Publications

We show that undoped coupled quantum well structures of GaAs and InGaAs have a magnetoresistance effect which leads to a wavelength shift of the optical spectrum.

Clear evidence for resonant tunneling of electrons in a p-i- n quantum well modulator is provided by picosecond pump-and- probe electroabsorption measurements.

Summary form only given. We present a new class of tunable optical devices based on the incorporation of scattering material into air-holes of an air-silica microstructured fiber.

We have investigated the decomposition of P(CH sub 3)sub 3 in 13 MHz, radio frequency discharges of He and H sub 2.

Optical diagnostic techniques have greatly expanded our understanding of low pressure discharges used in etching and deposition processes for microelectronics devices.

Optical differential phase-shift keying (ODPSK) has emerged as a promising modulation format for state-of-the-art optical transport networks owing to its capability to enable optical transmissions

A simple optical pipelined processor has been demonstrated using four arrays of S-SEEDs, the photonic equivalent of an R-S flip flop. We are currently using a 6 by 8 array of devices.

We demonstrate a compact and simple silica-waveguide 10-Gb/s tunable optical dispersion compensator (ODC) that works with uncontrolled wavelength transmitters by tracking the signal wavelength.

The distribution of high spectral purity reference signals over optical fibre in future telecommunication satellite payloads is presented.

We experimentally demonstrate the transformation of 42.7-Gb/s optical DPSK signals into high-quality duobinary signals by optical filtering in an athermal delay-interferometer filter.