Robert George Peall

Broadband variable optical attenuator in silica waveguide technology

A broad-band variable optical attenuator, with 1 dB flatness over the 1530-1560 range and with variable attenuation up to 20 dB, is described. It is based on cascaded Mach-Zehnders and fabricated in silica waveguide technology.

6 × 700 Mbit/s Array Transmitter/Receiver Pair Realised In Opto-Hybrid Silicon Motherboard Technology

Fully operational opto-hybrid transmitter and receiver array modules containing driver ICs, passive components, v-groove mounted ribbon fibres, electrical interconnects and solder-bumped laser arrays integrated onto a silicon substrate are described. These operate at 700MBits/s per channel with 6 operational channels and are believed to be the most complete demonstration of opto-hybrid technology reported to date.