Scientific Results

Efficient coupling of a graded index glass guide to a polymer guide by means of a tapered transition

Year: 1995

Authors: Grando D., Palchetti L., Sottini S., Giorgetti E.

Autors Affiliation: Politecnico di Bari, Bari, Italy

Abstract: A new four layer tapered coupler (FLTC) has been studied and tested, able to transfer light efficiently from a monomode fiber to a polymer film guide by means of an auxiliary graded index glass waveguide. A simple theory has been developed to calculate the maximum efficiency of these structures. Experiments have been performed at ? =1.321 ┬Ám on several FLTC samples, containing K+ – Na+ ion-exchanged glass waveguides and spin coated poly-3BCMU films. Insertion losses in the range 3-6.5 dB have been measured, depending on the taper configuration. The agreement between theoretical and experimental data is good, provided that a suitable ripple of the taper profile is assumed.

Conference title:

KeyWords: Calculations; Gradient index optics; Light transmission; Optical design; Optical fiber coupling; Optical fibers; Optical films; Optical glass; Optical materials; Optical waveguides; Organic polymers; Refractive index, Four layer tapered coupler; Glass graded index waveguide; Nonlinear conjugated polymers; Polymer film, Waveguide couplers
DOI: 10000000000

This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more