AIMS To evaluate the clinical value of scanning laser polarimetry with the nerve fibre analyser type II in primary open angle glaucoma (POAG) and capsular glaucoma. METHODS Scanning laser polarimetry was performed on one eye of 30 patients suffering from POAG, 25 patients suffering from capsular glaucoma, and on 35 healthy control subjects. The retinal nerve fibre layer (RNFL) thickness value...

We present a comprehensive analysis of the technique of Longitudinal-Mode-Filling (LMF) to reduce Stimulated Brillouin Scattering (SBS) limitations in Ytterbium Doped Fibre Amplifiers (YDFA), for the generation of nanosecond, temporally shaped pulses. A basic Master-Oscillator-Power-Amplifier (MOPA) system, comprising an output YDFA with 10 µm-core active fibre, is experienced for benchmarking ...

We will give an overview of our recent work on fibre-optic hvo-photon fluorescence endoscopy devices. The main component of these devices is a singlefibre coupler which acts as a low passfilter. The first device involves a lem-basedprobe head and the second includes a prism-basedprobe head. It has been well-known that two-photon fluorescence imaging systems offer distinct advantages over conven...

We review our recent progress on the realisation of pulse shaping in passively-mode-locked fibre lasers by inclusion of an amplitude and/or phase spectral filter into the laser cavity. We numerically show that depending on the amplitude transfer function of the in-cavity filter, various regimes of advanced waveform generation can be achieved, including ones featuring parabolic-, flat-topand tri...

We present a flexible and rapid method for the production of Bragg gratings in a range of optical waveguides such as optical fibres and direct laser-written waveguides in bulk media. Using a low repetition rate (1 kHz) femtosecond laser, Bragg grating structures can be written in a point-by-point fashion (where each laser pulse inscribes one period of the Bragg structure) in both passive and ac...

The advantageous employment of multimode fibres for beam delivery in laser Doppler anemometers (LDA) is presented. Multimode fibres allow the transfer of significantly higher power into the LDA measurement volume and need lower alignment effort compared to the usually employed singlemode fibres. Powerful laser diodes can now be applied for LDA set-ups, enabling sensitive velocity measurements o...

We report what we believe to be the first results on short pulse generation in Yb3’:silica fibre. By applying the stretched pulse technique in a unidirectional, polarisation-switch Yb> fibre laser incorporating a prism-based dispersive delay line, we obtain self-start mode-locking and 100 pJ pulses which can be compressed to give clean chirp-free 400 fs pulses. We believe such sources to have g...

Introduction: Radio-over-fibre (RoF) techniques are attracting much attention from manufacturers and radio network operators for the deployment of flexible and cost-effective radio access systems. For the emerging broadband wireless standards, operating at carrier frequencies beyond 5 GHz, one of the main challenges of RoF techniques is the generation and remote delivery of microwave signals to...

Fibre Bragg grating (FBG) sensors have been fabricated in polymer photonic crystal fibre (PCF). Results are presented using two different types of polymer optical fibre (POF); first multimode PCF with a core diameter of 50μm based on poly(methyl methacrylate) (PMMA) and second, endlessly single mode PCF with a core diameter of 6μm based on TOPAS cyclic olefin copolymer. Bragg grating inscriptio...