@phdthesis{discovery18757,
            note = {Authorisation for digitisation not received},
           title = {Indium phosphide based asymmetric Fabry-Perot modulator/detector photonic antennas for bidirectional wireless transmission},
           month = {July},
          school = {UCL (University College London)},
            year = {2009},
        abstract = {Distribution of IEEE 802.11a Wireless Local Area Networks (WLAN) using wireless
over fibre (WOF) technology have been achieved by employing novel InP based Asymmetric
Fabry-Perot Modulator/detectors (AFPM) with quaternary material system InGaAs/AlInGaAs
Multiple Quantum Wells (MQW). The Quantum-Confined Stark Effect (QCSE) electroabsorption
AFPM operates simultaneously as an optical intensity modulator on the uplink and as
a conventional photodetector on the downlink. In this work, the design and fabrication of the new
InGaAs/AlInGaAs MQW AFPM device is developed and discussed.
The electrical and optoelectronic characterisation of the AFPM shows an improved modulation
slope -dR/dV of over 40 \%/V, where dR is the differential optical reflectance and dV is the
differential terminal voltage, compared to the previously reported 6-10 \%/V achieved with an
InGaAsP/InGaAsP MQW AFPM. The modulation bandwidth exceeds 18 GHz, hence verifying
the feasibility of the AFPM for integration with an Electromagnetic Band Gap (EBG) antenna to
perform data transmission in real environments.
The design and integration processes of the EBG photonic antenna are described. In
addition, the first bi-directional link and IEEE802.11a WLAN data transmission experiments
using EBG photonic antenna and 2 x 2 photonic array antennas with integrated
InGaAs/AlInGaAs MQW AFPMs are reported and compared with uncooled directly modulated
lasers. Half-duplex IEEE 802.11a connection was successfully established between a laptop
computer and the photonic antenna, which in turn was connected via an optical fiber to a wireless
access point. A maximum data throughput of 7 Mbps was achieved at 8 m separation between
the laptop and the photonic antenna.},
             url = {https://discovery.ucl.ac.uk/id/eprint/18757/},
          author = {Chuang, C. H.}
}