We present THz time-domain spectroscopy measurements on glass-fibre reinforced polymers. The experimental set-up consists of a standard free-space THz spectrometer with photoconductive emitter and detector antennas driven by a femtosecond laser source. Single-point measurements to precisely obtain the THz properties of the sample are performed as well as two-dimensional images by scanning the s...

In the present work, gain of EDFA (Erbium Doped Fibre Amplifier) and YDFA (Ytterbium Doped Fibre Amplifier) are analyzed based on their performance parameters. The effects of pump laser power, length of doped fibre that used for amplification and the wavelength of the input signal on the gains of the optical amplifiers is examined. EDFA exhibits maximum gain of 48db around 1550nm regions with p...

The application of a recently demonstrated mode-locked ultralong pulsed fibre ring laser architecture (Gallazzi et al., 2021) to the inexpensive and efficient generation supercontinuum from output at 1.56 μm in standard single-mode telecommunication is experimentally demonstrated. impact broadening fibre, dynamic switching between different harmonic modes influence polarization on properties ge...

The ranging algorithm allows active stations to measure their distances to the headend for synchronization purpose in Hybrid Fiber Coax (HFC) networks. A practicable mechanism to resolve contention among numerous stations is to randomly delay the transmission of their control messages. Since shorter contention cycle time increases slot throughput, this study develops three mechanisms, fixed ran...

A short section of photonic crystal fibre has been used for ultra-short pulse compression. The unique optical properties of this novel medium in terms of high nonlinearity and relatively small group velocity dispersion are shown to provide an ideal platform for the standard fibre pulse compression technique used directly on the nanoJoule output pulses from a commercial laser system. We report a...

Stimulated Brillouin scattering (SBS) is a recent technique developed to generate slow light in optical fibres. It is the simplest and most applicable method of slow light production. In this paper a high power laser pump was used to provide the Brillouin gain of a low power signal of -10 dBm. Three single mode fibres namely, standard fibre (STD), large area fibre (LA) and reduced slope fibre (...