F

Form birefringence is created as a result of an asymmetric core shape for the two axes. This core shape asymmetry creates both geometrical anisotrophy and asymmetrical stress across the core leading onto two different constants of propagation for the birefringent axes. Elliptical core fibers would be a typical example of shape/form birefringent fibers.

Related Terms: Beat Length, Birefringence, Birefringent Fiber, Core , Core Ellipticity, Extinction Ratio, H-Parameter, Highly Birefringent (HiBi), Polarization Dependent Loss (PDL), Polarization Extinction Ratio (PER), Polarization Maintaining (PM) Fiber, Polarization Mode, Polarization Mode Dispersion (PMD)