Diseño, desarrollo y caracterización de un modulador de amplitud integrado en LiNbO3

PRESTI, D.; GUAREPI, V.; FASCISZEWSKI, A.; TORCHIA, G.A.

2016 IEEE Biennial Congress of Argentina, ARGENCON 2016

Institute of Electrical and Electronics Engineers Inc.

Año: 2016 vol. 1 p. 1 - 6

In this paper we present a full study to design and develop an optical modulator based in a Mach Zehnder (MZ) interferometer integrated in X cut Lithium Niobate (LNB) wafers. The optical circuits were fabricated by means of femtosecond laser writing on LNB samples under planar configuration. The optical circuit was designed by considering the bend radio and the length for the final device in order to minimize the losses and reduce the Vπ value. For these considerations, computational simulations were performed by using the RSOFT? commercial software. The electro-optics modulation was reached by adding metal electrodes on the surface on the sample. This experimental procedure was by carried out by means of lithography and sputtering techniques. The MZ modulators were coupled to fiber optics at the input and output by performing an original integration procedure which used photo-cured adhesive and homemade fiber hold system. Finally, the electro-optics modulator prototype was assembled in a metal box with single mode fiber connectors type FC-APC at the input/output and also this device includes four pin to voltage connection. The developed prototype supports single mode propagation at communications wavelengths (1.55 μm) and after an operational test a Vπ value close to 45 V was measured.