PCF	Photonic crystal fiber
SC-PCF	Solid core photonic crystal fiber
HC-PCF	Hollow core photonic crystal fiber
NA	Numerical Aperture
TIR	Total internal reflection
SMF	Single-mode fiber
MMF	Multi-mode fiber
MOF	Microstructure optical fiber
FBG	Fiber brag grating
FP Cavity	Fabry–Pérot cavity
LPG	Long period grating
LMA	Large mode area
MZI	Mach–Zehnder interferometer
SPR	Surface plasmon resonance
LC	Liquid crystal
PBG	Photonic band gap fiber
DC-PCF	Dual core photonic crystal fiber
D-PCF	D shaped photonic crystal fiber
LC-PCF	Liquid crystal photonic crystal fiber