Optical Fiber–Polymer Guide Coupling by a Tapered Graded Index Glass Guide

Anno: 1995

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

Affiliazione autori: Istituto di Ricerca sulle Onde Elettromagnetiche del CNR, Via Panciatichi 64, 50127 Firenze, Italy; Politecnico di Bari, Via Orabona 4, 70125 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 µm, 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. The application of the new coupler to future integrated waveguide systems, including passive glass components and polymer based all optical devices, is assessed. Copyright 1995 IEEE

Giornale/Rivista: IEEE JOURNAL OF QUANTUM ELECTRONICS

Volume: 31 (6)      Da Pagina: 1123  A: 1130

Maggiori informazioni: Manuscript received June 15, 1994; revised January 20, 1995. This work was supported by the European Project RACE 2012, the Italian Projects on Telecommunications, and MSTA. S. Sottini, L. Palchetti, and E. Giorgetti are with the Istituto di Ricerca sulle Onde Elettromagnetiche del CNR, Via Panciatichi 64, 501 27 Firenze, Italy. D. Grando is with the Politecnico di Bari, Via Orabona 4, 70125 Bari, Italy. IEEE Lop Number 9410763.
Parole chiavi: waveguides; fabrication
DOI: 10.1109/3.387051

Citazioni: 19
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