Acronym	Definition
AC	Alternating Current
BBO	Barium-Borate
CCMI	Core–Cladding–Mode Interferometer
CdTe	Electro-Optic Crystal
DBR	Distributed Bragg Reflector
DC	Direct Current
DGD	Differential Group Delay
EMF	Electromagnetic Field
FBG	Fiber Bragg Grating
FP	Fabry-Perot
GMM	Giant Magnetostrictive Material
HF	Hydrofluoric
HiBi PCF	Highly Birefringent Photonic Crystal Fiber
IMI	Intermodal Interferometer
LC	Liquid crystal
LFBG	Long-period Fiber Grating
MEMS	Micro Electro Mechanical Systems
MF	Magnetic Fluid
MFC	Microfiber Coupler
MMI	Microfiber Mode Interferometer
MOF	Microstructured Optical Fiber
MZI	Mach-Zehnder Interferometer
NATMF	Nonadiabatic Tapered Microfiber
NATOF	Nonadiabatic Tapered Optical Fiber
NCF	No-Core Fiber
NLC	Nematic Liquid Crystal
OFDR	Optical Frequency Domain Reflectometer
OTDR	Optical Time-Domain Reflectometry
PCF	Photonic Crystal Fiber
PDL	Polarization Dependent Loss
PLZT	Lead lanthanum zirconate titanate
PMF	Polarization Maintaining Fiber
PS-FBG	Phase-Shifted Fiber Bragg Grating
PVDF	Polyvinylidene Fluoride
PZF	Polarization Fiber
PZT	Piezoelectric ceramics
RBS	Rayleigh Backscattering Spectra
SMF	Single-Mode Fiber
SMS	Singlemode–Multimode–Singlemode
SNS	Singlemode-No-core-Singlemode
Tb	Terbium
TFBG	Tilted Fiber Bragg Grating
TMOF	Tapered Microstructured Optical Fiber
TTCF	Tapered thin-core fiber