We present an experimental study of waveguide tapers realized with segmented waveguides in LiNbO_3 substrates using the Soft Proton Exchange technique. Measurements show that the tapers introduced between the nonlinear part of the components, which requires strong mode confinement to increase the efficiency, and a standard optical fiber, which requires low mode confinement, reduce the coupling losses up to 0.7 dB, thus proving the practical interest of the approach. The use of such tapers in a real integrated optical circuit is also shown.
Insertion loss reduction of SPE:LiNb03 integrated circuits using segmented waveguide tapers / Davide Castaldini; Paolo Bassi; Guillaume Bertocchi; Sorin Tascu; Pierre Aschieri; Marc P. De Micheli; Sebastien Tanzilli; Pascal Baldi. - STAMPA. - (2007), pp. 283-285. (Intervento presentato al convegno 26èmes Journées Nationales de l'Optique Guidée, JNOG 2007. tenutosi a Grenoble, F nel July 3-5, 2007).
Insertion loss reduction of SPE:LiNb03 integrated circuits using segmented waveguide tapers
CASTALDINI, DAVIDE;BASSI, PAOLO;
2007
Abstract
We present an experimental study of waveguide tapers realized with segmented waveguides in LiNbO_3 substrates using the Soft Proton Exchange technique. Measurements show that the tapers introduced between the nonlinear part of the components, which requires strong mode confinement to increase the efficiency, and a standard optical fiber, which requires low mode confinement, reduce the coupling losses up to 0.7 dB, thus proving the practical interest of the approach. The use of such tapers in a real integrated optical circuit is also shown.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
