Acronym	Concept
ALMA	Atacama Large Millimetre Array
AoA	Angle-of-arrival
AWG	Arrayed-waveguide grating
AWG	Arbitrary waveform generator
BBU	Base band unit
BER	Bit error rate
BERT	Bit error rate tester
BPF	Band pass filter
BPSK	Binary Phase-Shift Keying
bps	Bit per second
BW	Bandwidth
CNC 	Computer Numerical Control
CPRI	Common public radio interface
CPW	Coplanar Waveguide
CW	Continuous-wave
DBR	Distributed Bragg Reflector
DFB	Distributed Feedback 
DFL	Dual-Frequency Laser
DRW	Dielectric rod wavegudie
DSB	Double Sideband Mixer
DSO	Digital sampling oscilloscope
DSP	Digital signal processing
DUT	Device under test
ECL	External Cavity Lasers
EDFA	Erbium-doped fiber amplifier
EDM	Electro-discharge Machining
EO	Electro-Optic
EOPM	Electro-Optic Phase Modulator
ESA	Electrical Spectrum Analyzer
FDS	Frequency-domain spectroscopy
FEC	Forward error correction
FMBD	Fermi-level Managed Barrier Diode
FPGA	Field programmable gate array
FSPL	Free-space path loss
FSR	Free-spectra range
FWA	Fixed wireless access 
FWHM	Full-Width Half-Maximum
GaAs	Gallium arsenide 
GC	Grating coupler
GSG	Ground-Signal-Ground
HEB	Hot electron bolometer
HPF	High pass filter
hv	photon energy
HR	High reflection
I/O	Input/Output
IF	Intermediate Frequency
IM	Intensity Modulation
IMPATT	Impact ionization avalanche transit-time diode
InP	Indium Phosphide
LD	Laser Diode
LIA	Lock-In Amplifier
LNA	Low noise amplifier
LO	Local Oscillator
LPF	Low pass filter
LT-GaAs	Low-temperature grown GaAs
LWA	Leaky-wave antenna
MBE	Molecular Beam Epitaxy
MLL	Mode-Locked Laser
MMI	Multimode Interference 
MMW 	Millimeter Wave
MRR	Micro Ring Resonators
MUTC-PD	Modified UTC-PD
MZM	Mach-Zehnder modulator
MPW	Multi-Project Wafer
NDC	Negative differential conductance
NEP	Noise equivalent power 
OC	Optical Circulator
OFCG	Optical Frequency Comb Generator
OFDM	Orthogonal frequency division multiplexing
OIL	Optical Injection Locking
OOK	On off keying
OPM	Optical Power Meter/Monitor
OSA	Optical Spectrum Analyzer
PAM	Pulse Amplitude Modulation
PC	Power Combining
PCA	Photoconductive Antenna
PDM	Polarization Division Multiplexing
PIC	Photonic Integrated Circuit
PIN-PD	 Pin-junction pinphotodiodes
PLO	Photonic Local Oscillator
POW	Passive Optical Waveguide
PS	Phase Shifter
PSK	Phase-shift keying
QAM	Quadrature Amplitude Modulation
QCL	Quantum Cascade Laser
QO-SBD	Quasi-optic detectors
QPSK	Quadrature phase shift keying
RF	Radio Freqeuncy
ROADM	Reconfigurable Optical Add-Drop Multiplexer
RoF	Radio-over-fibre
RRH	Remote radio head
RTD	Resonant tunnelling diode 
Rx	Receiver
SBD	Schottky Barrier Diode
SHM 	Sub-harmonic mixer
Si	Silicon
SiN	Silicon Nitride
SIS	Superconductor-insulator-superconductor
SMF	Single-Mode Fiber
SMSR	Side-Mode Suppression Ratio
SNR	Signal-to-Noise Ratio
SOA	Semiconductor Optical Amplifier
SSB	Single Sideband Mixer
TDS	Time-domain spectroscopy
TL	Tunable Laser
ToF	Time-of-flight
TRx	Transceiver
TUNNET	Tunnelling transit time
TWE	Traveling-Wave Electrode
Tx	Transmitter
UHD	Ultra-high definition
UTC-PD	Uni-Travelling Carrier Photodiode
VOA	Variable Optical Attenuator
WDM	Wavelength Division Multiplexing
WG	Waveguide
WG-SBD	Waveguide integrated detectors