twisted PCF and small-core PCFs for use in passive optoacoustic mode-locking of fibre lasers. Division members who require special PCFs for their experiments are encouraged to participate in their fabrication and design. The figure shows examples of structures made at MPL.

(a) Hollow-core photonic bandgap fiber; (b) endlessly single-mode PCF; (c) Kagome-lattice hollow-core fiber.