A simple mechanical setup was used to polish a standard single mode optical fiber in order to make it asymmetric. The polished fiber was tapered down maintaining the D-shape transversal profile. Its broken symmetry along with the extended evanescent field, due to the dimensions of the microfiber, implies a potentially high birefringent waveguide as well as a high-sensitivity external refractive index device. An experimental maximum sensitivity of S ≈ (3.0±0.2)×104nm/RIU was achieved, other experimental and numerical results supporting our initial assumptions are also presented.
No takes yet. Share an insight, caveat, or question.
Beltrán-Mejía et al. (2013) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: